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Database: PDB
Entry: 4D1O
LinkDB: 4D1O
Original site: 4D1O 
HEADER    OXIDOREDUCTASE                          02-MAY-14   4D1O              
TITLE     STRUCTURE OF HUMAN ENDOTHELIAL NITRIC OXIDE SYNTHASE HEME DOMAIN WITH 
TITLE    2 L-ARG BOUND                                                          
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: NITRIC OXIDE SYNTHASE, ENDOTHELIAL;                        
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: RESIDUES 41-480;                                           
COMPND   5 SYNONYM: CONSTITUTIVE NOS, CNOS, EC-NOS, ENDOTHELIAL NOS, ENOS, NOS  
COMPND   6 TYPE III, NOSIII, CONSTITUTIVE NOS, NC-NOS, NOS TYPE I, NEURONAL NOS,
COMPND   7 N-NOS, NNOS, PEPTIDYL-CYSTEINE S-NITROSYLASE NOS1, BNOS, NEURONAL    
COMPND   8 NITRIC OXIDE SYNTHASE, NITRIC OXIDE SYNTHASE, BRAIN;                 
COMPND   9 EC: 1.14.13.39;                                                      
COMPND  10 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_VECTOR: PCWORI                                     
KEYWDS    OXIDOREDUCTASE, NITRIC OXIDE SYNTHASE                                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    H.LI,T.L.POULOS                                                       
REVDAT   3   20-DEC-23 4D1O    1       REMARK LINK                              
REVDAT   2   22-OCT-14 4D1O    1       JRNL                                     
REVDAT   1   15-OCT-14 4D1O    0                                                
JRNL        AUTH   H.LI,J.JAMAL,C.PLAZA,S.H.PINEDA,G.CHREIFI,Q.JING,            
JRNL        AUTH 2 M.A.CINELLI,R.B.SILVERMAN,T.L.POULOS                         
JRNL        TITL   STRUCTURES OF HUMAN CONSTITUTIVE NITRIC OXIDE SYNTHASES      
JRNL        REF    ACTA CRYSTALLOGR.,SECT.D      V.  70  2667 2014              
JRNL        REFN                   ISSN 0907-4449                               
JRNL        PMID   25286850                                                     
JRNL        DOI    10.1107/S1399004714017064                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.82 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PHENIX (PHENIX.REFINE: 1.8.2_1309)                   
REMARK   3   AUTHORS     : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN            
REMARK   3               : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE,           
REMARK   3               : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER,            
REMARK   3               : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY,              
REMARK   3               : REETAL PAI,RANDY READ,JANE RICHARDSON,               
REMARK   3               : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI,           
REMARK   3               : NICHOLAS SAUTER,JACOB SMITH,LAURENT                  
REMARK   3               : STORONI,TOM TERWILLIGER,PETER ZWART                  
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : ML                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.82                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 48.39                          
REMARK   3   MIN(FOBS/SIGMA_FOBS)              : 1.360                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 95245                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.157                           
REMARK   3   R VALUE            (WORKING SET) : 0.155                           
REMARK   3   FREE R VALUE                     : 0.192                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 4706                            
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (IN BINS).                           
REMARK   3   BIN  RESOLUTION RANGE  COMPL.    NWORK NFREE   RWORK  RFREE        
REMARK   3     1 48.4094 -  5.6478    1.00     3292   149  0.1831 0.1766        
REMARK   3     2  5.6478 -  4.4838    1.00     3103   168  0.1261 0.1350        
REMARK   3     3  4.4838 -  3.9173    1.00     3086   167  0.1199 0.1563        
REMARK   3     4  3.9173 -  3.5593    1.00     3080   150  0.1243 0.1854        
REMARK   3     5  3.5593 -  3.3042    1.00     3063   161  0.1451 0.1752        
REMARK   3     6  3.3042 -  3.1095    1.00     3037   162  0.1517 0.1858        
REMARK   3     7  3.1095 -  2.9538    1.00     3049   137  0.1546 0.1899        
REMARK   3     8  2.9538 -  2.8252    1.00     3029   161  0.1520 0.1942        
REMARK   3     9  2.8252 -  2.7165    1.00     3054   148  0.1540 0.2079        
REMARK   3    10  2.7165 -  2.6227    1.00     2991   186  0.1469 0.2028        
REMARK   3    11  2.6227 -  2.5407    1.00     3063   152  0.1465 0.1771        
REMARK   3    12  2.5407 -  2.4681    1.00     3018   143  0.1475 0.2073        
REMARK   3    13  2.4681 -  2.4031    1.00     3009   148  0.1548 0.2097        
REMARK   3    14  2.4031 -  2.3445    1.00     3036   152  0.1502 0.2246        
REMARK   3    15  2.3445 -  2.2912    1.00     2976   158  0.1529 0.1950        
REMARK   3    16  2.2912 -  2.2424    1.00     3025   155  0.1468 0.1960        
REMARK   3    17  2.2424 -  2.1976    1.00     3016   153  0.1519 0.2136        
REMARK   3    18  2.1976 -  2.1561    1.00     2976   156  0.1487 0.1865        
REMARK   3    19  2.1561 -  2.1176    1.00     3026   173  0.1685 0.2157        
REMARK   3    20  2.1176 -  2.0817    1.00     2972   154  0.1704 0.2062        
REMARK   3    21  2.0817 -  2.0481    1.00     3004   157  0.1737 0.2331        
REMARK   3    22  2.0481 -  2.0166    1.00     2974   168  0.1707 0.2095        
REMARK   3    23  2.0166 -  1.9870    1.00     3006   151  0.1798 0.2201        
REMARK   3    24  1.9870 -  1.9590    1.00     2985   154  0.1875 0.2401        
REMARK   3    25  1.9590 -  1.9325    0.99     2957   184  0.2009 0.2540        
REMARK   3    26  1.9325 -  1.9074    1.00     2977   167  0.2150 0.2915        
REMARK   3    27  1.9074 -  1.8836    0.99     2969   156  0.2343 0.2492        
REMARK   3    28  1.8836 -  1.8609    0.99     2953   169  0.2436 0.2747        
REMARK   3    29  1.8609 -  1.8392    1.00     2959   140  0.2728 0.3314        
REMARK   3    30  1.8392 -  1.8186    0.93     2854   127  0.3161 0.3740        
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED        : FLAT BULK SOLVENT MODEL                       
REMARK   3   SOLVENT RADIUS     : 1.11                                          
REMARK   3   SHRINKAGE RADIUS   : 0.90                                          
REMARK   3   K_SOL              : NULL                                          
REMARK   3   B_SOL              : NULL                                          
REMARK   3                                                                      
REMARK   3  ERROR ESTIMATES.                                                    
REMARK   3   COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED)     : 0.210            
REMARK   3   PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 18.620           
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  TWINNING INFORMATION.                                               
REMARK   3   FRACTION: NULL                                                     
REMARK   3   OPERATOR: NULL                                                     
REMARK   3                                                                      
REMARK   3  DEVIATIONS FROM IDEAL VALUES.                                       
REMARK   3                 RMSD          COUNT                                  
REMARK   3   BOND      :  0.007           6923                                  
REMARK   3   ANGLE     :  1.183           9512                                  
REMARK   3   CHIRALITY :  0.072            982                                  
REMARK   3   PLANARITY :  0.005           1219                                  
REMARK   3   DIHEDRAL  : 15.149           2527                                  
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 2                                          
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    SELECTION: (CHAIN A AND RESID 68:480)                             
REMARK   3    ORIGIN FOR THE GROUP (A):  17.2053 242.5309  32.0844              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.1394 T22:   0.1322                                     
REMARK   3      T33:   0.1226 T12:   0.0016                                     
REMARK   3      T13:   0.0034 T23:  -0.0104                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.0915 L22:   0.5595                                     
REMARK   3      L33:   0.6711 L12:   0.0311                                     
REMARK   3      L13:  -0.0538 L23:  -0.1205                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0290 S12:   0.0025 S13:   0.0574                       
REMARK   3      S21:   0.1421 S22:  -0.0118 S23:   0.0129                       
REMARK   3      S31:  -0.0718 S32:  -0.0354 S33:  -0.0033                       
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    SELECTION: (CHAIN B AND RESID 67:480)                             
REMARK   3    ORIGIN FOR THE GROUP (A):  30.2571 215.2089   9.8123              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0906 T22:   0.1164                                     
REMARK   3      T33:   0.1085 T12:  -0.0092                                     
REMARK   3      T13:   0.0087 T23:   0.0170                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.1463 L22:   0.8096                                     
REMARK   3      L33:   0.4047 L12:   0.1728                                     
REMARK   3      L13:  -0.1047 L23:  -0.1498                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0050 S12:  -0.0113 S13:   0.0029                       
REMARK   3      S21:  -0.0922 S22:  -0.0584 S23:  -0.0559                       
REMARK   3      S31:   0.0796 S32:   0.0058 S33:  -0.0708                       
REMARK   3                                                                      
REMARK   3  NCS DETAILS                                                         
REMARK   3   NUMBER OF NCS GROUPS : NULL                                        
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: RESIDUES 110-118 IN CHAIN A AND 107-118   
REMARK   3  IN CHAIN B ARE DISORDERED                                           
REMARK   4                                                                      
REMARK   4 4D1O COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 02-MAY-14.                  
REMARK 100 THE DEPOSITION ID IS D_1290060519.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-FEB-14                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ALS                                
REMARK 200  BEAMLINE                       : 8.2.1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.000                              
REMARK 200  MONOCHROMATOR                  : GRAPHITE                           
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315R                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 95342                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.820                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.8                               
REMARK 200  DATA REDUNDANCY                : 4.900                              
REMARK 200  R MERGE                    (I) : 0.10000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 19.9000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.82                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.85                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 98.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.00                               
REMARK 200  R MERGE FOR SHELL          (I) : 1.00000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER                                                
REMARK 200 STARTING MODEL: PDB ENTRY 1NSE                                       
REMARK 200                                                                      
REMARK 200 REMARK: RPIM 0.594 CC ONE HALF 0.533                                 
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 54.30                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.69                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 10-12% PEG3350, 0.1M BIS TRIS, PH7.5,    
REMARK 280  0.3M MG ACETATE, 0.1M GDCL3, 5 MM TCEP                              
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000       31.19750            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       76.66100            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       55.04550            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       76.66100            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       31.19750            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       55.04550            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 12150 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 32400 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -138.2 KCAL/MOL                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     ALA A    41                                                      
REMARK 465     PRO A    42                                                      
REMARK 465     ALA A    43                                                      
REMARK 465     SER A    44                                                      
REMARK 465     LEU A    45                                                      
REMARK 465     LEU A    46                                                      
REMARK 465     PRO A    47                                                      
REMARK 465     PRO A    48                                                      
REMARK 465     ALA A    49                                                      
REMARK 465     PRO A    50                                                      
REMARK 465     GLU A    51                                                      
REMARK 465     HIS A    52                                                      
REMARK 465     SER A    53                                                      
REMARK 465     PRO A    54                                                      
REMARK 465     PRO A    55                                                      
REMARK 465     SER A    56                                                      
REMARK 465     SER A    57                                                      
REMARK 465     PRO A    58                                                      
REMARK 465     LEU A    59                                                      
REMARK 465     THR A    60                                                      
REMARK 465     GLN A    61                                                      
REMARK 465     PRO A    62                                                      
REMARK 465     PRO A    63                                                      
REMARK 465     GLU A    64                                                      
REMARK 465     GLY A    65                                                      
REMARK 465     PRO A    66                                                      
REMARK 465     LYS A    67                                                      
REMARK 465     ARG A   107                                                      
REMARK 465     LYS A   108                                                      
REMARK 465     LEU A   109                                                      
REMARK 465     GLN A   110                                                      
REMARK 465     GLY A   111                                                      
REMARK 465     ARG A   112                                                      
REMARK 465     PRO A   113                                                      
REMARK 465     SER A   114                                                      
REMARK 465     PRO A   115                                                      
REMARK 465     GLY A   116                                                      
REMARK 465     PRO A   117                                                      
REMARK 465     PRO A   118                                                      
REMARK 465     ALA B    41                                                      
REMARK 465     PRO B    42                                                      
REMARK 465     ALA B    43                                                      
REMARK 465     SER B    44                                                      
REMARK 465     LEU B    45                                                      
REMARK 465     LEU B    46                                                      
REMARK 465     PRO B    47                                                      
REMARK 465     PRO B    48                                                      
REMARK 465     ALA B    49                                                      
REMARK 465     PRO B    50                                                      
REMARK 465     GLU B    51                                                      
REMARK 465     HIS B    52                                                      
REMARK 465     SER B    53                                                      
REMARK 465     PRO B    54                                                      
REMARK 465     PRO B    55                                                      
REMARK 465     SER B    56                                                      
REMARK 465     SER B    57                                                      
REMARK 465     PRO B    58                                                      
REMARK 465     LEU B    59                                                      
REMARK 465     THR B    60                                                      
REMARK 465     GLN B    61                                                      
REMARK 465     PRO B    62                                                      
REMARK 465     PRO B    63                                                      
REMARK 465     GLU B    64                                                      
REMARK 465     GLY B    65                                                      
REMARK 465     PRO B    66                                                      
REMARK 465     ARG B   107                                                      
REMARK 465     LYS B   108                                                      
REMARK 465     LEU B   109                                                      
REMARK 465     GLN B   110                                                      
REMARK 465     GLY B   111                                                      
REMARK 465     ARG B   112                                                      
REMARK 465     PRO B   113                                                      
REMARK 465     SER B   114                                                      
REMARK 465     PRO B   115                                                      
REMARK 465     GLY B   116                                                      
REMARK 465     PRO B   117                                                      
REMARK 465     PRO B   118                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O3   BTB A   870     O    HOH A  2297              2.16            
REMARK 500   O    HOH B  2023     O    HOH B  2024              2.17            
REMARK 500   C3   BTB A   870     O    HOH A  2298              2.18            
REMARK 500   OD1  ASP A    91     O    HOH A  2024              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    GLN A  89      -80.98    -62.96                                   
REMARK 500    ASN A 283       29.04   -147.66                                   
REMARK 500    ALA A 351       70.44   -155.33                                   
REMARK 500    ARG A 372     -135.53   -118.35                                   
REMARK 500    CYS A 441      118.02   -164.46                                   
REMARK 500    PRO A 479        0.57    -69.03                                   
REMARK 500    ASN B 283       26.13   -141.29                                   
REMARK 500    ALA B 351       66.57   -158.39                                   
REMARK 500    ARG B 372     -131.97   -117.57                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH B2387        DISTANCE =  6.06 ANGSTROMS                       
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              ZN A 900  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A  94   SG                                                     
REMARK 620 2 CYS A  99   SG  107.1                                              
REMARK 620 3 CYS B  94   SG  121.6 106.4                                        
REMARK 620 4 CYS B  99   SG  105.4 105.3 110.0                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             HEM A 500  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A 184   SG                                                     
REMARK 620 2 HEM A 500   NA   98.9                                              
REMARK 620 3 HEM A 500   NB   99.7  85.7                                        
REMARK 620 4 HEM A 500   NC  100.5 160.5  89.3                                  
REMARK 620 5 HEM A 500   ND  101.3  92.0 158.9  86.0                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              GD A1482  GD                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 BTB A 870   O6                                                     
REMARK 620 2 BTB A 870   O8   65.4                                              
REMARK 620 3 BTB A 870   O3  135.9 103.9                                        
REMARK 620 4 BTB A 870   N    59.5  52.7  79.7                                  
REMARK 620 5 BTB A 870   O1   67.6 114.7  81.2  65.2                            
REMARK 620 6 HOH A2298   O   119.1  54.2  60.4  77.0 130.2                      
REMARK 620 7 HOH A2372   O   125.1 168.4  72.0 134.7  75.8 115.7                
REMARK 620 8 HOH A2373   O    65.8 126.4 126.6 115.0  63.5 166.1  61.7          
REMARK 620 9 HOH A2374   O    78.7  68.7 140.0 117.2 138.4  87.0 107.1  81.2    
REMARK 620 N                    1     2     3     4     5     6     7     8     
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             HEM B 500  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B 184   SG                                                     
REMARK 620 2 HEM B 500   NA  100.2                                              
REMARK 620 3 HEM B 500   NB  100.4  87.0                                        
REMARK 620 4 HEM B 500   NC   99.3 160.4  87.8                                  
REMARK 620 5 HEM B 500   ND  100.1  88.8 159.5  89.6                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              GD B1482  GD                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 THR B 319   O                                                      
REMARK 620 2 GLU B 321   OE1  67.2                                              
REMARK 620 3 BTB B 870   O8  143.3 133.2                                        
REMARK 620 4 BTB B 870   O6  136.7  69.8  69.9                                  
REMARK 620 5 BTB B 870   N   139.4 113.3  68.2  64.7                            
REMARK 620 6 BTB B 870   O1   78.8  71.9 132.4  92.6  64.4                      
REMARK 620 7 BTB B 870   O3   87.3 135.5  88.9 128.6  63.9  67.6                
REMARK 620 8 HOH B2284   O    71.9 126.0  72.1 134.7 120.7 131.7  73.4          
REMARK 620 9 HOH B2285   O    83.7  69.1  79.4  76.8 136.0 140.9 146.3  73.0    
REMARK 620 N                    1     2     3     4     5     6     7     8     
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 500                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ARG A 700                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 860                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTB A 870                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTB A 871                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 880                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL A 881                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 900                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC9                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE H4B A 1481                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 500                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ARG B 700                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT B 860                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTB B 870                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTB B 871                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GOL B 880                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE H4B B 1481                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GD A 1482                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC9                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GD B 1482                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 4D1N   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN NNOS HEME DOMAIN WITH L-ARG BOUND                 
REMARK 900 RELATED ID: 4D1P   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN ENDOTHELIAL NITRIC OXIDE SYNTHASE HEME DOMAIN IN  
REMARK 900 COMPLEX WITH 6-((((3S, 5R)-5-(((6- AMINO-4-METHYLPYRIDIN-2-YL)       
REMARK 900 METHOXY)METHYL)PYRROLIDIN-3 -YL)OXY) METHYL)-4-METHYLPYRIDIN-2-AMINE 
DBREF  4D1O A   41   480  UNP    P29474   NOS3_HUMAN      41    480             
DBREF  4D1O B   41   480  UNP    P29474   NOS3_HUMAN      41    480             
SEQRES   1 A  440  ALA PRO ALA SER LEU LEU PRO PRO ALA PRO GLU HIS SER          
SEQRES   2 A  440  PRO PRO SER SER PRO LEU THR GLN PRO PRO GLU GLY PRO          
SEQRES   3 A  440  LYS PHE PRO ARG VAL LYS ASN TRP GLU VAL GLY SER ILE          
SEQRES   4 A  440  THR TYR ASP THR LEU SER ALA GLN ALA GLN GLN ASP GLY          
SEQRES   5 A  440  PRO CYS THR PRO ARG ARG CYS LEU GLY SER LEU VAL PHE          
SEQRES   6 A  440  PRO ARG LYS LEU GLN GLY ARG PRO SER PRO GLY PRO PRO          
SEQRES   7 A  440  ALA PRO GLU GLN LEU LEU SER GLN ALA ARG ASP PHE ILE          
SEQRES   8 A  440  ASN GLN TYR TYR SER SER ILE LYS ARG SER GLY SER GLN          
SEQRES   9 A  440  ALA HIS GLU GLN ARG LEU GLN GLU VAL GLU ALA GLU VAL          
SEQRES  10 A  440  ALA ALA THR GLY THR TYR GLN LEU ARG GLU SER GLU LEU          
SEQRES  11 A  440  VAL PHE GLY ALA LYS GLN ALA TRP ARG ASN ALA PRO ARG          
SEQRES  12 A  440  CYS VAL GLY ARG ILE GLN TRP GLY LYS LEU GLN VAL PHE          
SEQRES  13 A  440  ASP ALA ARG ASP CYS ARG SER ALA GLN GLU MET PHE THR          
SEQRES  14 A  440  TYR ILE CYS ASN HIS ILE LYS TYR ALA THR ASN ARG GLY          
SEQRES  15 A  440  ASN LEU ARG SER ALA ILE THR VAL PHE PRO GLN ARG CYS          
SEQRES  16 A  440  PRO GLY ARG GLY ASP PHE ARG ILE TRP ASN SER GLN LEU          
SEQRES  17 A  440  VAL ARG TYR ALA GLY TYR ARG GLN GLN ASP GLY SER VAL          
SEQRES  18 A  440  ARG GLY ASP PRO ALA ASN VAL GLU ILE THR GLU LEU CYS          
SEQRES  19 A  440  ILE GLN HIS GLY TRP THR PRO GLY ASN GLY ARG PHE ASP          
SEQRES  20 A  440  VAL LEU PRO LEU LEU LEU GLN ALA PRO ASP GLU PRO PRO          
SEQRES  21 A  440  GLU LEU PHE LEU LEU PRO PRO GLU LEU VAL LEU GLU VAL          
SEQRES  22 A  440  PRO LEU GLU HIS PRO THR LEU GLU TRP PHE ALA ALA LEU          
SEQRES  23 A  440  GLY LEU ARG TRP TYR ALA LEU PRO ALA VAL SER ASN MET          
SEQRES  24 A  440  LEU LEU GLU ILE GLY GLY LEU GLU PHE PRO ALA ALA PRO          
SEQRES  25 A  440  PHE SER GLY TRP TYR MET SER THR GLU ILE GLY THR ARG          
SEQRES  26 A  440  ASN LEU CYS ASP PRO HIS ARG TYR ASN ILE LEU GLU ASP          
SEQRES  27 A  440  VAL ALA VAL CYS MET ASP LEU ASP THR ARG THR THR SER          
SEQRES  28 A  440  SER LEU TRP LYS ASP LYS ALA ALA VAL GLU ILE ASN VAL          
SEQRES  29 A  440  ALA VAL LEU HIS SER TYR GLN LEU ALA LYS VAL THR ILE          
SEQRES  30 A  440  VAL ASP HIS HIS ALA ALA THR ALA SER PHE MET LYS HIS          
SEQRES  31 A  440  LEU GLU ASN GLU GLN LYS ALA ARG GLY GLY CYS PRO ALA          
SEQRES  32 A  440  ASP TRP ALA TRP ILE VAL PRO PRO ILE SER GLY SER LEU          
SEQRES  33 A  440  THR PRO VAL PHE HIS GLN GLU MET VAL ASN TYR PHE LEU          
SEQRES  34 A  440  SER PRO ALA PHE ARG TYR GLN PRO ASP PRO TRP                  
SEQRES   1 B  440  ALA PRO ALA SER LEU LEU PRO PRO ALA PRO GLU HIS SER          
SEQRES   2 B  440  PRO PRO SER SER PRO LEU THR GLN PRO PRO GLU GLY PRO          
SEQRES   3 B  440  LYS PHE PRO ARG VAL LYS ASN TRP GLU VAL GLY SER ILE          
SEQRES   4 B  440  THR TYR ASP THR LEU SER ALA GLN ALA GLN GLN ASP GLY          
SEQRES   5 B  440  PRO CYS THR PRO ARG ARG CYS LEU GLY SER LEU VAL PHE          
SEQRES   6 B  440  PRO ARG LYS LEU GLN GLY ARG PRO SER PRO GLY PRO PRO          
SEQRES   7 B  440  ALA PRO GLU GLN LEU LEU SER GLN ALA ARG ASP PHE ILE          
SEQRES   8 B  440  ASN GLN TYR TYR SER SER ILE LYS ARG SER GLY SER GLN          
SEQRES   9 B  440  ALA HIS GLU GLN ARG LEU GLN GLU VAL GLU ALA GLU VAL          
SEQRES  10 B  440  ALA ALA THR GLY THR TYR GLN LEU ARG GLU SER GLU LEU          
SEQRES  11 B  440  VAL PHE GLY ALA LYS GLN ALA TRP ARG ASN ALA PRO ARG          
SEQRES  12 B  440  CYS VAL GLY ARG ILE GLN TRP GLY LYS LEU GLN VAL PHE          
SEQRES  13 B  440  ASP ALA ARG ASP CYS ARG SER ALA GLN GLU MET PHE THR          
SEQRES  14 B  440  TYR ILE CYS ASN HIS ILE LYS TYR ALA THR ASN ARG GLY          
SEQRES  15 B  440  ASN LEU ARG SER ALA ILE THR VAL PHE PRO GLN ARG CYS          
SEQRES  16 B  440  PRO GLY ARG GLY ASP PHE ARG ILE TRP ASN SER GLN LEU          
SEQRES  17 B  440  VAL ARG TYR ALA GLY TYR ARG GLN GLN ASP GLY SER VAL          
SEQRES  18 B  440  ARG GLY ASP PRO ALA ASN VAL GLU ILE THR GLU LEU CYS          
SEQRES  19 B  440  ILE GLN HIS GLY TRP THR PRO GLY ASN GLY ARG PHE ASP          
SEQRES  20 B  440  VAL LEU PRO LEU LEU LEU GLN ALA PRO ASP GLU PRO PRO          
SEQRES  21 B  440  GLU LEU PHE LEU LEU PRO PRO GLU LEU VAL LEU GLU VAL          
SEQRES  22 B  440  PRO LEU GLU HIS PRO THR LEU GLU TRP PHE ALA ALA LEU          
SEQRES  23 B  440  GLY LEU ARG TRP TYR ALA LEU PRO ALA VAL SER ASN MET          
SEQRES  24 B  440  LEU LEU GLU ILE GLY GLY LEU GLU PHE PRO ALA ALA PRO          
SEQRES  25 B  440  PHE SER GLY TRP TYR MET SER THR GLU ILE GLY THR ARG          
SEQRES  26 B  440  ASN LEU CYS ASP PRO HIS ARG TYR ASN ILE LEU GLU ASP          
SEQRES  27 B  440  VAL ALA VAL CYS MET ASP LEU ASP THR ARG THR THR SER          
SEQRES  28 B  440  SER LEU TRP LYS ASP LYS ALA ALA VAL GLU ILE ASN VAL          
SEQRES  29 B  440  ALA VAL LEU HIS SER TYR GLN LEU ALA LYS VAL THR ILE          
SEQRES  30 B  440  VAL ASP HIS HIS ALA ALA THR ALA SER PHE MET LYS HIS          
SEQRES  31 B  440  LEU GLU ASN GLU GLN LYS ALA ARG GLY GLY CYS PRO ALA          
SEQRES  32 B  440  ASP TRP ALA TRP ILE VAL PRO PRO ILE SER GLY SER LEU          
SEQRES  33 B  440  THR PRO VAL PHE HIS GLN GLU MET VAL ASN TYR PHE LEU          
SEQRES  34 B  440  SER PRO ALA PHE ARG TYR GLN PRO ASP PRO TRP                  
HET    ARG  A 700      12                                                       
HET    HEM  A 500      43                                                       
HET    ACT  A 860       4                                                       
HET    BTB  A 870      14                                                       
HET    BTB  A 871      14                                                       
HET    GOL  A 880       6                                                       
HET    GOL  A 881       6                                                       
HET     ZN  A 900       1                                                       
HET    H4B  A1481      17                                                       
HET     GD  A1482       1                                                       
HET    ARG  B 700      12                                                       
HET    HEM  B 500      43                                                       
HET    ACT  B 860       4                                                       
HET    BTB  B 870      14                                                       
HET    BTB  B 871      14                                                       
HET    GOL  B 880       6                                                       
HET    H4B  B1481      17                                                       
HET     GD  B1482       1                                                       
HETNAM     ARG ARGININE                                                         
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM     ACT ACETATE ION                                                      
HETNAM     BTB 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-                 
HETNAM   2 BTB  PROPANE-1,3-DIOL                                                
HETNAM     GOL GLYCEROL                                                         
HETNAM      ZN ZINC ION                                                         
HETNAM     H4B 5,6,7,8-TETRAHYDROBIOPTERIN                                      
HETNAM      GD GADOLINIUM ATOM                                                  
HETSYN     HEM HEME                                                             
HETSYN     BTB BIS-TRIS BUFFER                                                  
HETSYN     GOL GLYCERIN; PROPANE-1,2,3-TRIOL                                    
FORMUL   3  ARG    2(C6 H15 N4 O2 1+)                                           
FORMUL   4  HEM    2(C34 H32 FE N4 O4)                                          
FORMUL   5  ACT    2(C2 H3 O2 1-)                                               
FORMUL   6  BTB    4(C8 H19 N O5)                                               
FORMUL   8  GOL    3(C3 H8 O3)                                                  
FORMUL  10   ZN    ZN 2+                                                        
FORMUL  11  H4B    2(C9 H15 N5 O3)                                              
FORMUL  12   GD    2(GD)                                                        
FORMUL  21  HOH   *766(H2 O)                                                    
HELIX    1   1 THR A   83  ALA A   88  5                                   6    
HELIX    2   2 ALA A  119  ILE A  138  1                                  20    
HELIX    3   3 SER A  143  GLY A  161  1                                  19    
HELIX    4   4 ARG A  166  ASN A  180  1                                  15    
HELIX    5   5 GLY A  186  TRP A  190  5                                   5    
HELIX    6   6 SER A  203  ASN A  220  1                                  18    
HELIX    7   7 ARG A  221  ASN A  223  5                                   3    
HELIX    8   8 ASN A  267  HIS A  277  1                                  11    
HELIX    9   9 PRO A  306  VAL A  310  5                                   5    
HELIX   10  10 TRP A  322  GLY A  327  5                                   6    
HELIX   11  11 SER A  359  THR A  364  1                                   6    
HELIX   12  12 THR A  364  ASP A  369  1                                   6    
HELIX   13  13 ILE A  375  MET A  383  1                                   9    
HELIX   14  14 THR A  389  SER A  392  5                                   4    
HELIX   15  15 LEU A  393  ALA A  413  1                                  21    
HELIX   16  16 ASP A  419  GLY A  439  1                                  21    
HELIX   17  17 ASP A  444  VAL A  449  1                                   6    
HELIX   18  18 SER A  453  THR A  457  5                                   5    
HELIX   19  19 THR A  457  HIS A  461  5                                   5    
HELIX   20  20 THR B   83  ALA B   88  5                                   6    
HELIX   21  21 ALA B  119  ILE B  138  1                                  20    
HELIX   22  22 SER B  143  GLY B  161  1                                  19    
HELIX   23  23 ARG B  166  ASN B  180  1                                  15    
HELIX   24  24 GLY B  186  TRP B  190  5                                   5    
HELIX   25  25 SER B  203  ASN B  220  1                                  18    
HELIX   26  26 ARG B  221  ASN B  223  5                                   3    
HELIX   27  27 ASN B  267  HIS B  277  1                                  11    
HELIX   28  28 PRO B  306  VAL B  310  5                                   5    
HELIX   29  29 LEU B  320  GLY B  327  5                                   8    
HELIX   30  30 SER B  359  THR B  364  1                                   6    
HELIX   31  31 THR B  364  ASP B  369  1                                   6    
HELIX   32  32 ILE B  375  MET B  383  1                                   9    
HELIX   33  33 THR B  389  SER B  392  5                                   4    
HELIX   34  34 LEU B  393  ALA B  413  1                                  21    
HELIX   35  35 ASP B  419  GLY B  439  1                                  21    
HELIX   36  36 ASP B  444  VAL B  449  1                                   6    
HELIX   37  37 SER B  453  THR B  457  5                                   5    
HELIX   38  38 THR B  457  HIS B  461  5                                   5    
SHEET    1  AA 2 ARG A  70  LYS A  72  0                                        
SHEET    2  AA 2 ILE A  79  TYR A  81 -1  O  THR A  80   N  VAL A  71           
SHEET    1  AB 4 GLN A 194  ASP A 197  0                                        
SHEET    2  AB 4 ALA A 227  VAL A 230  1  O  ILE A 228   N  PHE A 196           
SHEET    3  AB 4 PHE A 353  SER A 354 -1  O  SER A 354   N  ALA A 227           
SHEET    4  AB 4 ALA A 335  VAL A 336 -1  O  VAL A 336   N  PHE A 353           
SHEET    1  AC 3 ARG A 242  ILE A 243  0                                        
SHEET    2  AC 3 LEU A 291  GLN A 294 -1  O  GLN A 294   N  ARG A 242           
SHEET    3  AC 3 GLU A 301  PHE A 303 -1  O  GLU A 301   N  LEU A 293           
SHEET    1  AD 2 GLY A 253  ARG A 255  0                                        
SHEET    2  AD 2 VAL A 261  GLY A 263 -1  O  ARG A 262   N  TYR A 254           
SHEET    1  AE 2 GLU A 312  PRO A 314  0                                        
SHEET    2  AE 2 ARG A 329  TYR A 331 -1  O  TRP A 330   N  VAL A 313           
SHEET    1  AF 3 LEU A 346  PHE A 348  0                                        
SHEET    2  AF 3 LEU A 340  ILE A 343 -1  O  LEU A 341   N  PHE A 348           
SHEET    3  AF 3 ALA A 472  ARG A 474 -1  O  ALA A 472   N  GLU A 342           
SHEET    1  AG 2 TYR A 357  MET A 358  0                                        
SHEET    2  AG 2 ILE A 417  VAL A 418  1  N  VAL A 418   O  TYR A 357           
SHEET    1  BA 2 ARG B  70  LYS B  72  0                                        
SHEET    2  BA 2 ILE B  79  TYR B  81 -1  O  THR B  80   N  VAL B  71           
SHEET    1  BB 4 GLN B 194  ASP B 197  0                                        
SHEET    2  BB 4 ALA B 227  VAL B 230  1  O  ILE B 228   N  PHE B 196           
SHEET    3  BB 4 PHE B 353  SER B 354 -1  O  SER B 354   N  ALA B 227           
SHEET    4  BB 4 ALA B 335  VAL B 336 -1  O  VAL B 336   N  PHE B 353           
SHEET    1  BC 3 ARG B 242  ILE B 243  0                                        
SHEET    2  BC 3 LEU B 291  GLN B 294 -1  O  GLN B 294   N  ARG B 242           
SHEET    3  BC 3 GLU B 301  PHE B 303 -1  O  GLU B 301   N  LEU B 293           
SHEET    1  BD 2 GLY B 253  ARG B 255  0                                        
SHEET    2  BD 2 VAL B 261  GLY B 263 -1  O  ARG B 262   N  TYR B 254           
SHEET    1  BE 2 GLU B 312  PRO B 314  0                                        
SHEET    2  BE 2 ARG B 329  TYR B 331 -1  O  TRP B 330   N  VAL B 313           
SHEET    1  BF 3 LEU B 346  PHE B 348  0                                        
SHEET    2  BF 3 LEU B 340  ILE B 343 -1  O  LEU B 341   N  PHE B 348           
SHEET    3  BF 3 ALA B 472  ARG B 474 -1  O  ALA B 472   N  GLU B 342           
SHEET    1  BG 2 TYR B 357  MET B 358  0                                        
SHEET    2  BG 2 ILE B 417  VAL B 418  1  N  VAL B 418   O  TYR B 357           
LINK         SG  CYS A  94                ZN    ZN A 900     1555   1555  2.39  
LINK         SG  CYS A  99                ZN    ZN A 900     1555   1555  2.34  
LINK         SG  CYS A 184                FE   HEM A 500     1555   1555  2.36  
LINK         O6  BTB A 870                GD    GD A1482     1555   1555  2.47  
LINK         O8  BTB A 870                GD    GD A1482     1555   1555  2.75  
LINK         O3  BTB A 870                GD    GD A1482     1555   1555  2.45  
LINK         N   BTB A 870                GD    GD A1482     1555   1555  2.86  
LINK         O1  BTB A 870                GD    GD A1482     1555   1555  2.26  
LINK        ZN    ZN A 900                 SG  CYS B  94     1555   1555  2.32  
LINK        ZN    ZN A 900                 SG  CYS B  99     1555   1555  2.31  
LINK        GD    GD A1482                 O   HOH A2298     1555   1555  2.14  
LINK        GD    GD A1482                 O   HOH A2372     1555   1555  2.76  
LINK        GD    GD A1482                 O   HOH A2373     1555   1555  2.53  
LINK        GD    GD A1482                 O   HOH A2374     1555   1555  2.52  
LINK        GD    GD A1482                 O   HOH A2379     1555   1555  2.88  
LINK         SG  CYS B 184                FE   HEM B 500     1555   1555  2.35  
LINK         O   THR B 319                GD    GD B1482     1555   1555  2.21  
LINK         OE1 GLU B 321                GD    GD B1482     1555   1555  2.47  
LINK         O8  BTB B 870                GD    GD B1482     1555   1555  2.29  
LINK         O6  BTB B 870                GD    GD B1482     1555   1555  2.35  
LINK         N   BTB B 870                GD    GD B1482     1555   1555  2.72  
LINK         O1  BTB B 870                GD    GD B1482     1555   1555  2.25  
LINK         O3  BTB B 870                GD    GD B1482     1555   1555  2.44  
LINK        GD    GD B1482                 O   HOH B2284     1555   1555  2.40  
LINK        GD    GD B1482                 O   HOH B2285     1555   1555  2.44  
CISPEP   1 SER A  470    PRO A  471          0        -3.46                     
CISPEP   2 SER B  470    PRO B  471          0         2.46                     
SITE     1 AC1 20 TRP A 178  ARG A 183  CYS A 184  SER A 226                    
SITE     2 AC1 20 PHE A 353  SER A 354  TRP A 356  MET A 358                    
SITE     3 AC1 20 GLU A 361  TRP A 447  PHE A 473  TYR A 475                    
SITE     4 AC1 20 ARG A 700  ACT A 860  H4B A1481  HOH A2365                    
SITE     5 AC1 20 HOH A2366  HOH A2368  HOH A2369  HOH A2370                    
SITE     1 AC2  8 GLN A 247  TYR A 331  TRP A 356  TYR A 357                    
SITE     2 AC2  8 GLU A 361  ASN A 366  HEM A 500  HOH A2278                    
SITE     1 AC3  6 GLY A 186  TRP A 356  VAL A 418  SER A 426                    
SITE     2 AC3  6 HEM A 500  HOH A2128                                          
SITE     1 AC4  9 VAL A 381  CYS A 382  ASP A 384   GD A1482                    
SITE     2 AC4  9 HOH A2297  HOH A2298  HOH A2372  HOH A2373                    
SITE     3 AC4  9 HOH A2374                                                     
SITE     1 AC5  2 GLU A 377  HOH A2375                                          
SITE     1 AC6  6 ARG A 365  HIS A 371  H4B A1481  HOH A2281                    
SITE     2 AC6  6 HOH A2282  HOH A2376                                          
SITE     1 AC7  3 GLU A 167  HOH A2377  HOH A2378                               
SITE     1 AC8  4 CYS A  94  CYS A  99  CYS B  94  CYS B  99                    
SITE     1 AC9 14 SER A 102  ARG A 365  ALA A 446  TRP A 447                    
SITE     2 AC9 14 HEM A 500  GOL A 880  HOH A2056  HOH A2281                    
SITE     3 AC9 14 HOH A2339  HOH A2370  TRP B 445  PHE B 460                    
SITE     4 AC9 14 HIS B 461  GLU B 463                                          
SITE     1 BC1 19 TRP B 178  ARG B 183  CYS B 184  SER B 226                    
SITE     2 BC1 19 PHE B 353  SER B 354  TRP B 356  MET B 358                    
SITE     3 BC1 19 GLU B 361  TRP B 447  PHE B 473  TYR B 475                    
SITE     4 BC1 19 ARG B 700  H4B B1481  HOH B2373  HOH B2374                    
SITE     5 BC1 19 HOH B2380  HOH B2381  HOH B2382                               
SITE     1 BC2 10 GLN B 247  ARG B 250  TYR B 331  TRP B 356                    
SITE     2 BC2 10 TYR B 357  GLU B 361  ASN B 366  HEM B 500                    
SITE     3 BC2 10 HOH B2233  HOH B2304                                          
SITE     1 BC3  4 TRP B 356  SER B 426  HOH B2140  HOH B2383                    
SITE     1 BC4  8 THR B 319  GLU B 321   GD B1482  HOH B2284                    
SITE     2 BC4  8 HOH B2285  HOH B2384  HOH B2385  HOH B2386                    
SITE     1 BC5  1 GLU B 298                                                     
SITE     1 BC6  7 TRP A  74  HOH A2350  VAL B 104  ARG B 365                    
SITE     2 BC6  7 HIS B 371  H4B B1481  HOH B2205                               
SITE     1 BC7 13 TRP A 445  PHE A 460  HIS A 461  HOH A2350                    
SITE     2 BC7 13 SER B 102  ARG B 365  ALA B 446  TRP B 447                    
SITE     3 BC7 13 HEM B 500  GOL B 880  HOH B2047  HOH B2361                    
SITE     4 BC7 13 HOH B2382                                                     
SITE     1 BC8  7 BTB A 870  HOH A2298  HOH A2299  HOH A2372                    
SITE     2 BC8  7 HOH A2373  HOH A2374  HOH A2379                               
SITE     1 BC9  5 THR B 319  GLU B 321  BTB B 870  HOH B2284                    
SITE     2 BC9  5 HOH B2285                                                     
CRYST1   62.395  110.091  153.322  90.00  90.00  90.00 P 21 21 21    8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.016027  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.009083  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.006522        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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