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Database: PDB
Entry: 1YDD
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HEADER    HYDRO-LYASE                             22-DEC-94   1YDD              
TITLE     STRUCTURAL BASIS OF INHIBITOR AFFINITY TO VARIANTS OF HUMAN CARBONIC  
TITLE    2 ANHYDRASE II                                                         
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CARBONIC ANHYDRASE II;                                     
COMPND   3 CHAIN: A;                                                            
COMPND   4 EC: 4.2.1.1;                                                         
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606                                                 
KEYWDS    HYDRO-LYASE                                                           
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    S.K.NAIR,D.W.CHRISTIANSON                                             
REVDAT   4   14-FEB-24 1YDD    1       REMARK SEQADV LINK                       
REVDAT   3   29-NOV-17 1YDD    1       HELIX                                    
REVDAT   2   24-FEB-09 1YDD    1       VERSN                                    
REVDAT   1   14-FEB-95 1YDD    0                                                
JRNL        AUTH   S.K.NAIR,J.F.KREBS,D.W.CHRISTIANSON,C.A.FIERKE               
JRNL        TITL   STRUCTURAL BASIS OF INHIBITOR AFFINITY TO VARIANTS OF HUMAN  
JRNL        TITL 2 CARBONIC ANHYDRASE II.                                       
JRNL        REF    BIOCHEMISTRY                  V.  34  3981 1995              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   7696263                                                      
JRNL        DOI    10.1021/BI00012A016                                          
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PROLSQ                                               
REMARK   3   AUTHORS     : KONNERT,HENDRICKSON                                  
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 6.50                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 9724                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.187                           
REMARK   3   R VALUE            (WORKING SET) : NULL                            
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL WITH ALL DATA.                               
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : NULL                   
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE                  (NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : NULL                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : NULL                   
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2042                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 15                                      
REMARK   3   SOLVENT ATOMS            : 101                                     
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  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : 0.013 ; 0.030               
REMARK   3    ANGLE DISTANCE                  (A) : 0.026 ; 0.050               
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : 0.031 ; 0.050               
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : 0.010 ; 0.025               
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : 0.096 ; 0.150               
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : 0.185 ; 0.500               
REMARK   3    MULTIPLE TORSION                (A) : 0.246 ; 0.500               
REMARK   3    H-BOND (X...Y)                  (A) : NULL  ; NULL                
REMARK   3    H-BOND (X-H...Y)                (A) : 0.260 ; 0.500               
REMARK   3                                                                      
REMARK   3   CONFORMATIONAL TORSION ANGLE RESTRAINTS.                           
REMARK   3    SPECIFIED                 (DEGREES) : NULL  ; NULL                
REMARK   3    PLANAR                    (DEGREES) : 15.600; 20.000              
REMARK   3    STAGGERED                 (DEGREES) : 17.200; 20.000              
REMARK   3    TRANSVERSE                (DEGREES) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND               (A**2) : 0.376 ; 1.000               
REMARK   3   MAIN-CHAIN ANGLE              (A**2) : 0.666 ; 1.500               
REMARK   3   SIDE-CHAIN BOND               (A**2) : 0.289 ; 1.000               
REMARK   3   SIDE-CHAIN ANGLE              (A**2) : 0.517 ; 1.500               
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1YDD COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000177372.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 42.86                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.15                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,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        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       20.85000            
REMARK 290   SMTRY3   2  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: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
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 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 SECONDARY STRUCTURE ELEMENTS WERE DEFINED USING THE PROGRAM          
REMARK 400 *DSSP* (W. KABSCH, C. SANDER, BIOPOLYMERS, V. 22, P. 2577,           
REMARK 400 1983).                                                               
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     SER A     2                                                      
REMARK 465     HIS A     3                                                      
REMARK 465     LYS A   261                                                      
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   O    HOH A   359     O    HOH A   360              2.03            
REMARK 500   OD2  ASP A   162     O    HOH A   291              2.17            
REMARK 500   OH   TYR A    88     O    HOH A   359              2.18            
REMARK 500   NZ   LYS A   252     O    HOH A   352              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   ND2  ASN A   178     NZ   LYS A   225     2455     1.56            
REMARK 500   NH1  ARG A    58     O    GLU A   238     2555     2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    GLU A  26   CD    GLU A  26   OE2     0.083                       
REMARK 500    GLU A 106   CD    GLU A 106   OE2     0.091                       
REMARK 500    GLU A 117   CD    GLU A 117   OE2     0.084                       
REMARK 500    SER A 188   CB    SER A 188   OG      0.084                       
REMARK 500    GLU A 221   CD    GLU A 221   OE1     0.069                       
REMARK 500    GLU A 234   CD    GLU A 234   OE1     0.073                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ARG A  27   NE  -  CZ  -  NH1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500    SER A  29   CA  -  C   -  O   ANGL. DEV. = -20.4 DEGREES          
REMARK 500    SER A  29   O   -  C   -  N   ANGL. DEV. =  17.6 DEGREES          
REMARK 500    PRO A  30   CA  -  N   -  CD  ANGL. DEV. = -10.6 DEGREES          
REMARK 500    PRO A  30   N   -  CA  -  CB  ANGL. DEV. =   9.4 DEGREES          
REMARK 500    PRO A  30   N   -  CD  -  CG  ANGL. DEV. =   8.6 DEGREES          
REMARK 500    ARG A  58   NE  -  CZ  -  NH1 ANGL. DEV. =   4.6 DEGREES          
REMARK 500    ARG A  58   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.3 DEGREES          
REMARK 500    TYR A  88   CB  -  CG  -  CD2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    LEU A 148   CA  -  CB  -  CG  ANGL. DEV. =  14.3 DEGREES          
REMARK 500    ASP A 162   CB  -  CG  -  OD1 ANGL. DEV. =   6.2 DEGREES          
REMARK 500    ARG A 182   NE  -  CZ  -  NH1 ANGL. DEV. =   3.3 DEGREES          
REMARK 500    ARG A 182   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    PRO A 201   CA  -  C   -  O   ANGL. DEV. = -21.4 DEGREES          
REMARK 500    PRO A 201   O   -  C   -  N   ANGL. DEV. =  12.0 DEGREES          
REMARK 500    PRO A 202   CA  -  N   -  CD  ANGL. DEV. = -11.1 DEGREES          
REMARK 500    PRO A 202   N   -  CA  -  CB  ANGL. DEV. =  10.3 DEGREES          
REMARK 500    PRO A 202   N   -  CD  -  CG  ANGL. DEV. =  10.4 DEGREES          
REMARK 500    ARG A 227   NE  -  CZ  -  NH1 ANGL. DEV. =   6.9 DEGREES          
REMARK 500    ARG A 227   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    ASP A 243   CB  -  CG  -  OD2 ANGL. DEV. =   5.6 DEGREES          
REMARK 500    ARG A 254   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.2 DEGREES          
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    LEU A  57      -62.95   -109.51                                   
REMARK 500    PHE A 176       69.63   -151.53                                   
REMARK 500    PRO A 202        5.75    -64.43                                   
REMARK 500    ASN A 244       47.64   -102.80                                   
REMARK 500    ASN A 253      -53.18     96.48                                   
REMARK 500    ARG A 254      147.87    -38.91                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500    ARG A  58         0.19    SIDE CHAIN                              
REMARK 500    ARG A 182         0.09    SIDE CHAIN                              
REMARK 500    ARG A 254         0.13    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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 262  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  94   NE2                                                    
REMARK 620 2 HIS A  96   NE2 111.5                                              
REMARK 620 3 HIS A 119   ND1 110.9  96.9                                        
REMARK 620 4 AZM A 264   N1   93.7 130.3 113.6                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              HG A 263  HG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLN A 137   O                                                      
REMARK 620 2 GLU A 205   O    87.6                                              
REMARK 620 3 CYS A 206   SG   89.6  93.4                                        
REMARK 620 N                    1     2                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 262                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 263                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AZM A 264                 
DBREF  1YDD A    2   261  UNP    P00918   CAH2_HUMAN       1    259             
SEQADV 1YDD ARG A  198  UNP  P00918    LEU   196 CONFLICT                       
SEQRES   1 A  259  SER HIS HIS TRP GLY TYR GLY LYS HIS ASN GLY PRO GLU          
SEQRES   2 A  259  HIS TRP HIS LYS ASP PHE PRO ILE ALA LYS GLY GLU ARG          
SEQRES   3 A  259  GLN SER PRO VAL ASP ILE ASP THR HIS THR ALA LYS TYR          
SEQRES   4 A  259  ASP PRO SER LEU LYS PRO LEU SER VAL SER TYR ASP GLN          
SEQRES   5 A  259  ALA THR SER LEU ARG ILE LEU ASN ASN GLY HIS ALA PHE          
SEQRES   6 A  259  ASN VAL GLU PHE ASP ASP SER GLN ASP LYS ALA VAL LEU          
SEQRES   7 A  259  LYS GLY GLY PRO LEU ASP GLY THR TYR ARG LEU ILE GLN          
SEQRES   8 A  259  PHE HIS PHE HIS TRP GLY SER LEU ASP GLY GLN GLY SER          
SEQRES   9 A  259  GLU HIS THR VAL ASP LYS LYS LYS TYR ALA ALA GLU LEU          
SEQRES  10 A  259  HIS LEU VAL HIS TRP ASN THR LYS TYR GLY ASP PHE GLY          
SEQRES  11 A  259  LYS ALA VAL GLN GLN PRO ASP GLY LEU ALA VAL LEU GLY          
SEQRES  12 A  259  ILE PHE LEU LYS VAL GLY SER ALA LYS PRO GLY LEU GLN          
SEQRES  13 A  259  LYS VAL VAL ASP VAL LEU ASP SER ILE LYS THR LYS GLY          
SEQRES  14 A  259  LYS SER ALA ASP PHE THR ASN PHE ASP PRO ARG GLY LEU          
SEQRES  15 A  259  LEU PRO GLU SER LEU ASP TYR TRP THR TYR PRO GLY SER          
SEQRES  16 A  259  ARG THR THR PRO PRO LEU LEU GLU CYS VAL THR TRP ILE          
SEQRES  17 A  259  VAL LEU LYS GLU PRO ILE SER VAL SER SER GLU GLN VAL          
SEQRES  18 A  259  LEU LYS PHE ARG LYS LEU ASN PHE ASN GLY GLU GLY GLU          
SEQRES  19 A  259  PRO GLU GLU LEU MET VAL ASP ASN TRP ARG PRO ALA GLN          
SEQRES  20 A  259  PRO LEU LYS ASN ARG GLN ILE LYS ALA SER PHE LYS              
HET     ZN  A 262       1                                                       
HET     HG  A 263       1                                                       
HET    AZM  A 264      13                                                       
HETNAM      ZN ZINC ION                                                         
HETNAM      HG MERCURY (II) ION                                                 
HETNAM     AZM 5-ACETAMIDO-1,3,4-THIADIAZOLE-2-SULFONAMIDE                      
FORMUL   2   ZN    ZN 2+                                                        
FORMUL   3   HG    HG 2+                                                        
FORMUL   4  AZM    C4 H6 N4 O3 S2                                               
FORMUL   5  HOH   *101(H2 O)                                                    
HELIX    1   A PRO A   13  LYS A   18  5                                   6    
HELIX    2   B PRO A   21  LYS A   24  5                                   4    
HELIX    3   C THR A  125  TYR A  128  5                                   3    
HELIX    4   D PHE A  131  ALA A  134  1                                   4    
HELIX    5   E PRO A  155  ILE A  167  5158-163 RIGHT HANDED ALPHA        13    
HELIX    6   F PRO A  181  LEU A  184  5                                   4    
HELIX    7   G SER A  220  PHE A  226  1                                   7    
SHEET    1   S10 SER A 173  ASP A 175  0                                        
SHEET    2   S10 SER A  56  ASN A  61 -1  O  ILE A  59   N  ALA A 174           
SHEET    3   S10 PHE A  66  PHE A  70 -1  O  ASN A  67   N  LEU A  60           
SHEET    4   S10 TYR A  88  TRP A  97 -1  O  PHE A  93   N  VAL A  68           
SHEET    5   S10 ALA A 116  ASN A 124 -1  O  HIS A 119   N  HIS A  94           
SHEET    6   S10 LEU A 141  VAL A 150 -1  O  LEU A 144   N  LEU A 120           
SHEET    7   S10 VAL A 207  LEU A 212  1  O  ILE A 210   N  GLY A 145           
SHEET    8   S10 TYR A 191  GLY A 196 -1  O  TRP A 192   N  VAL A 211           
SHEET    9   S10 LYS A 257  ALA A 258 -1  O  LYS A 257   N  THR A 193           
SHEET   10   S10 LYS A  39  TYR A  40  1  O  LYS A  39   N  ALA A 258           
LINK         NE2 HIS A  94                ZN    ZN A 262     1555   1555  2.29  
LINK         NE2 HIS A  96                ZN    ZN A 262     1555   1555  1.90  
LINK         ND1 HIS A 119                ZN    ZN A 262     1555   1555  2.05  
LINK         O   GLN A 137                HG    HG A 263     1555   1555  2.80  
LINK         O   GLU A 205                HG    HG A 263     1555   1555  3.25  
LINK         SG  CYS A 206                HG    HG A 263     1555   1555  2.28  
LINK        ZN    ZN A 262                 N1  AZM A 264     1555   1555  1.70  
CISPEP   1 SER A   29    PRO A   30          0         4.46                     
CISPEP   2 PRO A  201    PRO A  202          0        -6.39                     
SITE     1 AC1  4 HIS A  94  HIS A  96  HIS A 119  AZM A 264                    
SITE     1 AC2  3 GLN A 137  GLU A 205  CYS A 206                               
SITE     1 AC3  9 HIS A  94  HIS A  96  HIS A 119  VAL A 121                    
SITE     2 AC3  9 PHE A 131  ARG A 198  THR A 199  THR A 200                    
SITE     3 AC3  9  ZN A 262                                                     
CRYST1   42.700   41.700   73.000  90.00 104.60  90.00 P 1 21 1      2          
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      0.023419  0.000000  0.006100        0.00000                         
SCALE2      0.000000  0.023981  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.014156        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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