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Database: PDB
Entry: 1KCT
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Original site: 1KCT 
HEADER    SERINE PROTEASE INHIBITOR               06-AUG-96   1KCT              
TITLE     ALPHA1-ANTITRYPSIN                                                    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ALPHA1-ANTITRYPSIN;                                        
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: ALPHA1-PROTEINASE INHIBITOR;                                
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: A1AT;                                                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PET-8C;                                   
SOURCE  10 EXPRESSION_SYSTEM_GENE: A1AT                                         
KEYWDS    SERPIN, SERINE PROTEASE INHIBITOR, GLYCOPROTEIN                       
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    H.K.SONG,S.W.SUH                                                      
REVDAT   5   07-FEB-24 1KCT    1       REMARK                                   
REVDAT   4   03-NOV-21 1KCT    1       SEQADV                                   
REVDAT   3   18-APR-18 1KCT    1       REMARK                                   
REVDAT   2   24-FEB-09 1KCT    1       VERSN                                    
REVDAT   1   11-JAN-97 1KCT    0                                                
JRNL        AUTH   H.K.SONG,K.N.LEE,K.S.KWON,M.H.YU,S.W.SUH                     
JRNL        TITL   CRYSTAL STRUCTURE OF AN UNCLEAVED ALPHA 1-ANTITRYPSIN        
JRNL        TITL 2 REVEALS THE CONFORMATION OF ITS INHIBITORY REACTIVE LOOP.    
JRNL        REF    FEBS LETT.                    V. 377   150 1995              
JRNL        REFN                   ISSN 0014-5793                               
JRNL        PMID   8543039                                                      
JRNL        DOI    10.1016/0014-5793(95)01331-8                                 
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.46 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 3.46                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 2.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 81.2                           
REMARK   3   NUMBER OF REFLECTIONS             : 4079                           
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 SET) : 0.184                           
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   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2965                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 0                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 20.00                          
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  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.015                           
REMARK   3   BOND ANGLES            (DEGREES) : 2.440                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 26.42                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.940                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PARHCSDX.PRO                                   
REMARK   3  PARAMETER FILE  2  : NULL                                           
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : TOPHCSDX.PRO                                   
REMARK   3  TOPOLOGY FILE  2   : NULL                                           
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1KCT 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_1000174406.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 10-NOV-94                          
REMARK 200  TEMPERATURE           (KELVIN) : 295                                
REMARK 200  PH                             : 8.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : DIFFRACTOMETER                     
REMARK 200  DETECTOR MANUFACTURER          : ENRAF-NONIUS FAST                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MADNES                             
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 4380                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.500                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 82.6                               
REMARK 200  DATA REDUNDANCY                : 2.500                              
REMARK 200  R MERGE                    (I) : 0.10600                            
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) : 3.46                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.60                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 63.0                               
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: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 48.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.33                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 8.5                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y,-Z                                                 
REMARK 290       3555   X+1/2,Y+1/2,Z                                           
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        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   3  1.000000  0.000000  0.000000       57.43500            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       19.99000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       57.43500            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       19.99000            
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: 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 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     GLU A     1                                                      
REMARK 465     ASP A     2                                                      
REMARK 465     PRO A     3                                                      
REMARK 465     GLN A     4                                                      
REMARK 465     GLY A     5                                                      
REMARK 465     ASP A     6                                                      
REMARK 465     ALA A     7                                                      
REMARK 465     ALA A     8                                                      
REMARK 465     GLN A     9                                                      
REMARK 465     LYS A    10                                                      
REMARK 465     THR A    11                                                      
REMARK 465     ASP A    12                                                      
REMARK 465     THR A    13                                                      
REMARK 465     SER A    14                                                      
REMARK 465     HIS A    15                                                      
REMARK 465     HIS A    16                                                      
REMARK 465     ASP A    17                                                      
REMARK 465     GLN A    18                                                      
REMARK 465     ASP A    19                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     HIS A  20    CG   ND1  CD2  CE1  NE2                             
REMARK 470     LYS A 394    CG   CD   CE   NZ                                   
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    LEU A 126   CA  -  CB  -  CG  ANGL. DEV. =  18.6 DEGREES          
REMARK 500    PRO A 197   C   -  N   -  CA  ANGL. DEV. =  11.3 DEGREES          
REMARK 500    PRO A 255   C   -  N   -  CA  ANGL. DEV. =  11.3 DEGREES          
REMARK 500    LEU A 286   CA  -  CB  -  CG  ANGL. DEV. =  14.2 DEGREES          
REMARK 500    PRO A 326   C   -  N   -  CA  ANGL. DEV. =  12.6 DEGREES          
REMARK 500    ILE A 360   N   -  CA  -  C   ANGL. DEV. = -22.3 DEGREES          
REMARK 500    PRO A 361   C   -  N   -  CA  ANGL. DEV. = -17.4 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    PRO A  21       75.47    -69.30                                   
REMARK 500    LEU A  30      -32.46    174.52                                   
REMARK 500    LEU A  41      -53.93   -140.54                                   
REMARK 500    ALA A  42       32.52    -75.85                                   
REMARK 500    HIS A  43      -42.33   -138.43                                   
REMARK 500    ASN A  46       29.67    173.03                                   
REMARK 500    SER A  47      -42.40   -147.87                                   
REMARK 500    VAL A  55      -50.39   -149.33                                   
REMARK 500    ILE A  57      -65.64    -95.31                                   
REMARK 500    ALA A  59      -68.92   -104.14                                   
REMARK 500    ALA A  62      -22.56   -154.83                                   
REMARK 500    LEU A  64       48.85   -108.95                                   
REMARK 500    LEU A  66      -64.34   -122.56                                   
REMARK 500    ALA A  68      121.45    167.38                                   
REMARK 500    THR A  72      -79.00    -76.35                                   
REMARK 500    HIS A  73       41.09    -69.88                                   
REMARK 500    GLU A  75      -39.05   -172.58                                   
REMARK 500    ILE A  76      -77.56    -72.93                                   
REMARK 500    LEU A  80       42.90    -70.36                                   
REMARK 500    ASN A  81      -58.69     71.53                                   
REMARK 500    LEU A  84       -3.12    -44.00                                   
REMARK 500    GLU A  89      -71.52    -52.10                                   
REMARK 500    ALA A  90      -12.20    -49.89                                   
REMARK 500    GLN A  91       60.76   -112.25                                   
REMARK 500    ILE A  92      -10.07   -165.09                                   
REMARK 500    GLN A  97       35.06    -76.15                                   
REMARK 500    GLU A  98       51.32   -157.32                                   
REMARK 500    LEU A  99       17.79    169.48                                   
REMARK 500    LEU A 100        8.76   -158.68                                   
REMARK 500    ARG A 101       -7.06   -167.76                                   
REMARK 500    ASN A 104      -23.43   -172.84                                   
REMARK 500    PRO A 106       99.93    -27.00                                   
REMARK 500    ASP A 107     -174.47    -55.14                                   
REMARK 500    SER A 108      -56.86   -120.17                                   
REMARK 500    GLN A 109      -51.17   -122.18                                   
REMARK 500    GLN A 111     -108.74     55.89                                   
REMARK 500    LEU A 112      166.29     87.56                                   
REMARK 500    THR A 113       37.12   -151.50                                   
REMARK 500    LEU A 118      146.30     68.10                                   
REMARK 500    LEU A 124     -148.76   -155.91                                   
REMARK 500    LYS A 125      -24.75   -162.33                                   
REMARK 500    LEU A 126     -169.37     29.25                                   
REMARK 500    GLU A 132       56.50   -104.45                                   
REMARK 500    ASP A 133      -66.34   -157.90                                   
REMARK 500    HIS A 139      -22.38     75.11                                   
REMARK 500    SER A 140      101.34    -10.02                                   
REMARK 500    THR A 150       38.77    -78.83                                   
REMARK 500    LYS A 155       27.12    -68.65                                   
REMARK 500    GLN A 156      -21.95   -157.20                                   
REMARK 500    ILE A 157      -68.89    -96.43                                   
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS     129 RAMACHANDRAN OUTLIERS.                        
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: P1                                                  
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: REACTIVE SITE IN INHIBITORY LOOP.                  
DBREF  1KCT A    1   394  UNP    P01009   A1AT_HUMAN      25    418             
SEQADV 1KCT ALA A   59  UNP  P01009    THR    83 ENGINEERED MUTATION            
SEQADV 1KCT ALA A   68  UNP  P01009    THR    92 ENGINEERED MUTATION            
SEQADV 1KCT GLY A   70  UNP  P01009    ALA    94 ENGINEERED MUTATION            
SEQRES   1 A  394  GLU ASP PRO GLN GLY ASP ALA ALA GLN LYS THR ASP THR          
SEQRES   2 A  394  SER HIS HIS ASP GLN ASP HIS PRO THR PHE ASN LYS ILE          
SEQRES   3 A  394  THR PRO ASN LEU ALA GLU PHE ALA PHE SER LEU TYR ARG          
SEQRES   4 A  394  GLN LEU ALA HIS GLN SER ASN SER THR ASN ILE PHE PHE          
SEQRES   5 A  394  SER PRO VAL SER ILE ALA ALA ALA PHE ALA MET LEU SER          
SEQRES   6 A  394  LEU GLY ALA LYS GLY ASP THR HIS ASP GLU ILE LEU GLU          
SEQRES   7 A  394  GLY LEU ASN PHE ASN LEU THR GLU ILE PRO GLU ALA GLN          
SEQRES   8 A  394  ILE HIS GLU GLY PHE GLN GLU LEU LEU ARG THR LEU ASN          
SEQRES   9 A  394  GLN PRO ASP SER GLN LEU GLN LEU THR THR GLY ASN GLY          
SEQRES  10 A  394  LEU PHE LEU SER GLU GLY LEU LYS LEU VAL ASP LYS PHE          
SEQRES  11 A  394  LEU GLU ASP VAL LYS LYS LEU TYR HIS SER GLU ALA PHE          
SEQRES  12 A  394  THR VAL ASN PHE GLY ASP THR GLU GLU ALA LYS LYS GLN          
SEQRES  13 A  394  ILE ASN ASP TYR VAL GLU LYS GLY THR GLN GLY LYS ILE          
SEQRES  14 A  394  VAL ASP LEU VAL LYS GLU LEU ASP ARG ASP THR VAL PHE          
SEQRES  15 A  394  ALA LEU VAL ASN TYR ILE PHE PHE LYS GLY LYS TRP GLU          
SEQRES  16 A  394  ARG PRO PHE GLU VAL LYS ASP THR GLU GLU GLU ASP PHE          
SEQRES  17 A  394  HIS VAL ASP GLN VAL THR THR VAL LYS VAL PRO MET MET          
SEQRES  18 A  394  LYS ARG LEU GLY MET PHE ASN ILE GLN HIS CYS LYS LYS          
SEQRES  19 A  394  LEU SER SER TRP VAL LEU LEU MET LYS TYR LEU GLY ASN          
SEQRES  20 A  394  ALA THR ALA ILE PHE PHE LEU PRO ASP GLU GLY LYS LEU          
SEQRES  21 A  394  GLN HIS LEU GLU ASN GLU LEU THR HIS ASP ILE ILE THR          
SEQRES  22 A  394  LYS PHE LEU GLU ASN GLU ASP ARG ARG SER ALA SER LEU          
SEQRES  23 A  394  HIS LEU PRO LYS LEU SER ILE THR GLY THR TYR ASP LEU          
SEQRES  24 A  394  LYS SER VAL LEU GLY GLN LEU GLY ILE THR LYS VAL PHE          
SEQRES  25 A  394  SER ASN GLY ALA ASP LEU SER GLY VAL THR GLU GLU ALA          
SEQRES  26 A  394  PRO LEU LYS LEU SER LYS ALA VAL HIS LYS ALA VAL LEU          
SEQRES  27 A  394  THR ILE ASP GLU LYS GLY THR GLU ALA ALA GLY ALA MET          
SEQRES  28 A  394  PHE LEU GLU ALA ILE PRO MET SER ILE PRO PRO GLU VAL          
SEQRES  29 A  394  LYS PHE ASN LYS PRO PHE VAL PHE LEU MET ILE GLU GLN          
SEQRES  30 A  394  ASN THR LYS SER PRO LEU PHE MET GLY LYS VAL VAL ASN          
SEQRES  31 A  394  PRO THR GLN LYS                                              
HELIX    1   1 ASN A   24  THR A   27  1                                   4    
HELIX    2   2 ALA A   34  TYR A   38  1                                   5    
HELIX    3   3 LEU A  131  LEU A  137  1                                   7    
HELIX    4   4 ASP A  270  THR A  273  1                                   4    
HELIX    5   5 LEU A  303  LEU A  306  1                                   4    
HELIX    6   6 THR A  309  VAL A  311  5                                   3    
SHEET    1   A 2 ILE A  50  PHE A  52  0                                        
SHEET    2   A 2 MET A 385  LYS A 387 -1  N  LYS A 387   O  ILE A  50           
SHEET    1   B 2 ALA A 248  ILE A 251  0                                        
SHEET    2   B 2 LEU A 373  GLU A 376 -1  N  ILE A 375   O  THR A 249           
SITE     1  P1  1 MET A 358                                                     
CRYST1  114.870   39.980   92.420  90.00 102.82  90.00 C 1 2 1       4          
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      0.008705  0.000000  0.001981        0.00000                         
SCALE2      0.000000  0.025013  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011097        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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