GenomeNet

Database: PDB
Entry: 1G37
LinkDB: 1G37
Original site: 1G37 
HEADER    HYDROLASE/HYDROLASE INHIBITOR           23-OCT-00   1G37              
TITLE     CRYSTAL STRUCTURE OF HUMAN ALPHA-THROMBIN COMPLEXED WITH BCH-10556 AND
TITLE    2 EXOSITE-DIRECTED PEPTIDE                                             
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ALPHA THROMBIN;                                            
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: COAGULATION FACTOR II;                                      
COMPND   5 EC: 3.4.21.5;                                                        
COMPND   6 MOL_ID: 2;                                                           
COMPND   7 MOLECULE: THROMBIN NONAPEPTIDE INHIBITOR;                            
COMPND   8 CHAIN: B;                                                            
COMPND   9 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 TISSUE: BLOOD;                                                       
SOURCE   6 OTHER_DETAILS: THROMBIN PURCHASED FROM HAEMATOLOGIC TECHNOLOGIES;    
SOURCE   7 MOL_ID: 2;                                                           
SOURCE   8 SYNTHETIC: YES                                                       
KEYWDS    PROTEASE, THROMBIN, INHIBITOR, BLOOD CLOTTING, HYDROLASE-HYDROLASE    
KEYWDS   2 INHIBITOR COMPLEX                                                    
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.BACHAND,M.TARAZI,Y.ST-DENIS,J.J.EDMUNDS,P.D.WINOCOUR,L.LEBLOND,     
AUTHOR   2 M.A.SIDDIQUI                                                         
REVDAT   4   09-AUG-23 1G37    1       REMARK LINK                              
REVDAT   3   13-JUL-11 1G37    1       VERSN                                    
REVDAT   2   24-FEB-09 1G37    1       VERSN                                    
REVDAT   1   21-APR-01 1G37    0                                                
JRNL        AUTH   B.BACHAND,M.TARAZI,Y.ST-DENIS,J.J.EDMUNDS,P.D.WINOCOUR,      
JRNL        AUTH 2 L.LEBLOND,M.A.SIDDIQUI                                       
JRNL        TITL   POTENT AND SELECTIVE BICYCLIC LACTAM INHIBITORS OF THROMBIN. 
JRNL        TITL 2 PART 4: TRANSITION STATE INHIBITORS.                         
JRNL        REF    BIOORG.MED.CHEM.LETT.         V.  11   287 2001              
JRNL        REFN                   ISSN 0960-894X                               
JRNL        PMID   11212093                                                     
JRNL        DOI    10.1016/S0960-894X(00)00636-3                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.00 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.1                                           
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00                           
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)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 23917                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.198                           
REMARK   3   FREE R VALUE                     : 0.248                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 10.000                          
REMARK   3   FREE R VALUE TEST SET COUNT      : 2387                            
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            : 2323                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 40                                      
REMARK   3   SOLVENT ATOMS            : 81                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 25.00                          
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  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) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
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  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1G37 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-NOV-00.                  
REMARK 100 THE DEPOSITION ID IS D_1000012176.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 02-APR-97                          
REMARK 200  TEMPERATURE           (KELVIN) : 296.0                              
REMARK 200  PH                             : 6.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RU300                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : GRAPHITE                           
REMARK 200  OPTICS                         : MONOCHROMATOR                      
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IIC                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 24483                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.000                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.0                               
REMARK 200  DATA REDUNDANCY                : 3.700                              
REMARK 200  R MERGE                    (I) : 0.06600                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 16.3000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.07                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 90.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.80                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.19600                            
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: ISOMORPHOUS WITH OTHER       
REMARK 200  THROMBIN COMPLEXES                                                  
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: PDB ENTRY 1IHS                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 54.56                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.71                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8000, SODIUM PHOSPHATE, PH 6.5,      
REMARK 280  VAPOR DIFFUSION, HANGING DROP AT 296K, TEMPERATURE 296.0K           
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       35.72500            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       36.01500            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       35.72500            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       36.01500            
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 300 REMARK: THE MOLECULE ACTS AS A MONOMER                               
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: 2090 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 12520 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -7.0 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     ASP A    14L                                                     
REMARK 465     GLY A    14M                                                     
REMARK 465     ARG A    15                                                      
REMARK 465     TRP A   147A                                                     
REMARK 465     THR A   147B                                                     
REMARK 465     ALA A   147C                                                     
REMARK 465     ASN A   147D                                                     
REMARK 465     VAL A   147E                                                     
REMARK 465     GLY A   147F                                                     
REMARK 465     LYS A   147G                                                     
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   HD1  HIS A    91     H    ARG A    93              1.32            
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  HH21  ARG A    75    HH21  ARG A    75     2555     1.03            
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 137   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.5 DEGREES          
REMARK 500    ARG A 137   NE  -  CZ  -  NH2 ANGL. DEV. =   3.2 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    PHE A   7      -82.30   -126.38                                   
REMARK 500    TYR A  60A      80.73   -153.48                                   
REMARK 500    ASN A  60G      83.19   -159.68                                   
REMARK 500    HIS A  71      -55.13   -128.53                                   
REMARK 500    SER A 115     -168.66   -161.48                                   
REMARK 500    GLU B 362       33.27    -73.78                                   
REMARK 500    TYR B 363      -30.37   -145.03                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE 110 A 900                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN B OF THROMBIN NONAPEPTIDE   
REMARK 800  INHIBITOR                                                           
DBREF  1G37 A    1B  245  UNP    P00734   THRB_HUMAN     334    620             
DBREF  1G37 B  356   364  PDB    1G37     1G37           356    364             
SEQRES   1 A  287  ALA ASP CYS GLY LEU ARG PRO LEU PHE GLU LYS LYS SER          
SEQRES   2 A  287  LEU GLU ASP LYS THR GLU ARG GLU LEU LEU GLU SER TYR          
SEQRES   3 A  287  ILE ASP GLY ARG ILE VAL GLU GLY SER ASP ALA GLU ILE          
SEQRES   4 A  287  GLY MET SER PRO TRP GLN VAL MET LEU PHE ARG LYS SER          
SEQRES   5 A  287  PRO GLN GLU LEU LEU CYS GLY ALA SER LEU ILE SER ASP          
SEQRES   6 A  287  ARG TRP VAL LEU THR ALA ALA HIS CYS LEU LEU TYR PRO          
SEQRES   7 A  287  PRO TRP ASP LYS ASN PHE THR GLU ASN ASP LEU LEU VAL          
SEQRES   8 A  287  ARG ILE GLY LYS HIS SER ARG THR ARG TYR GLU ARG ASN          
SEQRES   9 A  287  ILE GLU LYS ILE SER MET LEU GLU LYS ILE TYR ILE HIS          
SEQRES  10 A  287  PRO ARG TYR ASN TRP ARG GLU ASN LEU ASP ARG ASP ILE          
SEQRES  11 A  287  ALA LEU MET LYS LEU LYS LYS PRO VAL ALA PHE SER ASP          
SEQRES  12 A  287  TYR ILE HIS PRO VAL CYS LEU PRO ASP ARG GLU THR ALA          
SEQRES  13 A  287  ALA SER LEU LEU GLN ALA GLY TYR LYS GLY ARG VAL THR          
SEQRES  14 A  287  GLY TRP GLY ASN LEU LYS GLU THR TRP THR ALA ASN VAL          
SEQRES  15 A  287  GLY LYS GLY GLN PRO SER VAL LEU GLN VAL VAL ASN LEU          
SEQRES  16 A  287  PRO ILE VAL GLU ARG PRO VAL CYS LYS ASP SER THR ARG          
SEQRES  17 A  287  ILE ARG ILE THR ASP ASN MET PHE CYS ALA GLY TYR LYS          
SEQRES  18 A  287  PRO ASP GLU GLY LYS ARG GLY ASP ALA CYS GLU GLY ASP          
SEQRES  19 A  287  SER GLY GLY PRO PHE VAL MET LYS SER PRO PHE ASN ASN          
SEQRES  20 A  287  ARG TRP TYR GLN MET GLY ILE VAL SER TRP GLY GLU GLY          
SEQRES  21 A  287  CYS ASP ARG ASP GLY LYS TYR GLY PHE TYR THR HIS VAL          
SEQRES  22 A  287  PHE ARG LEU LYS LYS TRP ILE GLN LYS VAL ILE ASP GLN          
SEQRES  23 A  287  PHE                                                          
SEQRES   1 B    9  PHE GLU ALA ILE PRO ALA GLU TYR LEU                          
HET    110  A 900      43                                                       
HETNAM     110 3-(4-AMINO-CYCLOHEXYL)-2-HYDROXY-3-[(4-OXO-2-                    
HETNAM   2 110  PHENYLMETHANESULFONYL-1,2,3,4-TETRAHYDRO-PYRROLO[1,2-           
HETNAM   3 110  A]PYRAZINE-6-CARBONYL)-AMINO]-PROPIONIC ACID BUTYL              
HETNAM   4 110  ESTER                                                           
HETSYN     110 BCH-10556                                                        
FORMUL   3  110    C28 H38 N4 O7 S                                              
FORMUL   4  HOH   *81(H2 O)                                                     
HELIX    1   1 PHE A    7  SER A   11  5                                   5    
HELIX    2   2 THR A   14B TYR A   14J 1                                   9    
HELIX    3   3 ALA A   55  CYS A   58  5                                   4    
HELIX    4   4 PRO A   60B ASP A   60E 5                                   4    
HELIX    5   5 THR A   60I ASN A   62  5                                   3    
HELIX    6   6 ASP A  125  LEU A  130  1                                   9    
HELIX    7   7 GLU A  164  ASP A  170  1                                   7    
HELIX    8   8 LYS A  185  GLY A  186C 5                                   5    
HELIX    9   9 LEU A  234  PHE A  245  1                                  12    
SHEET    1   A 7 SER A  20  ASP A  21  0                                        
SHEET    2   A 7 GLN A 156  PRO A 161 -1  N  VAL A 157   O  SER A  20           
SHEET    3   A 7 LYS A 135  GLY A 140 -1  N  GLY A 136   O  LEU A 160           
SHEET    4   A 7 PRO A 198  LYS A 202 -1  O  PRO A 198   N  THR A 139           
SHEET    5   A 7 TRP A 207  TRP A 215 -1  N  TYR A 208   O  MET A 201           
SHEET    6   A 7 GLY A 226  HIS A 230 -1  N  PHE A 227   O  TRP A 215           
SHEET    7   A 7 MET A 180  ALA A 183 -1  O  PHE A 181   N  TYR A 228           
SHEET    1   B 7 GLN A  30  ARG A  35  0                                        
SHEET    2   B 7 GLU A  39  LEU A  46 -1  O  GLU A  39   N  ARG A  35           
SHEET    3   B 7 TRP A  51  THR A  54 -1  N  LEU A  53   O  SER A  45           
SHEET    4   B 7 ALA A 104  LEU A 108 -1  O  ALA A 104   N  THR A  54           
SHEET    5   B 7 LYS A  81  ILE A  90 -1  N  GLU A  86   O  LYS A 107           
SHEET    6   B 7 LEU A  64  ILE A  68 -1  O  LEU A  64   N  LEU A  85           
SHEET    7   B 7 GLN A  30  ARG A  35 -1  N  MET A  32   O  ARG A  67           
SSBOND   1 CYS A    1    CYS A  122                          1555   1555  2.00  
SSBOND   2 CYS A   42    CYS A   58                          1555   1555  2.04  
SSBOND   3 CYS A  168    CYS A  182                          1555   1555  2.01  
SSBOND   4 CYS A  191    CYS A  220                          1555   1555  2.05  
LINK         OG  SER A 195                 C3  110 A 900     1555   1555  1.44  
CISPEP   1 SER A   36A   PRO A   37          0        -0.96                     
SITE     1 AC1 21 LEU A  40  LEU A  41  HIS A  57  TYR A  60A                   
SITE     2 AC1 21 TRP A  60D GLU A  97A ASN A  98  ILE A 174                    
SITE     3 AC1 21 ASP A 189  ALA A 190  CYS A 191  GLU A 192                    
SITE     4 AC1 21 GLY A 193  ASP A 194  SER A 195  SER A 214                    
SITE     5 AC1 21 TRP A 215  GLY A 216  GLY A 219  HOH A 423                    
SITE     6 AC1 21 HOH A 478                                                     
SITE     1 AC2  8 PHE A  34  LYS A  36  GLN A  38  ARG A  67                    
SITE     2 AC2  8 ARG A  73  THR A  74  ARG A  75  TYR A  76                    
CRYST1   71.450   72.030   73.150  90.00 100.71  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      0.013996  0.000000  0.002647        0.00000                         
SCALE2      0.000000  0.013883  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013913        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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