PDB Short entry for 1K22
HEADER    HYDROLASE/HYDROLASE INHIBITOR           26-SEP-01   1K22              
TITLE     HUMAN THROMBIN-INHIBITOR COMPLEX                                      
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTHROMBIN;                                               
COMPND   3 CHAIN: L;                                                            
COMPND   4 FRAGMENT: THROMBIN LIGHT CHAIN, RESIDUES 323-363;                    
COMPND   5 SYNONYM: ALPHA-THROMBIN, COAGULATION FACTOR II;                      
COMPND   6 EC: 3.4.21.5;                                                        
COMPND   7 MOL_ID: 2;                                                           
COMPND   8 MOLECULE: PROTHROMBIN;                                               
COMPND   9 CHAIN: H;                                                            
COMPND  10 FRAGMENT: THROMBIN HEAVY CHAIN, RESIDUES 364-622;                    
COMPND  11 SYNONYM: ALPHA-THROMBIN, COAGULATION FACTOR II;                      
COMPND  12 EC: 3.4.21.5;                                                        
COMPND  13 MOL_ID: 3;                                                           
COMPND  14 MOLECULE: HIRUDIN VARIANT-2;                                         
COMPND  15 CHAIN: I;                                                            
COMPND  16 FRAGMENT: RESIDUES 60-71                                             
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 MOL_ID: 2;                                                           
SOURCE   6 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   7 ORGANISM_COMMON: HUMAN;                                              
SOURCE   8 ORGANISM_TAXID: 9606;                                                
SOURCE   9 MOL_ID: 3;                                                           
SOURCE  10 ORGANISM_SCIENTIFIC: HIRUDO MEDICINALIS;                             
SOURCE  11 ORGANISM_COMMON: MEDICINAL LEECH;                                    
SOURCE  12 ORGANISM_TAXID: 6421                                                 
KEYWDS    COMPLEX (SERINE PROTEASE-INHIBITOR), HYDROLASE, HYDROLASE-HYDROLASE   
KEYWDS   2 INHIBITOR COMPLEX                                                    
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.T.STUBBS,D.MUSIL                                                    
REVDAT   4   29-JUL-20 1K22    1       COMPND REMARK HETNAM LINK                
REVDAT   4 2                   1       SITE   ATOM                              
REVDAT   3   13-JUL-11 1K22    1       VERSN                                    
REVDAT   2   24-FEB-09 1K22    1       VERSN                                    
REVDAT   1   08-MAY-02 1K22    0                                                
JRNL        AUTH   F.DULLWEBER,M.T.STUBBS,D.MUSIL,J.STURZEBECHER,G.KLEBE        
JRNL        TITL   FACTORISING LIGAND AFFINITY: A COMBINED THERMODYNAMIC AND    
JRNL        TITL 2 CRYSTALLOGRAPHIC STUDY OF TRYPSIN AND THROMBIN INHIBITION.   
JRNL        REF    J.MOL.BIOL.                   V. 313   593 2001              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   11676542                                                     
JRNL        DOI    10.1006/JMBI.2001.5062                                       
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   M.RENATUS,W.BODE,R.HUBER,J.STUERZEBECHER,M.T.STUBBS          
REMARK   1  TITL   STRUCTURAL AND FUNCTIONAL ANALYSES OF BENZAMIDINE-BASED      
REMARK   1  TITL 2 INHIBITORS IN COMPLEX WITH TRYPSIN: IMPLICATIONS FOR THE     
REMARK   1  TITL 3 INHIBITION OF FACTOR XA, TPA, AND UROKINASE                  
REMARK   1  REF    J.MED.CHEM.                   V.  41  5445 1998              
REMARK   1  REFN                   ISSN 0022-2623                               
REMARK   1  DOI    10.1021/JM981068G                                            
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   M.T.STUBBS,R.HUBER,W.BODE                                    
REMARK   1  TITL   CRYSTAL STRUCTURES OF FACTOR XA SPECIFIC INHIBITORS IN       
REMARK   1  TITL 2 COMPLEX WITH TRYPSIN: STRUCTURAL GROUNDS FOR INHIBITION OF   
REMARK   1  TITL 3 FACTOR XA AND SELECTIVITY AGAINST THROMBIN                   
REMARK   1  REF    FEBS LETT.                    V. 375   103 1995              
REMARK   1  REFN                   ISSN 0014-5793                               
REMARK   1  DOI    10.1016/0014-5793(95)01190-P                                 
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   M.T.STUBBS,W.BODE                                            
REMARK   1  TITL   A PLAYER OF MANY PARTS: THE SPOTLIGHT FALLS ON THROMBIN'S    
REMARK   1  TITL 2 STRUCTURE                                                    
REMARK   1  REF    THROMB.RES.                   V.  69     1 1993              
REMARK   1  REFN                   ISSN 0049-3848                               
REMARK   1  DOI    10.1016/0049-3848(93)90002-6                                 
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.93 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) : 1.93                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 500.00                         
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 10000000.000                   
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0010                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 25984                          
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) : 0.197                           
REMARK   3   FREE R VALUE                     : 0.214                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
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) : 1.93                         
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            : 2358                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 61                                      
REMARK   3   SOLVENT ATOMS            : 239                                     
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) : 10.0                            
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) : 0.006                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.290                           
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  : 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 1K22 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 24-OCT-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000014462.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-JUN-99                          
REMARK 200  TEMPERATURE           (KELVIN) : 287                                
REMARK 200  PH                             : NULL                               
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                  : NI FILTER                          
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 25984                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.930                              
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     (%) : 99.8                               
REMARK 200  DATA REDUNDANCY                : 3.900                              
REMARK 200  R MERGE                    (I) : 0.05400                            
REMARK 200  R SYM                      (I) : 0.05400                            
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) : 1.93                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 98.3                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.29800                            
REMARK 200  R SYM FOR SHELL            (I) : 0.29800                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: OTHER                        
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   (%): 50.47                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.48                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
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       34.68500            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       35.74500            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       34.68500            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       35.74500            
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: TRIMERIC                          
REMARK 350 APPLY THE FOLLOWING TO CHAINS: L, H, I, 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 CHYMOTRYPSIN NUMBERING (RATHER THAN SEQUENTIAL) SYSTEM IS            
REMARK 400 USED, BASED ON THE TOPOLOGICAL ALIGNMENT WITH THE                    
REMARK 400 STRUCTURE OF CHYMOTRYPSIN (W.BODE ET AL., 1989, EMBO J. 8,           
REMARK 400 3467-3475).                                                          
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     THR L     1H                                                     
REMARK 465     PHE L     1G                                                     
REMARK 465     GLY L     1F                                                     
REMARK 465     SER L     1E                                                     
REMARK 465     GLY L     1D                                                     
REMARK 465     GLY L    14M                                                     
REMARK 465     ARG L    15                                                      
REMARK 465     TRP H   147A                                                     
REMARK 465     THR H   147B                                                     
REMARK 465     ALA H   147C                                                     
REMARK 465     ASN H   147D                                                     
REMARK 465     VAL H   147E                                                     
REMARK 465     GLY H   147F                                                     
REMARK 465     LYS H   147G                                                     
REMARK 465     GLU H   247                                                      
REMARK 465     ASN I    53                                                      
REMARK 465     GLY I    54                                                      
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     GLU I  61    CB   CG   CD   OE1  OE2                             
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480     GLU L    1C  CG   CD   OE1  OE2                                  
REMARK 480     LYS H  236   CD   CE   NZ                                        
REMARK 480     LEU I   64   CG   CD1  CD2                                       
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 L   7      -86.84   -133.47                                   
REMARK 500    CYS H  42      177.32    171.85                                   
REMARK 500    TYR H  60A      83.12   -156.87                                   
REMARK 500    ASN H  60G      76.77   -165.36                                   
REMARK 500    HIS H  71      -58.70   -134.33                                   
REMARK 500    ILE H  79      -60.65   -123.04                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 HETATM MEL CORRESPONDS TO INHIBITOR 5 OF DULLWEBER ET AL.            
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                              NA H 392  NA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 LYS H 169   O                                                      
REMARK 620 2 THR H 172   O    81.8                                              
REMARK 620 3 PHE H 204A  O   100.4  99.0                                        
REMARK 620 4 HOH H 436   O   172.3  93.6  86.3                                  
REMARK 620 5 HOH H 518   O    66.6  72.7 165.1 106.2                            
REMARK 620 6 HOH H 574   O    80.6 162.4  85.2 103.8  99.2                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              NA H 391  NA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ARG H 221A  O                                                      
REMARK 620 2 LYS H 224   O    93.6                                              
REMARK 620 3 HOH H 419   O   160.1  68.9                                        
REMARK 620 4 HOH H 434   O   109.3 157.1  88.3                                  
REMARK 620 5 HOH H 438   O    91.6  96.7  81.5  82.3                            
REMARK 620 6 HOH H 445   O    98.5  84.5  89.5  92.6 169.8                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: CAT                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: NULL                                               
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1K1I   RELATED DB: PDB                                   
REMARK 900 BOVINE TRYPSIN - INHIBITOR COMPLEX                                   
REMARK 900 RELATED ID: 1K1J   RELATED DB: PDB                                   
REMARK 900 BOVINE TRYPSIN - INHIBITOR COMPLEX                                   
REMARK 900 RELATED ID: 1K1M   RELATED DB: PDB                                   
REMARK 900 BOVINE TRYPSIN - INHIBITOR COMPLEX                                   
REMARK 900 RELATED ID: 1K1L   RELATED DB: PDB                                   
REMARK 900 BOVINE TRYPSIN - INHIBITOR COMPLEX                                   
REMARK 900 RELATED ID: 1K1N   RELATED DB: PDB                                   
REMARK 900 BOVINE TRYPSIN - INHIBITOR COMPLEX                                   
REMARK 900 RELATED ID: 1K1O   RELATED DB: PDB                                   
REMARK 900 BOVINE TRYPSIN - INHIBITOR COMPLEX                                   
REMARK 900 RELATED ID: 1K1P   RELATED DB: PDB                                   
REMARK 900 BOVINE TRYPSIN - INHIBITOR COMPLEX                                   
REMARK 900 RELATED ID: 1K21   RELATED DB: PDB                                   
REMARK 900 HUMAN THROMBIN - INHIBITOR COMPLEX                                   
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 THROMBIN IS CLEAVED BETWEEN RESIDUES 15 AND 16. CHAIN                
REMARK 999 IDENTIFIER *L* IS USED FOR RESIDUES 1H - 15 AND CHAIN                
REMARK 999 IDENTIFIER *H* IS USED FOR RESIDUES 16 - 247.  CHAIN                 
REMARK 999 IDENTIFIER *I* IS USED FOR HIRUGEN, THE CARBOXYL TERMINUS            
REMARK 999 OF HIRUDIN, WHICH OCCUPIES THE EXOSITE.                              
DBREF  1K22 L    1H   15  UNP    P00734   THRB_HUMAN     328    363             
DBREF  1K22 H   16   247  UNP    P00734   THRB_HUMAN     364    622             
DBREF  1K22 I   53    64  UNP    P09945   ITH3_HIRME      60     71             
SEQRES   1 L   36  THR PHE GLY SER GLY GLU ALA ASP CYS GLY LEU ARG PRO          
SEQRES   2 L   36  LEU PHE GLU LYS LYS SER LEU GLU ASP LYS THR GLU ARG          
SEQRES   3 L   36  GLU LEU LEU GLU SER TYR ILE ASP GLY ARG                      
SEQRES   1 H  259  ILE VAL GLU GLY SER ASP ALA GLU ILE GLY MET SER PRO          
SEQRES   2 H  259  TRP GLN VAL MET LEU PHE ARG LYS SER PRO GLN GLU LEU          
SEQRES   3 H  259  LEU CYS GLY ALA SER LEU ILE SER ASP ARG TRP VAL LEU          
SEQRES   4 H  259  THR ALA ALA HIS CYS LEU LEU TYR PRO PRO TRP ASP LYS          
SEQRES   5 H  259  ASN PHE THR GLU ASN ASP LEU LEU VAL ARG ILE GLY LYS          
SEQRES   6 H  259  HIS SER ARG THR ARG TYR GLU ARG ASN ILE GLU LYS ILE          
SEQRES   7 H  259  SER MET LEU GLU LYS ILE TYR ILE HIS PRO ARG TYR ASN          
SEQRES   8 H  259  TRP ARG GLU ASN LEU ASP ARG ASP ILE ALA LEU MET LYS          
SEQRES   9 H  259  LEU LYS LYS PRO VAL ALA PHE SER ASP TYR ILE HIS PRO          
SEQRES  10 H  259  VAL CYS LEU PRO ASP ARG GLU THR ALA ALA SER LEU LEU          
SEQRES  11 H  259  GLN ALA GLY TYR LYS GLY ARG VAL THR GLY TRP GLY ASN          
SEQRES  12 H  259  LEU LYS GLU THR TRP THR ALA ASN VAL GLY LYS GLY GLN          
SEQRES  13 H  259  PRO SER VAL LEU GLN VAL VAL ASN LEU PRO ILE VAL GLU          
SEQRES  14 H  259  ARG PRO VAL CYS LYS ASP SER THR ARG ILE ARG ILE THR          
SEQRES  15 H  259  ASP ASN MET PHE CYS ALA GLY TYR LYS PRO ASP GLU GLY          
SEQRES  16 H  259  LYS ARG GLY ASP ALA CYS GLU GLY ASP SER GLY GLY PRO          
SEQRES  17 H  259  PHE VAL MET LYS SER PRO PHE ASN ASN ARG TRP TYR GLN          
SEQRES  18 H  259  MET GLY ILE VAL SER TRP GLY GLU GLY CYS ASP ARG ASP          
SEQRES  19 H  259  GLY LYS TYR GLY PHE TYR THR HIS VAL PHE ARG LEU LYS          
SEQRES  20 H  259  LYS TRP ILE GLN LYS VAL ILE ASP GLN PHE GLY GLU              
SEQRES   1 I   12  ASN GLY ASP PHE GLU GLU ILE PRO GLU GLU TYS LEU              
MODRES 1K22 ASN H   60G ASN  GLYCOSYLATION SITE                                 
MODRES 1K22 TYS I   63  TYR  O-SULFO-L-TYROSINE                                 
HET    TYS  I  63      16                                                       
HET    NAG  A   1      14                                                       
HET    NAG  A   2      14                                                       
HET     NA  H 391       1                                                       
HET     NA  H 392       1                                                       
HET    MEL  H 999      31                                                       
HETNAM     TYS O-SULFO-L-TYROSINE                                               
HETNAM     NAG 2-ACETAMIDO-2-DEOXY-BETA-D-GLUCOPYRANOSE                         
HETNAM      NA SODIUM ION                                                       
HETNAM     MEL [((1R)-2-{(2S)-2-[({4-[AMINO(IMINO)                              
HETNAM   2 MEL  METHYL]BENZYL}AMINO)CARBONYL]AZETIDINYL}-1-CYCLOHEXYL-          
HETNAM   3 MEL  2-OXOETHYL)AMINO]ACETIC ACID                                    
HETSYN     MEL MELAGATRAN (ASTRA-ZENECA)                                        
FORMUL   3  TYS    C9 H11 N O6 S                                                
FORMUL   4  NAG    2(C8 H15 N O6)                                               
FORMUL   5   NA    2(NA 1+)                                                     
FORMUL   7  MEL    C22 H31 N5 O4                                                
FORMUL   8  HOH   *239(H2 O)                                                    
HELIX    1   1 PHE L    7  SER L   11  5                                   5    
HELIX    2   2 THR L   14B TYR L   14J 1                                   9    
HELIX    3   3 ALA H   55  CYS H   58  5                                   4    
HELIX    4   4 PRO H   60B ASP H   60E 5                                   4    
HELIX    5   5 THR H   60I ASN H   62  5                                   3    
HELIX    6   6 ASP H  125  LEU H  130  1                                   9    
HELIX    7   7 GLU H  164  SER H  171  1                                   8    
HELIX    8   8 LYS H  185  GLY H  186C 5                                   5    
HELIX    9   9 LEU H  234  GLY H  246  1                                  13    
HELIX   10  10 PRO I   60  LEU I   64  5                                   5    
SHEET    1   A 7 SER H  20  ASP H  21  0                                        
SHEET    2   A 7 GLN H 156  PRO H 161 -1  O  VAL H 157   N  SER H  20           
SHEET    3   A 7 LYS H 135  GLY H 140 -1  N  VAL H 138   O  VAL H 158           
SHEET    4   A 7 PRO H 198  LYS H 202 -1  O  VAL H 200   N  ARG H 137           
SHEET    5   A 7 TRP H 207  TRP H 215 -1  O  TYR H 208   N  MET H 201           
SHEET    6   A 7 GLY H 226  HIS H 230 -1  O  PHE H 227   N  TRP H 215           
SHEET    7   A 7 MET H 180  ALA H 183 -1  N  PHE H 181   O  TYR H 228           
SHEET    1   B 7 GLN H  30  ARG H  35  0                                        
SHEET    2   B 7 GLU H  39  LEU H  46 -1  O  CYS H  42   N  LEU H  33           
SHEET    3   B 7 TRP H  51  THR H  54 -1  O  LEU H  53   N  SER H  45           
SHEET    4   B 7 ALA H 104  LEU H 108 -1  O  ALA H 104   N  THR H  54           
SHEET    5   B 7 LYS H  81  ILE H  90 -1  N  TYR H  89   O  LEU H 105           
SHEET    6   B 7 LEU H  64  ILE H  68 -1  N  VAL H  66   O  SER H  83           
SHEET    7   B 7 GLN H  30  ARG H  35 -1  N  PHE H  34   O  LEU H  65           
SSBOND   1 CYS L    1    CYS H  122                          1555   1555  2.47  
SSBOND   2 CYS H   42    CYS H   58                          1555   1555  2.43  
SSBOND   3 CYS H  168    CYS H  182                          1555   1555  2.43  
SSBOND   4 CYS H  191    CYS H  220                          1555   1555  2.57  
LINK         ND2 ASN H  60G                C1  NAG A   1     1555   1555  1.45  
LINK         C   GLU I  62                 N   TYS I  63     1555   1555  1.33  
LINK         C   TYS I  63                 N   LEU I  64     1555   1555  1.33  
LINK         O4  NAG A   1                 C1  NAG A   2     1555   1555  1.38  
LINK         O   LYS H 169                NA    NA H 392     1555   1555  2.43  
LINK         O   THR H 172                NA    NA H 392     1555   1555  2.32  
LINK         O   PHE H 204A               NA    NA H 392     4546   1555  2.36  
LINK         O   ARG H 221A               NA    NA H 391     1555   1555  2.37  
LINK         O   LYS H 224                NA    NA H 391     1555   1555  2.34  
LINK        NA    NA H 391                 O   HOH H 419     1555   1555  2.56  
LINK        NA    NA H 391                 O   HOH H 434     1555   1555  2.51  
LINK        NA    NA H 391                 O   HOH H 438     1555   1555  2.61  
LINK        NA    NA H 391                 O   HOH H 445     1555   1555  2.32  
LINK        NA    NA H 392                 O   HOH H 436     1555   4546  2.32  
LINK        NA    NA H 392                 O   HOH H 518     1555   1555  2.95  
LINK        NA    NA H 392                 O   HOH H 574     1555   1555  2.39  
CISPEP   1 SER H   36A   PRO H   37          0        -0.14                     
SITE     1 CAT  3 HIS H  57  ASP H 102  SER H 195                               
CRYST1   69.370   71.490   72.141  90.00 100.36  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      0.014415  0.000000  0.002635        0.00000                         
SCALE2      0.000000  0.013988  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.014091        0.00000