HEADER    HYDROLASE (SERINE PROTEINASE)           16-SEP-87   1NTP              
TITLE     USE OF THE NEUTRON DIFFRACTION H/D EXCHANGE TECHNIQUE TO DETERMINE THE
TITLE    2 CONFORMATIONAL DYNAMICS OF TRYPSIN                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: BETA-TRYPSIN;                                              
COMPND   3 CHAIN: A;                                                            
COMPND   4 EC: 3.4.21.4;                                                        
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: BOS TAURUS;                                     
SOURCE   3 ORGANISM_COMMON: CATTLE;                                             
SOURCE   4 ORGANISM_TAXID: 9913                                                 
KEYWDS    HYDROLASE (SERINE PROTEINASE)                                         
EXPDTA    NEUTRON DIFFRACTION                                                   
AUTHOR    A.A.KOSSIAKOFF                                                        
REVDAT   8   30-OCT-24 1NTP    1       SEQADV                                   
REVDAT   7   29-NOV-17 1NTP    1       HELIX                                    
REVDAT   6   15-DEC-09 1NTP    1       HETATM HETNAM                            
REVDAT   5   24-FEB-09 1NTP    1       VERSN                                    
REVDAT   4   01-APR-03 1NTP    1       JRNL                                     
REVDAT   3   20-JUL-95 1NTP    1       EXPDTA                                   
REVDAT   2   15-APR-91 1NTP    3       HETATM                                   
REVDAT   1   16-JAN-88 1NTP    0                                                
JRNL        AUTH   A.A.KOSSIAKOFF                                               
JRNL        TITL   USE OF THE NEUTRON DIFFRACTION--H/D EXCHANGE TECHNIQUE TO    
JRNL        TITL 2 DETERMINE THE CONFORMATIONAL DYNAMICS OF TRYPSIN             
JRNL        REF    BASIC LIFE SCI.               V.  27   281 1984              
JRNL        REFN                   ISSN 0090-5542                               
JRNL        PMID   6712567                                                      
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   A.A.KOSSIAKOFF                                               
REMARK   1  TITL   PROTEIN DYNAMICS INVESTIGATED BY THE NEUTRON                 
REMARK   1  TITL 2 DIFFRACTION-HYDROGEN EXCHANGE TECHNIQUE                      
REMARK   1  REF    NATURE                        V. 296   713 1982              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   A.A.KOSSIAKOFF,S.A.SPENCER                                   
REMARK   1  TITL   DIRECT DETERMINATION OF THE PROTONATION STATES OF ASPARTIC   
REMARK   1  TITL 2 ACID-102 AND HISTIDINE-57 IN THE TETRAHEDRAL INTERMEDIATE OF 
REMARK   1  TITL 3 THE SERINE PROTEASES. NEUTRON STRUCTURE OF TRYPSIN           
REMARK   1  REF    BIOCHEMISTRY                  V.  20  6462 1981              
REMARK   1  REFN                   ISSN 0006-2960                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   A.A.KOSSIAKOFF,S.A.SPENCER                                   
REMARK   1  TITL   NEUTRON DIFFRACTION IDENTIFIES HIS 57 AS THE CATALYTIC BASE  
REMARK   1  TITL 2 IN TRYPSIN                                                   
REMARK   1  REF    NATURE                        V. 288   414 1980              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   1 REFERENCE 4                                                          
REMARK   1  AUTH   J.L.CHAMBERS,R.M.STROUD                                      
REMARK   1  TITL   THE ACCURACY OF REFINED PROTEIN STRUCTURES, COMPARISON OF    
REMARK   1  TITL 2 TWO INDEPENDENTLY REFINED MODELS OF BOVINE TRYPSIN           
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.B      V.  35  1861 1979              
REMARK   1  REFN                   ISSN 0108-7681                               
REMARK   1 REFERENCE 5                                                          
REMARK   1  AUTH   J.L.CHAMBERS,R.M.STROUD                                      
REMARK   1  TITL   DIFFERENCE-FOURIER REFINEMENT OF THE STRUCTURE OF            
REMARK   1  TITL 2 DIP-TRYPSIN AT 1.5 ANGSTROMS USING A MINICOMPUTER TECHNIQUE  
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.B      V.  33  1824 1977              
REMARK   1  REFN                   ISSN 0108-7681                               
REMARK   1 REFERENCE 6                                                          
REMARK   1  AUTH   R.M.STROUD,M.KRIEGER,R.E.KOEPPEII,A.A.KOSSIAKOFF,            
REMARK   1  AUTH 2 J.L.CHAMBERS                                                 
REMARK   1  TITL   STRUCTURE-FUNCTION RELATIONSHIPS IN THE SERINE PROTEASES     
REMARK   1  EDIT   E.REICH, D.B.RIFKIN, E.SHAW                                  
REMARK   1  REF    PROTEASES AND BIOLOGICAL                13 1975              
REMARK   1  REF  2 CONTROL                                                      
REMARK   1  PUBL   COLD SPRING HARBOR LAB.,COLD SPRING HARBOR,N.Y.              
REMARK   1  REFN                                                                
REMARK   1 REFERENCE 7                                                          
REMARK   1  AUTH   J.L.CHAMBERS,G.G.CHRISTOPH,M.KRIEGER,L.KAY,R.M.STROUD        
REMARK   1  TITL   SILVER ION INHIBITION OF SERINE PROTEASES, CRYSTALLOGRAPHIC  
REMARK   1  TITL 2 STUDY OF SILVER-TRYPSIN                                      
REMARK   1  REF    BIOCHEM.BIOPHYS.RES.COMMUN.   V.  59    70 1974              
REMARK   1  REFN                   ISSN 0006-291X                               
REMARK   1 REFERENCE 8                                                          
REMARK   1  AUTH   R.M.STROUD,L.M.KAY,R.E.DICKERSON                             
REMARK   1  TITL   THE STRUCTURE OF BOVINE TRYPSIN,ELECTRON DENSITY MAPS OF THE 
REMARK   1  TITL 2 INHIBITED ENZYME AT 5 ANGSTROMS AND AT 2.7 ANGSTROMS         
REMARK   1  TITL 3 RESOLUTION                                                   
REMARK   1  REF    J.MOL.BIOL.                   V.  83   185 1974              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 9                                                          
REMARK   1  AUTH   M.KRIEGER,L.M.KAY,R.M.STROUD                                 
REMARK   1  TITL   STRUCTURE AND SPECIFIC BINDING OF TRYPSIN, COMPARISON OF     
REMARK   1  TITL 2 INHIBITED DERIVATIVES AND A MODEL FOR SUBSTRATE BINDING      
REMARK   1  REF    J.MOL.BIOL.                   V.  83   209 1974              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 10                                                         
REMARK   1  AUTH   R.M.STROUD,L.M.KAY,R.E.DICKERSON                             
REMARK   1  TITL   THE CRYSTAL AND MOLECULAR STRUCTURE OF DIP-INHIBITED BOVINE  
REMARK   1  TITL 2 TRYPSIN AT 2.7 ANGSTROMS RESOLUTION                          
REMARK   1  REF    COLD SPRING HARBOR            V.  36   125 1972              
REMARK   1  REF  2 SYMP.QUANT.BIOL.                                             
REMARK   1  REFN                   ISSN 0091-7451                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : NULL                                                 
REMARK   3   AUTHORS     : NULL                                                 
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : NULL                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
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             : NULL                           
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) : 0.187                           
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            : 1629                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 7                                       
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) : 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) : 0.013                           
REMARK   3   BOND ANGLES            (DEGREES) : 2.300                           
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 1NTP 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_1000175397.                                   
REMARK 230                                                                      
REMARK 230 EXPERIMENTAL DETAILS                                                 
REMARK 230  EXPERIMENT TYPE                : NEUTRON DIFFRACTION                
REMARK 230  DATE OF DATA COLLECTION        : NULL                               
REMARK 230  TEMPERATURE           (KELVIN) : NULL                               
REMARK 230  PH                             : NULL                               
REMARK 230  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 230                                                                      
REMARK 230  NEUTRON SOURCE                 : NULL                               
REMARK 230  BEAMLINE                       : NULL                               
REMARK 230  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 230  MONOCHROMATOR                  : NULL                               
REMARK 230  OPTICS                         : NULL                               
REMARK 230                                                                      
REMARK 230  DETECTOR TYPE                  : NULL                               
REMARK 230  DETECTOR MANUFACTURER          : NULL                               
REMARK 230  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 230  DATA SCALING SOFTWARE          : NULL                               
REMARK 230                                                                      
REMARK 230  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 230  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 230  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 230  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 230                                                                      
REMARK 230 OVERALL.                                                             
REMARK 230  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 230  DATA REDUNDANCY                : NULL                               
REMARK 230  R MERGE                    (I) : NULL                               
REMARK 230  R SYM                      (I) : NULL                               
REMARK 230  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 230                                                                      
REMARK 230 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 230  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 230  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 230  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 230  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 230  R MERGE FOR SHELL          (I) : NULL                               
REMARK 230  R SYM FOR SHELL            (I) : NULL                               
REMARK 230  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 230                                                                      
REMARK 230 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 230 SOFTWARE USED : NULL                                                 
REMARK 230 STARTING MODEL: NULL                                                 
REMARK 230                                                                      
REMARK 230 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): NULL                                      
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): NULL                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000       27.42000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       33.73500            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       29.30500            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       33.73500            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       27.42000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       29.30500            
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 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   OG   SER A   195     P    ISP A     1              1.52            
REMARK 500   DZ1  LYS A    87     OD1  ASN A   245              1.56            
REMARK 500   OE1  GLN A   221A    DZ3  LYS A   222              1.59            
REMARK 500   OD1  ASN A    25    DH22  ARG A   117              1.59            
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   DZ1  LYS A   107     DG   SER A   130     2565     1.29            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    TRP A  51   NE1   TRP A  51   CE2    -0.078                       
REMARK 500    SER A  61   CA    SER A  61   CB      0.094                       
REMARK 500    GLU A  70   CD    GLU A  70   OE1     0.091                       
REMARK 500    TRP A 237   NE1   TRP A 237   CE2    -0.093                       
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    CYS A  22   CA  -  CB  -  SG  ANGL. DEV. =   6.7 DEGREES          
REMARK 500    GLN A  50   CB  -  CA  -  C   ANGL. DEV. = -14.9 DEGREES          
REMARK 500    TYR A  59   CD1 -  CG  -  CD2 ANGL. DEV. =   9.0 DEGREES          
REMARK 500    TYR A  59   CB  -  CG  -  CD1 ANGL. DEV. =  -9.1 DEGREES          
REMARK 500    TYR A  59   CG  -  CD1 -  CE1 ANGL. DEV. =  -6.7 DEGREES          
REMARK 500    TYR A  59   CG  -  CD2 -  CE2 ANGL. DEV. =  -6.5 DEGREES          
REMARK 500    SER A  61   O   -  C   -  N   ANGL. DEV. = -10.4 DEGREES          
REMARK 500    ARG A  65A  NE  -  CZ  -  NH1 ANGL. DEV. =  -3.1 DEGREES          
REMARK 500    GLU A  80   OE1 -  CD  -  OE2 ANGL. DEV. = -13.1 DEGREES          
REMARK 500    TYR A  94   CD1 -  CG  -  CD2 ANGL. DEV. =   6.9 DEGREES          
REMARK 500    TYR A  94   CB  -  CG  -  CD1 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    ASP A 102   OD1 -  CG  -  OD2 ANGL. DEV. = -16.7 DEGREES          
REMARK 500    ASP A 102   CB  -  CG  -  OD1 ANGL. DEV. =   9.2 DEGREES          
REMARK 500    ASP A 102   CB  -  CG  -  OD2 ANGL. DEV. =   7.5 DEGREES          
REMARK 500    ARG A 117   NH1 -  CZ  -  NH2 ANGL. DEV. = -15.0 DEGREES          
REMARK 500    ARG A 117   NE  -  CZ  -  NH1 ANGL. DEV. =   4.0 DEGREES          
REMARK 500    ARG A 117   NE  -  CZ  -  NH2 ANGL. DEV. =  11.0 DEGREES          
REMARK 500    THR A 125   O   -  C   -  N   ANGL. DEV. =   9.7 DEGREES          
REMARK 500    TYR A 151   CB  -  CG  -  CD1 ANGL. DEV. =  -4.1 DEGREES          
REMARK 500    SER A 164   CA  -  C   -  N   ANGL. DEV. = -14.1 DEGREES          
REMARK 500    SER A 164   O   -  C   -  N   ANGL. DEV. =  12.3 DEGREES          
REMARK 500    ASP A 165   N   -  CA  -  CB  ANGL. DEV. = -11.5 DEGREES          
REMARK 500    ASP A 165   CA  -  CB  -  CG  ANGL. DEV. =  15.7 DEGREES          
REMARK 500    ASP A 165   OD1 -  CG  -  OD2 ANGL. DEV. = -13.4 DEGREES          
REMARK 500    ASP A 165   CB  -  CG  -  OD2 ANGL. DEV. =   9.4 DEGREES          
REMARK 500    SER A 170   N   -  CA  -  CB  ANGL. DEV. =  10.3 DEGREES          
REMARK 500    TYR A 172   CB  -  CG  -  CD2 ANGL. DEV. =  -6.3 DEGREES          
REMARK 500    TYR A 172   CD1 -  CG  -  CD2 ANGL. DEV. =   6.9 DEGREES          
REMARK 500    TYR A 172   CG  -  CD1 -  CE1 ANGL. DEV. =  -6.0 DEGREES          
REMARK 500    TYR A 172   CG  -  CD2 -  CE2 ANGL. DEV. =  -5.6 DEGREES          
REMARK 500    MET A 180   CG  -  SD  -  CE  ANGL. DEV. =   9.9 DEGREES          
REMARK 500    TYR A 184A  CD1 -  CE1 -  CZ  ANGL. DEV. =   7.8 DEGREES          
REMARK 500    GLU A 186   O   -  C   -  N   ANGL. DEV. = -11.6 DEGREES          
REMARK 500    ASP A 189   CB  -  CG  -  OD1 ANGL. DEV. =  -5.4 DEGREES          
REMARK 500    GLN A 192   CB  -  CG  -  CD  ANGL. DEV. =  19.4 DEGREES          
REMARK 500    ASP A 194   OD1 -  CG  -  OD2 ANGL. DEV. = -11.7 DEGREES          
REMARK 500    ASP A 194   CB  -  CG  -  OD1 ANGL. DEV. =   5.5 DEGREES          
REMARK 500    ASP A 194   CB  -  CG  -  OD2 ANGL. DEV. =   6.2 DEGREES          
REMARK 500    LYS A 204   O   -  C   -  N   ANGL. DEV. =   9.8 DEGREES          
REMARK 500    GLY A 211   O   -  C   -  N   ANGL. DEV. =  10.7 DEGREES          
REMARK 500    LYS A 222   N   -  CA  -  CB  ANGL. DEV. = -14.2 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    SER A  54     -158.60   -143.26                                   
REMARK 500    ASP A  71      -83.10   -122.09                                   
REMARK 500    SER A 150      114.91   -162.37                                   
REMARK 500    LYS A 222      129.33    -36.96                                   
REMARK 500    ASN A 223       -7.86     72.81                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500    TYR A  39         0.12    SIDE CHAIN                              
REMARK 500    TYR A  59         0.07    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 THE ENZYME IS INHIBITED BY A MONOISOPROPYLPHOSPHORYL                 
REMARK 600 DERIVATIVE.  THE REFINED STRUCTURE IN THIS REGION LOOKS              
REMARK 600 VERY MUCH LIKE THAT EXPECTED FOR THE TETRAHEDRAL                     
REMARK 600 INTERMEDIATE IN THE REACTION SEQUENCE.  THE NE2 OF HIS 57            
REMARK 600 IS HYDROGEN-BONDED TO O1A OF THE ISP GROUP, WHICH                    
REMARK 600 CORRESPONDS TO THE LEAVING GROUP NITROGEN OF A SPECIFIC              
REMARK 600 SUBSTRATE.                                                           
REMARK 610                                                                      
REMARK 610 MISSING HETEROATOM                                                   
REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 610 I=INSERTION CODE):                                                   
REMARK 610   M RES C SSEQI                                                      
REMARK 610     ISP A    1                                                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: CAT                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: CATALYTIC SITE: THE OG ATOM OF SER-195             
REMARK 800  NUCLEOPHILICALLY ATTACKS THE SUBSTRATE CARBONYL CARBON ATOM. ASP-   
REMARK 800  102 AND HIS-57 TOGETHER PROVIDE GENERAL BASE CATALYSIS. THE N-H     
REMARK 800  GROUPS OF GLY-193 AND SER-195 STABILIZE REACTION INTERMEDIATES      
REMARK 800  THROUGH H-BONDS TO THE SUBSTRATE CARBONYL OXYGEN ATOM.              
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BIN                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: SPECIFIC BINDING POCKET: ASP-189 AT THE BOTTOM     
REMARK 800  OF THIS POCKET FORMS AN H-BOND TO THE POSITIVELY CHARGED SIDE       
REMARK 800  CHAIN OF A SPECIFIC SUBSTRATE, GIVING TRYPSIN ITS SPECIFICITY       
REMARK 800  FOR THIS TYPE OF SIDE CHAIN. THE BACKBONE IN THE REGION FROM SER-   
REMARK 800  214 TO CYS-220 IS INVOLVED IN HYDROGEN BONDING TO A PEPTIDE         
REMARK 800  SUBSTRATE                                                           
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: ION                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: CONTAINS A TIGHTLY BOUND POSITIVE ION WHICH IS     
REMARK 800  PROBABLY A CA2+ IN THIS STRUCTURE. THE ION IS COORDINATED IN A      
REMARK 800  ROUGHLY OCTAHEDRAL FASHION BY GLU 70, ASN 72, VAL 75, GLU 80,       
REMARK 800  HOH 53 AND HOH 54. THIS REGION WAS FIRST IDENTIFIED AS THE          
REMARK 800  PRIMARY CA2+ BINDING SITE OF TRYPSIN BY BODE AND SCHWAGER,          
REMARK 800  F.E.B.S. LETT., VOL. 56, P139 (1975)                                
DBREF  1NTP A   16   245  UNP    P00760   TRY1_BOVIN      21    243             
SEQADV 1NTP ASP A   48  UNP  P00760    ASN    51 CONFLICT                       
SEQADV 1NTP ASP A   95  UNP  P00760    ASN    97 CONFLICT                       
SEQADV 1NTP ASP A  115  UNP  P00760    ASN   117 CONFLICT                       
SEQRES   1 A  223  ILE VAL GLY GLY TYR THR CYS GLY ALA ASN THR VAL PRO          
SEQRES   2 A  223  TYR GLN VAL SER LEU ASN SER GLY TYR HIS PHE CYS GLY          
SEQRES   3 A  223  GLY SER LEU ILE ASP SER GLN TRP VAL VAL SER ALA ALA          
SEQRES   4 A  223  HIS CYS TYR LYS SER GLY ILE GLN VAL ARG LEU GLY GLU          
SEQRES   5 A  223  ASP ASN ILE ASN VAL VAL GLU GLY ASN GLU GLN PHE ILE          
SEQRES   6 A  223  SER ALA SER LYS SER ILE VAL HIS PRO SER TYR ASP SER          
SEQRES   7 A  223  ASN THR LEU ASN ASN ASP ILE MET LEU ILE LYS LEU LYS          
SEQRES   8 A  223  SER ALA ALA SER LEU ASP SER ARG VAL ALA SER ILE SER          
SEQRES   9 A  223  LEU PRO THR SER CYS ALA SER ALA GLY THR GLN CYS LEU          
SEQRES  10 A  223  ILE SER GLY TRP GLY ASN THR LYS SER SER GLY THR SER          
SEQRES  11 A  223  TYR PRO ASP VAL LEU LYS CYS LEU LYS ALA PRO ILE LEU          
SEQRES  12 A  223  SER ASP SER SER CYS LYS SER ALA TYR PRO GLY GLN ILE          
SEQRES  13 A  223  THR SER ASN MET PHE CYS ALA GLY TYR LEU GLU GLY GLY          
SEQRES  14 A  223  LYS ASP SER CYS GLN GLY ASP SER GLY GLY PRO VAL VAL          
SEQRES  15 A  223  CYS SER GLY LYS LEU GLN GLY ILE VAL SER TRP GLY SER          
SEQRES  16 A  223  GLY CYS ALA GLN LYS ASN LYS PRO GLY VAL TYR THR LYS          
SEQRES  17 A  223  VAL CYS ASN TYR VAL SER TRP ILE LYS GLN THR ILE ALA          
SEQRES  18 A  223  SER ASN                                                      
HET    ISP  A   1      14                                                       
HETNAM     ISP PHOSPHORYLISOPROPANE                                             
FORMUL   2  ISP    C3 H9 O4 P                                                   
HELIX    1 SHO SER A  164  TYR A  172  1IRREGULAR AFTER CYS 168            9    
HELIX    2 310 LYS A  230  VAL A  235  5LEADS INTO TERMINAL ALPHA-HLX      6    
HELIX    3 TER TYR A  234  ASN A  245  1C-TERMINAL HELIX                  12    
SHEET    1 SH1 7 TYR A  20  TYR A  20  0                                        
SHEET    2 SH1 7 LYS A 156  PRO A 161 -1  O  CYS A 157   N  TYR A  20           
SHEET    3 SH1 7 CYS A 136  GLY A 140 -1  O  ILE A 138   N  LEU A 158           
SHEET    4 SH1 7 GLY A 197  CYS A 201 -1  N  VAL A 200   O  LEU A 137           
SHEET    5 SH1 7 LYS A 204  SER A 214 -1  N  VAL A 213   O  GLY A 197           
SHEET    6 SH1 7 GLY A 226  VAL A 231 -1  N  THR A 229   O  ILE A 212           
SHEET    7 SH1 7 ASN A 179  ALA A 183 -1  N  PHE A 181   O  TYR A 228           
SHEET    1 SH2 4 GLY A  43  SER A  45  0                                        
SHEET    2 SH2 4 VAL A  52  ALA A  55 -1  N  VAL A  53   O  SER A  45           
SHEET    3 SH2 4 ILE A 103  LYS A 107 -1  O  MET A 104   N  SER A  54           
SHEET    4 SH2 4 LYS A  87  HIS A  91 -1  N  HIS A  91   O  ILE A 103           
SHEET    1 SH3 2 ILE A  63  LEU A  66  0                                        
SHEET    2 SH3 2 GLN A  81  ALA A  85 -1  N  GLN A  81   O  LEU A  66           
SSBOND   1 CYS A   22    CYS A  157                          1555   1555  1.87  
SSBOND   2 CYS A   42    CYS A   58                          1555   1555  1.94  
SSBOND   3 CYS A  128    CYS A  232                          1555   1555  2.17  
SSBOND   4 CYS A  136    CYS A  201                          1555   1555  2.07  
SSBOND   5 CYS A  168    CYS A  182                          1555   1555  1.78  
SSBOND   6 CYS A  191    CYS A  220                          1555   1555  2.19  
SITE     1 CAT  4 HIS A  57  ASP A 102  GLY A 193  SER A 195                    
SITE     1 BIN 10 ASP A 189  SER A 190  CYS A 191  GLN A 192                    
SITE     2 BIN 10 SER A 214  TRP A 215  GLY A 216  SER A 217                    
SITE     3 BIN 10 GLY A 219  CYS A 220                                          
SITE     1 ION 11 GLU A  70  ASP A  71  ASN A  72  ILE A  73                    
SITE     2 ION 11 ASN A  74  VAL A  75  VAL A  76  GLU A  77                    
SITE     3 ION 11 GLY A  78  ASN A  79  GLU A  80                               
CRYST1   54.840   58.610   67.470  90.00  90.00  90.00 P 21 21 21    4          
ORIGX1      0.018235  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  0.017062  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  0.014821        0.00000                         
SCALE1      0.018235  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.017062  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.014821        0.00000