HEADER    HYDROLASE                               09-DEC-03   1UTK              
TITLE     TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY          
TITLE    2 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS                     
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TRYPSIN I;                                                 
COMPND   3 CHAIN: A;                                                            
COMPND   4 EC: 3.4.21.4                                                         
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: SALMO SALAR;                                    
SOURCE   3 ORGANISM_COMMON: ATLANTIC SALMON;                                    
SOURCE   4 ORGANISM_TAXID: 8030;                                                
SOURCE   5 ORGAN: PYLORIC CAECA                                                 
KEYWDS    HYDROLASE, TRYPSIN, INHIBITOR SPECIFICITY, ELECTROSTATIC              
KEYWDS   2 INTERACTIONS, COLD-ADAPTATION, MOLECULAR DYNAMICS, BINDING FREE      
KEYWDS   3 ENERGY                                                               
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    H.-K.S.LEIROS,B.O.BRANDSDAL,O.A.ANDERSEN,V.OS,I.LEIROS,R.HELLAND,     
AUTHOR   2 J.OTLEWSKI,N.P.WILLASSEN,A.O.SMALAS                                  
REVDAT   4   09-OCT-24 1UTK    1       LINK                                     
REVDAT   3   24-FEB-09 1UTK    1       VERSN                                    
REVDAT   2   15-APR-04 1UTK    1       JRNL                                     
REVDAT   1   29-JAN-04 1UTK    0                                                
JRNL        AUTH   H.-K.S.LEIROS,B.O.BRANDSDAL,O.A.ANDERSEN,V.OS,I.LEIROS,      
JRNL        AUTH 2 R.HELLAND,J.OTLEWSKI,N.P.WILLASSEN,A.O.SMALAS                
JRNL        TITL   TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY 
JRNL        TITL 2 STRUCTURES, AND ASSOCIATION CONSTANT MEASUREMENTS            
JRNL        REF    PROTEIN SCI.                  V.  13  1056 2004              
JRNL        REFN                   ISSN 0961-8368                               
JRNL        PMID   15044735                                                     
JRNL        DOI    10.1110/PS.03498604                                          
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.53 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : SHELXL-97                                            
REMARK   3   AUTHORS     : G.M.SHELDRICK                                        
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.53                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.5                           
REMARK   3   CROSS-VALIDATION METHOD           : THROUGHOUT                     
REMARK   3   FREE R VALUE TEST SET SELECTION   : RANDOM                         
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (NO CUTOFF).                         
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : 0.177                  
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : 0.177                  
REMARK   3   FREE R VALUE                  (NO CUTOFF) : 0.229                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 7.000                  
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : NULL                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : 28246                  
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F).                     
REMARK   3   R VALUE   (WORKING + TEST SET, F>4SIG(F)) : NULL                   
REMARK   3   R VALUE          (WORKING SET, F>4SIG(F)) : NULL                   
REMARK   3   FREE R VALUE                  (F>4SIG(F)) : NULL                   
REMARK   3   FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : NULL                   
REMARK   3   FREE R VALUE TEST SET COUNT   (F>4SIG(F)) : NULL                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (F>4SIG(F)) : NULL                   
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS      : 1666                                          
REMARK   3   NUCLEIC ACID ATOMS : 0                                             
REMARK   3   HETEROGEN ATOMS    : 11                                            
REMARK   3   SOLVENT ATOMS      : 180                                           
REMARK   3                                                                      
REMARK   3  MODEL REFINEMENT.                                                   
REMARK   3   OCCUPANCY SUM OF NON-HYDROGEN ATOMS      : NULL                    
REMARK   3   OCCUPANCY SUM OF HYDROGEN ATOMS          : NULL                    
REMARK   3   NUMBER OF DISCRETELY DISORDERED RESIDUES : NULL                    
REMARK   3   NUMBER OF LEAST-SQUARES PARAMETERS       : NULL                    
REMARK   3   NUMBER OF RESTRAINTS                     : NULL                    
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM RESTRAINT TARGET VALUES.                        
REMARK   3   BOND LENGTHS                         (A) : 0.009                   
REMARK   3   ANGLE DISTANCES                      (A) : 0.024                   
REMARK   3   SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL                    
REMARK   3   DISTANCES FROM RESTRAINT PLANES      (A) : NULL                    
REMARK   3   ZERO CHIRAL VOLUMES               (A**3) : NULL                    
REMARK   3   NON-ZERO CHIRAL VOLUMES           (A**3) : NULL                    
REMARK   3   ANTI-BUMPING DISTANCE RESTRAINTS     (A) : NULL                    
REMARK   3   RIGID-BOND ADP COMPONENTS         (A**2) : NULL                    
REMARK   3   SIMILAR ADP COMPONENTS            (A**2) : NULL                    
REMARK   3   APPROXIMATELY ISOTROPIC ADPS      (A**2) : NULL                    
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED: NULL                                                  
REMARK   3                                                                      
REMARK   3  STEREOCHEMISTRY TARGET VALUES : NULL                                
REMARK   3   SPECIAL CASE: NULL                                                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1UTK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 09-DEC-03.                  
REMARK 100 THE DEPOSITION ID IS D_1290014162.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 120.0                              
REMARK 200  PH                             : 6.00                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ESRF                               
REMARK 200  BEAMLINE                       : BM1A                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.873                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALA                              
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 28246                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.530                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 8.000                              
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.5                               
REMARK 200  DATA REDUNDANCY                : 5.500                              
REMARK 200  R MERGE                    (I) : 0.07500                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 2.6000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: 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   (%): 30.33                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.77                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.00                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2                        
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       35.71500            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       41.63000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       35.71500            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       41.63000            
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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A    -5                                                      
REMARK 465     ILE A    -4                                                      
REMARK 465     SER A    -3                                                      
REMARK 465     LEU A    -2                                                      
REMARK 465     VAL A    -1                                                      
REMARK 465     PHE A     1                                                      
REMARK 465     VAL A     2                                                      
REMARK 465     LEU A     3                                                      
REMARK 465     LEU A     4                                                      
REMARK 465     ILE A     5                                                      
REMARK 465     GLY A     6                                                      
REMARK 465     ALA A     7                                                      
REMARK 465     ALA A     8                                                      
REMARK 465     PHE A     9                                                      
REMARK 465     ALA A    10                                                      
REMARK 465     THR A    11                                                      
REMARK 465     GLU A    12                                                      
REMARK 465     ASP A    13                                                      
REMARK 465     ASP A    14                                                      
REMARK 465     LYS A    15                                                      
REMARK 475                                                                      
REMARK 475 ZERO OCCUPANCY RESIDUES                                              
REMARK 475 THE FOLLOWING RESIDUES WERE MODELED WITH ZERO OCCUPANCY.             
REMARK 475 THE LOCATION AND PROPERTIES OF THESE RESIDUES MAY NOT                
REMARK 475 BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;                      
REMARK 475 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE)          
REMARK 475   M RES C  SSEQI                                                     
REMARK 475     TYR A   245                                                      
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     LYS A   23   CE   NZ                                             
REMARK 480     GLU A   49   CD   OE1  OE2                                       
REMARK 480     ARG A   62   CD   NE   CZ                                        
REMARK 480     LYS A   74   NZ                                                  
REMARK 480     ARG A   87   CZ   NH2                                            
REMARK 480     ARG A   90   CZ   NH1  NH2                                       
REMARK 480     LYS A  107   NZ                                                  
REMARK 480     LYS A  110   CG   CD   CE   NZ                                   
REMARK 480     ASN A  143   ND2                                                 
REMARK 480     SER A  147   CB                                                  
REMARK 480     THR A  148   CG2                                                 
REMARK 480     GLU A  186   CG   OE2                                            
REMARK 480     LYS A  188   CE   NZ                                             
REMARK 480     GLN A  192   CG   CD   NE2                                       
REMARK 480     TYR A  217   CD2                                                 
REMARK 480     SER A  244   CA   OG                                             
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  66   NE  -  CZ  -  NH1 ANGL. DEV. =   4.3 DEGREES          
REMARK 500    ARG A  66   NE  -  CZ  -  NH2 ANGL. DEV. =  -6.9 DEGREES          
REMARK 500    ASP A 189   CB  -  CG  -  OD1 ANGL. DEV. =   7.4 DEGREES          
REMARK 500    TYR A 228   CB  -  CG  -  CD1 ANGL. DEV. =   5.8 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    GLN A  27       65.79   -119.45                                   
REMARK 500    HIS A  71      -62.60   -120.76                                   
REMARK 500    ASN A 115     -159.17   -163.72                                   
REMARK 500    SER A 214      -67.93   -122.47                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH A2044        DISTANCE =  6.06 ANGSTROMS                       
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                              CA A1248  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A  70   OE1                                                    
REMARK 620 2 ASN A  72   O    86.7                                              
REMARK 620 3 VAL A  75   O   158.6  84.9                                        
REMARK 620 4 GLU A  77   OE1  96.6  88.0 102.7                                  
REMARK 620 5 GLU A  80   OE2 107.3 165.1  83.6  85.2                            
REMARK 620 6 HOH A2049   O    77.7 104.2  85.4 166.0  84.4                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 700                                                                      
REMARK 700 SHEET                                                                
REMARK 700 DETERMINATION METHOD: DSSP                                           
REMARK 700 THE SHEETS PRESENTED AS "AB" IN EACH CHAIN ON SHEET RECORDS          
REMARK 700 BELOW IS ACTUALLY AN  6-STRANDED BARREL THIS IS REPRESENTED BY       
REMARK 700 A  7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS              
REMARK 700 ARE IDENTICAL.                                                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A1246                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A1247                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A1248                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1BIT   RELATED DB: PDB                                   
REMARK 900 TRYPSIN (ANIONIC) COMPLEXED WITH THE INHIBITOR BENZAMIDINE           
REMARK 900 RELATED ID: 1BZX   RELATED DB: PDB                                   
REMARK 900 THE CRYSTAL STRUCTURE OF ANIONIC SALMON TRYPSIN IN COMPLEX WITH      
REMARK 900 BOVINE PANCREATIC TRYPSIN INHIBITOR                                  
REMARK 900 RELATED ID: 1HJ8   RELATED DB: PDB                                   
REMARK 900 1.00 AA TRYPSIN FROM ATLANTIC SALMON                                 
REMARK 900 RELATED ID: 1UTJ   RELATED DB: PDB                                   
REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY         
REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS                     
REMARK 900 RELATED ID: 1UTL   RELATED DB: PDB                                   
REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY         
REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS                     
REMARK 900 RELATED ID: 1UTM   RELATED DB: PDB                                   
REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY         
REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS                     
REMARK 900 RELATED ID: 1UTN   RELATED DB: PDB                                   
REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY         
REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS                     
REMARK 900 RELATED ID: 1UTO   RELATED DB: PDB                                   
REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY         
REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS                     
REMARK 900 RELATED ID: 1UTP   RELATED DB: PDB                                   
REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY         
REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS                     
REMARK 900 RELATED ID: 1UTQ   RELATED DB: PDB                                   
REMARK 900 TRYPSIN SPECIFICITY AS ELUCIDATED BY LIE CALCULATIONS, X-RAY         
REMARK 900 STRUCTURES AND ASSOCIATION CONSTANT MEASUREMENTS                     
REMARK 900 RELATED ID: 2STA   RELATED DB: PDB                                   
REMARK 900 ANIONIC SALMON TRYPSIN IN COMPLEX WITH SQUASH SEED INHIBITOR         
REMARK 900 (CUCURBITA MAXIMA TRYPSIN INHIBITOR I)                               
REMARK 900 RELATED ID: 2STB   RELATED DB: PDB                                   
REMARK 900 ANIONIC SALMON TRYPSIN IN COMPLEX WITH SQUASH SEED INHIBITOR         
REMARK 900 (CUCURBITA PEPO TRYPSIN INHIBITOR II)                                
REMARK 900 RELATED ID: 2TBS   RELATED DB: PDB                                   
REMARK 900 TRYPSIN COMPLEXED WITH BENZAMIDINE INHIBITOR                         
DBREF  1UTK A   -5   245  UNP    P35031   TRY1_SALSA       1    242             
SEQADV 1UTK PRO A   24  UNP  P35031    ALA    29 CONFLICT                       
SEQADV 1UTK PRO A   28  UNP  P35031    THR    33 CONFLICT                       
SEQRES   1 A  242  MET ILE SER LEU VAL PHE VAL LEU LEU ILE GLY ALA ALA          
SEQRES   2 A  242  PHE ALA THR GLU ASP ASP LYS ILE VAL GLY GLY TYR GLU          
SEQRES   3 A  242  CYS LYS PRO TYR SER GLN PRO HIS GLN VAL SER LEU ASN          
SEQRES   4 A  242  SER GLY TYR HIS PHE CYS GLY GLY SER LEU VAL ASN GLU          
SEQRES   5 A  242  ASN TRP VAL VAL SER ALA ALA HIS CYS TYR LYS SER ARG          
SEQRES   6 A  242  VAL GLU VAL ARG LEU GLY GLU HIS ASN ILE LYS VAL THR          
SEQRES   7 A  242  GLU GLY SER GLU GLN PHE ILE SER SER SER ARG VAL ILE          
SEQRES   8 A  242  ARG HIS PRO ASN TYR SER SER TYR ASN ILE ASP ASN ASP          
SEQRES   9 A  242  ILE MET LEU ILE LYS LEU SER LYS PRO ALA THR LEU ASN          
SEQRES  10 A  242  THR TYR VAL GLN PRO VAL ALA LEU PRO THR SER CYS ALA          
SEQRES  11 A  242  PRO ALA GLY THR MET CYS THR VAL SER GLY TRP GLY ASN          
SEQRES  12 A  242  THR MET SER SER THR ALA ASP SER ASN LYS LEU GLN CYS          
SEQRES  13 A  242  LEU ASN ILE PRO ILE LEU SER TYR SER ASP CYS ASN ASN          
SEQRES  14 A  242  SER TYR PRO GLY MET ILE THR ASN ALA MET PHE CYS ALA          
SEQRES  15 A  242  GLY TYR LEU GLU GLY GLY LYS ASP SER CYS GLN GLY ASP          
SEQRES  16 A  242  SER GLY GLY PRO VAL VAL CYS ASN GLY GLU LEU GLN GLY          
SEQRES  17 A  242  VAL VAL SER TRP GLY TYR GLY CYS ALA GLU PRO GLY ASN          
SEQRES  18 A  242  PRO GLY VAL TYR ALA LYS VAL CYS ILE PHE ASN ASP TRP          
SEQRES  19 A  242  LEU THR SER THR MET ALA SER TYR                              
HET    SO4  A1246       5                                                       
HET    SO4  A1247       5                                                       
HET     CA  A1248       1                                                       
HETNAM     SO4 SULFATE ION                                                      
HETNAM      CA CALCIUM ION                                                      
FORMUL   2  SO4    2(O4 S 2-)                                                   
FORMUL   4   CA    CA 2+                                                        
FORMUL   5  HOH   *180(H2 O)                                                    
HELIX    1   1 ALA A   55  TYR A   59  5                                   5    
HELIX    2   2 SER A  164  TYR A  172  1                                   9    
HELIX    3   3 PHE A  234  ALA A  243  1                                  10    
SHEET    1  AA 7 TYR A  20  GLU A  21  0                                        
SHEET    2  AA 7 GLN A 156  PRO A 161 -1  O  CYS A 157   N  TYR A  20           
SHEET    3  AA 7 MET A 135  GLY A 140 -1  O  CYS A 136   N  ILE A 160           
SHEET    4  AA 7 PRO A 198  CYS A 201 -1  O  PRO A 198   N  SER A 139           
SHEET    5  AA 7 GLU A 204  TRP A 215 -1  O  GLU A 204   N  CYS A 201           
SHEET    6  AA 7 GLY A 226  LYS A 230 -1  O  VAL A 227   N  TRP A 215           
SHEET    7  AA 7 MET A 180  ALA A 183 -1  O  PHE A 181   N  TYR A 228           
SHEET    1  AB 7 GLN A  30  ASN A  34  0                                        
SHEET    2  AB 7 HIS A  40  ASN A  48 -1  N  PHE A  41   O  LEU A  33           
SHEET    3  AB 7 TRP A  51  SER A  54 -1  O  TRP A  51   N  VAL A  47           
SHEET    4  AB 7 MET A 104  LEU A 108 -1  O  MET A 104   N  SER A  54           
SHEET    5  AB 7 GLN A  81  ARG A  90 -1  N  SER A  86   O  LYS A 107           
SHEET    6  AB 7 GLU A  64  LEU A  67 -1  O  VAL A  65   N  ILE A  83           
SHEET    7  AB 7 GLN A  30  ASN A  34 -1  O  SER A  32   N  ARG A  66           
SSBOND   1 CYS A   22    CYS A  157                          1555   1555  2.04  
SSBOND   2 CYS A   42    CYS A   58                          1555   1555  2.02  
SSBOND   3 CYS A  128    CYS A  232                          1555   1555  2.04  
SSBOND   4 CYS A  136    CYS A  201                          1555   1555  2.00  
SSBOND   5 CYS A  168    CYS A  182                          1555   1555  2.02  
SSBOND   6 CYS A  191    CYS A  220                          1555   1555  2.04  
LINK         OE1 GLU A  70                CA    CA A1248     1555   1555  2.26  
LINK         O   ASN A  72                CA    CA A1248     1555   1555  2.34  
LINK         O   VAL A  75                CA    CA A1248     1555   1555  2.25  
LINK         OE1 GLU A  77                CA    CA A1248     1555   1555  2.42  
LINK         OE2 GLU A  80                CA    CA A1248     1555   1555  2.32  
LINK        CA    CA A1248                 O   HOH A2049     1555   1555  2.40  
SITE     1 AC1  5 HIS A  57  GLN A 192  GLY A 193  SER A 195                    
SITE     2 AC1  5 HOH A2025                                                     
SITE     1 AC2  8 ASN A  34  TYR A  39  ILE A  73  LYS A  74                    
SITE     2 AC2  8 ASN A 170  HOH A2018  HOH A2179  HOH A2180                    
SITE     1 AC3  6 GLU A  70  ASN A  72  VAL A  75  GLU A  77                    
SITE     2 AC3  6 GLU A  80  HOH A2049                                          
CRYST1   71.430   83.260   30.870  90.00  90.00  90.00 P 21 21 2     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      0.014000  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.012010  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.032394        0.00000