HEADER    HYDROLASE/HYDROLASE INHIBITOR           03-OCT-92   1PIP              
TITLE     CRYSTAL STRUCTURE OF PAPAIN-SUCCINYL-GLN-VAL-VAL-ALA-ALA-P-           
TITLE    2 NITROANILIDE COMPLEX AT 1.7 ANGSTROMS RESOLUTION: NONCOVALENT BINDING
TITLE    3 MODE OF A COMMON SEQUENCE OF ENDOGENOUS THIOL PROTEASE INHIBITORS    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PAPAIN;                                                    
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: PAPAYA PROTEINASE I,PPI;                                    
COMPND   5 EC: 3.4.22.2;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MOL_ID: 2;                                                           
COMPND   8 MOLECULE: SUCCINYL-GLN-VAL-VAL-ALA-ALA-P-NITROANILIDE;               
COMPND   9 CHAIN: B;                                                            
COMPND  10 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: CARICA PAPAYA;                                  
SOURCE   3 ORGANISM_COMMON: PAPAYA;                                             
SOURCE   4 ORGANISM_TAXID: 3649;                                                
SOURCE   5 MOL_ID: 2;                                                           
SOURCE   6 SYNTHETIC: YES                                                       
KEYWDS    THIOL PROTEASE, HYDROLASE-HYDROLASE INHIBITOR COMPLEX                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.YAMAMOTO,K.TOMOO,M.DOI,H.OHISHI,M.INOUE,T.ISHIDA,D.YAMAMOTO,        
AUTHOR   2 S.TSUBOI,H.OKAMOTO,Y.OKADA                                           
REVDAT   7   13-NOV-24 1PIP    1       REMARK                                   
REVDAT   6   24-APR-24 1PIP    1       COMPND SOURCE REMARK DBREF               
REVDAT   6 2                   1       SEQADV SEQRES HET    HETNAM              
REVDAT   6 3                   1       HETSYN FORMUL LINK   ATOM                
REVDAT   5   29-NOV-17 1PIP    1       HELIX                                    
REVDAT   4   13-JUL-11 1PIP    1       VERSN                                    
REVDAT   3   24-FEB-09 1PIP    1       VERSN                                    
REVDAT   2   01-APR-03 1PIP    1       JRNL                                     
REVDAT   1   31-OCT-93 1PIP    0                                                
JRNL        AUTH   A.YAMAMOTO,K.TOMOO,M.DOI,H.OHISHI,M.INOUE,T.ISHIDA,          
JRNL        AUTH 2 D.YAMAMOTO,S.TSUBOI,H.OKAMOTO,Y.OKADA                        
JRNL        TITL   CRYSTAL STRUCTURE OF                                         
JRNL        TITL 2 PAPAIN-SUCCINYL-GLN-VAL-VAL-ALA-ALA-P-NITROANILIDE COMPLEX   
JRNL        TITL 3 AT 1.7-A RESOLUTION: NONCOVALENT BINDING MODE OF A COMMON    
JRNL        TITL 4 SEQUENCE OF ENDOGENOUS THIOL PROTEASE INHIBITORS.            
JRNL        REF    BIOCHEMISTRY                  V.  31 11305 1992              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   1445868                                                      
JRNL        DOI    10.1021/BI00161A007                                          
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.70 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 3.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 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) : 0.196                           
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            : 1705                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 0                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1PIP 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_1000175702.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 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: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 45.72                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.27                     
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       21.54500            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       24.84500            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       51.15000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       24.84500            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       21.54500            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       51.15000            
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: DIMERIC                           
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 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   CG   GLN A    73     O4   ZKO B   400     2765     1.26            
REMARK 500   CG   GLN A    73     C8   ZKO B   400     2765     2.06            
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    HIS A  81   NE2   HIS A  81   CD2    -0.071                       
REMARK 500    HIS A 159   NE2   HIS A 159   CD2    -0.072                       
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    TRP A   7   CD1 -  CG  -  CD2 ANGL. DEV. =   6.0 DEGREES          
REMARK 500    TRP A   7   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    ARG A   8   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500    TRP A  26   CD1 -  CG  -  CD2 ANGL. DEV. =   4.8 DEGREES          
REMARK 500    CYS A  63   O   -  C   -  N   ANGL. DEV. =  -9.6 DEGREES          
REMARK 500    ASN A  64   CA  -  CB  -  CG  ANGL. DEV. =  14.7 DEGREES          
REMARK 500    TRP A  69   CD1 -  CG  -  CD2 ANGL. DEV. =   6.7 DEGREES          
REMARK 500    TRP A  69   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    TYR A  94   CA  -  CB  -  CG  ANGL. DEV. =  12.7 DEGREES          
REMARK 500    ARG A  98   NE  -  CZ  -  NH1 ANGL. DEV. =   4.5 DEGREES          
REMARK 500    ARG A  98   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.4 DEGREES          
REMARK 500    ARG A 111   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.7 DEGREES          
REMARK 500    TYR A 116   CB  -  CG  -  CD2 ANGL. DEV. =  -4.2 DEGREES          
REMARK 500    VAL A 132   N   -  CA  -  CB  ANGL. DEV. = -13.4 DEGREES          
REMARK 500    ARG A 145   NE  -  CZ  -  NH1 ANGL. DEV. =   3.4 DEGREES          
REMARK 500    VAL A 161   CG1 -  CB  -  CG2 ANGL. DEV. =  10.1 DEGREES          
REMARK 500    TRP A 177   CD1 -  CG  -  CD2 ANGL. DEV. =   5.3 DEGREES          
REMARK 500    TRP A 177   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.0 DEGREES          
REMARK 500    TRP A 177   CA  -  C   -  N   ANGL. DEV. =  13.6 DEGREES          
REMARK 500    TRP A 177   O   -  C   -  N   ANGL. DEV. = -11.4 DEGREES          
REMARK 500    TRP A 181   CD1 -  CG  -  CD2 ANGL. DEV. =   5.5 DEGREES          
REMARK 500    VAL B 401   CA  -  CB  -  CG2 ANGL. DEV. = -12.3 DEGREES          
REMARK 500    ALA B 403   N   -  CA  -  C   ANGL. DEV. =  17.3 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    ASN A  64       21.04     49.93                                   
REMARK 500    TYR A  78      -73.69   -121.02                                   
REMARK 500    TRP A 177     -160.91   -105.00                                   
REMARK 500    VAL B 401      126.32    108.56                                   
REMARK 500    ALA B 403       69.26    -33.78                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN B OF SUCCINYL-GLN-VAL-VAL   
REMARK 800  -ALA-ALA-P-NITROANILIDE                                             
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 SEQUENCE ADVISORY NOTICE: DIFFERENCE BETWEEN SWISS-PROT              
REMARK 999 AND PDB SEQUENCE.                                                    
REMARK 999                                                                      
REMARK 999      SWISS-PROT ENTRY NAME: PAPA_CARPA                               
REMARK 999                                                                      
REMARK 999      SWISS-PROT RESIDUE      PDB SEQRES                              
REMARK 999        NAME   NUMBER         NAME  CHAIN  SEQ/INSERT CODE            
REMARK 999        GLU    47             GLN     A     47                        
REMARK 999        GLU   118             GLN     A    118                        
REMARK 999        GLU   135             GLN     A    135                        
DBREF  1PIP A    1   212  UNP    P00784   PAPA1_CARPA    134    345             
DBREF  1PIP B  400   219  PDB    1PIP     1PIP           400    219             
SEQADV 1PIP GLN A   47  UNP  P00784    GLU   180 CONFLICT                       
SEQADV 1PIP GLN A  118  UNP  P00784    GLU   251 CONFLICT                       
SEQADV 1PIP GLN A  135  UNP  P00784    GLU   268 CONFLICT                       
SEQRES   1 A  212  ILE PRO GLU TYR VAL ASP TRP ARG GLN LYS GLY ALA VAL          
SEQRES   2 A  212  THR PRO VAL LYS ASN GLN GLY SER CYS GLY SER CYS TRP          
SEQRES   3 A  212  ALA PHE SER ALA VAL VAL THR ILE GLU GLY ILE ILE LYS          
SEQRES   4 A  212  ILE ARG THR GLY ASN LEU ASN GLN TYR SER GLU GLN GLU          
SEQRES   5 A  212  LEU LEU ASP CYS ASP ARG ARG SER TYR GLY CYS ASN GLY          
SEQRES   6 A  212  GLY TYR PRO TRP SER ALA LEU GLN LEU VAL ALA GLN TYR          
SEQRES   7 A  212  GLY ILE HIS TYR ARG ASN THR TYR PRO TYR GLU GLY VAL          
SEQRES   8 A  212  GLN ARG TYR CYS ARG SER ARG GLU LYS GLY PRO TYR ALA          
SEQRES   9 A  212  ALA LYS THR ASP GLY VAL ARG GLN VAL GLN PRO TYR ASN          
SEQRES  10 A  212  GLN GLY ALA LEU LEU TYR SER ILE ALA ASN GLN PRO VAL          
SEQRES  11 A  212  SER VAL VAL LEU GLN ALA ALA GLY LYS ASP PHE GLN LEU          
SEQRES  12 A  212  TYR ARG GLY GLY ILE PHE VAL GLY PRO CYS GLY ASN LYS          
SEQRES  13 A  212  VAL ASP HIS ALA VAL ALA ALA VAL GLY TYR GLY PRO ASN          
SEQRES  14 A  212  TYR ILE LEU ILE LYS ASN SER TRP GLY THR GLY TRP GLY          
SEQRES  15 A  212  GLU ASN GLY TYR ILE ARG ILE LYS ARG GLY THR GLY ASN          
SEQRES  16 A  212  SER TYR GLY VAL CYS GLY LEU TYR THR SER SER PHE TYR          
SEQRES  17 A  212  PRO VAL LYS ASN                                              
SEQRES   1 B    6  ZKO VAL VAL ALA ALA NIT                                      
HET    ZKO  B 400      16                                                       
HET    NIT  B 219      10                                                       
HETNAM     ZKO N-SUCCINYL-GLUTAMINE                                             
HETNAM     NIT 4-NITROANILINE                                                   
HETSYN     ZKO 5-AZANYL-5-OXIDANYLIDENE-2-[(4-OXIDANYL-4-                       
HETSYN   2 ZKO  OXIDANYLIDENE-BUTANOYL)AMINO]PENTANOIC ACID                     
HETSYN     NIT PARANITROANILINE                                                 
FORMUL   2  ZKO    C9 H14 N2 O6                                                 
FORMUL   2  NIT    C6 H6 N2 O2                                                  
HELIX    1  L1 SER A   24  THR A   42  1INCLUDING 3/10 REGION             19    
HELIX    2  L2 GLU A   50  ASP A   57  1                                   8    
HELIX    3  L3 TYR A   67  TYR A   78  1INCLUDING 3/10 REGION             12    
HELIX    4  R1 ASN A  117  ASN A  127  1INCLUDING 3/10 REGION             11    
HELIX    5  R2 GLY A  138  GLN A  142  1INCLUDING 3/10 REGION              5    
SHEET    1  S1 7 VAL A   5  TRP A   7  0                                        
SHEET    2  S1 7 ASP A 158  GLY A 167 -1  N  TYR A 166   O  VAL A   5           
SHEET    3  S1 7 VAL A 130  LEU A 134 -1  N  LEU A 134   O  HIS A 159           
SHEET    4  S1 7 SER A 206  VAL A 210 -1  N  PHE A 207   O  SER A 131           
SHEET    5  S1 7 ASP A 108  VAL A 113 -1  N  VAL A 113   O  SER A 206           
SHEET    6  S1 7 TYR A 170  ASN A 175 -1  N  LEU A 172   O  GLY A 109           
SHEET    7  S1 7 GLY A 185  ARG A 191 -1  N  ILE A 189   O  ILE A 171           
SSBOND   1 CYS A   22    CYS A   63                          1555   1555  2.02  
SSBOND   2 CYS A   56    CYS A   95                          1555   1555  2.04  
SSBOND   3 CYS A  153    CYS A  200                          1555   1555  2.02  
LINK         N1  NIT B 219                 C   ALA B 404     1555   1555  1.42  
LINK         C   ZKO B 400                 N   VAL B 401     1555   1555  1.35  
CISPEP   1 GLY A  151    PRO A  152          0        -2.12                     
SITE     1 AC1  8 GLN A  73  VAL A 110  ALA A 136  ALA A 137                    
SITE     2 AC1  8 GLN A 142  LYS A 156  ASP A 158  TRP A 177                    
CRYST1   43.090  102.300   49.690  90.00  90.00  90.00 P 21 21 21    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      0.023207  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.009775  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.020125        0.00000