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Database: PDB
Entry: 2C0Y
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Original site: 2C0Y 
HEADER    HYDROLASE                               08-SEP-05   2C0Y              
TITLE     THE CRYSTAL STRUCTURE OF A CYS25ALA MUTANT OF HUMAN PROCATHEPSIN S    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROCATHEPSIN S;                                            
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: PROENZYME, RESIDUES 17-331;                                
COMPND   5 EC: 3.4.22.27;                                                       
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 ORGAN: TESTIS;                                                       
SOURCE   6 EXPRESSION_SYSTEM: TRICHOPLUSIA NI;                                  
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 7111;                                       
SOURCE   8 EXPRESSION_SYSTEM_CELL_LINE: HIGH FIVE;                              
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: BACULOVIRUS                           
KEYWDS    PROCATHEPSIN S, PROENZYME, PROTEINASE, HYDROLASE, THIOL PROTEASE,     
KEYWDS   2 PROSEGMENT BINDING LOOP, GLYCOPROTEIN, LYSOSOME, PROTEASE, ZYMOGEN   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    G.KAULMANN,G.J.PALM,K.SCHILLING,R.HILGENFELD,B.WIEDERANDERS           
REVDAT   6   13-DEC-23 2C0Y    1       REMARK                                   
REVDAT   5   24-JUL-19 2C0Y    1       REMARK                                   
REVDAT   4   29-MAY-19 2C0Y    1       REMARK                                   
REVDAT   3   03-APR-19 2C0Y    1       SOURCE                                   
REVDAT   2   24-FEB-09 2C0Y    1       VERSN                                    
REVDAT   1   08-NOV-06 2C0Y    0                                                
JRNL        AUTH   G.KAULMANN,G.J.PALM,K.SCHILLING,R.HILGENFELD,B.WIEDERANDERS  
JRNL        TITL   THE CRYSTAL STRUCTURE OF A CYS25 -> ALA MUTANT OF HUMAN      
JRNL        TITL 2 PROCATHEPSIN S ELUCIDATES ENZYME-PROSEQUENCE INTERACTIONS.   
JRNL        REF    PROTEIN SCI.                  V.  15  2619 2006              
JRNL        REFN                   ISSN 0961-8368                               
JRNL        PMID   17075137                                                     
JRNL        DOI    10.1110/PS.062401806                                         
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   M.E.MCGRATH,J.T.PALMER,D.BROMME,J.R.SOMOZA                   
REMARK   1  TITL   CRYSTAL STRUCTURE OF HUMAN CATHEPSIN S                       
REMARK   1  REF    PROTEIN SCI.                  V.   7  1294 1998              
REMARK   1  REFN                   ISSN 0961-8368                               
REMARK   1  PMID   9655332                                                      
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   J.P.TURKENBURG,M.B.LAMERS,A.M.BRZOZOWSKI,L.M.WRIGHT,         
REMARK   1  AUTH 2 R.E.HUBBARD,S.L.STURT,D.H.WILLIAMS                           
REMARK   1  TITL   STRUCTURE OF A CYS25 TO SER MUTANT OF HUMAN CATHEPSIN S      
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.D      V.  58   451 2002              
REMARK   1  REFN                   ISSN 0907-4449                               
REMARK   1  PMID   11856830                                                     
REMARK   1  DOI    10.1107/S0907444901021825                                    
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   T.A.PAULY,T.SULEA,M.AMMIRATI,J.SIVARAMAN,D.E.DANLEY,         
REMARK   1  AUTH 2 M.C.GRIFFOR,A.V.KAMATH,I.K.WANG,E.R.LAIRD,A.P.SEDDON,        
REMARK   1  AUTH 3 R.MENARD,M.CYGLER,V.L.RATH                                   
REMARK   1  TITL   SPECIFICITY DETERMINANTS OF HUMAN CATHEPSIN S REVEALED BY    
REMARK   1  TITL 2 CRYSTAL STRUCTURES OF COMPLEXES                              
REMARK   1  REF    BIOCHEMISTRY                  V.  42  3203 2003              
REMARK   1  REFN                   ISSN 0006-2960                               
REMARK   1  PMID   12641451                                                     
REMARK   1  DOI    10.1021/BI027308I                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 19.76                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 1874964.900                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 97.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 19350                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.198                           
REMARK   3   FREE R VALUE                     : 0.242                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 972                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.008                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 10                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.10                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.14                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 93.00                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 1691                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2470                       
REMARK   3   BIN FREE R VALUE                    : 0.2850                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 4.90                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 87                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.031                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2459                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 242                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 24.70                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 28.70                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.02000                                             
REMARK   3    B22 (A**2) : -0.48000                                             
REMARK   3    B33 (A**2) : 0.50000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.23                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.17                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.31                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.23                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.010                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.400                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 22.90                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.850                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 1.770 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.530 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.900 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.920 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.41                                                 
REMARK   3   BSOL        : 62.27                                                
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  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2C0Y COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 08-SEP-05.                  
REMARK 100 THE DEPOSITION ID IS D_1290025086.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 18-JUN-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 7.50                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : EMBL/DESY, HAMBURG                 
REMARK 200  BEAMLINE                       : X13                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.803                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : TRIANGULAR SI (111)                
REMARK 200                                   MONOCHROMATOR AND A CONTINUOUS     
REMARK 200                                   BENT RH-COATED MIRROR              
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 19350                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.100                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.9                               
REMARK 200  DATA REDUNDANCY                : 6.400                              
REMARK 200  R MERGE                    (I) : 0.09000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 13.4000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.10                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.14                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 88.5                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.10                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.47000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: PDB ENTRY 1BY8                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 47.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.31                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: CRYSTALLISATION WAS PERFORMED BY THE     
REMARK 280  HANGING-DROP VAPOUR DIFFUSION METHOD. EQUAL VOLUMES PROCATHEPSIN    
REMARK 280  S (CYS25ALA) AT 7.0 MG/ML AND WELL SOLUTION WERE COMBINED AND       
REMARK 280  PLACED OVER A WELL CONTAINING 0.1M TRIS/HCL, 0.2M MAGNESIUM         
REMARK 280  ACETATE AND 20% PEG 8000, PH 7.5, PH 7.50, VAPOR DIFFUSION,         
REMARK 280  HANGING DROP                                                        
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -X,Y,-Z+1/2                                             
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z                                           
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   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       39.30500            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       39.30500            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       29.93000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       70.27000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       29.93000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       70.27000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       39.30500            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       29.93000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       70.27000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       39.30500            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       29.93000            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       70.27000            
REMARK 290   SMTRY3   8  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 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A2053  LIES ON A SPECIAL POSITION.                          
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 PROTEASE RESPONSIBLE FOR THE REMOVAL OF THE INVARIANT CHAIN          
REMARK 400  FROM MHC CLASS II MOLECULES                                         
REMARK 400  ENGINEERED RESIDUE IN CHAIN A, CYS 139 TO ALA                       
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     GLN A     2                                                      
REMARK 465     LYS A    93                                                      
REMARK 465     SER A    94                                                      
REMARK 465     ASN A    95                                                      
REMARK 465     PRO A    96                                                      
REMARK 465     ASN A    97                                                      
REMARK 465     ARG A    98                                                      
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  28       -5.85     75.53                                   
REMARK 500    ASN A  63     -167.27    -78.93                                   
REMARK 500    ARG A  81       71.81   -105.75                                   
REMARK 500    THR A  91      -98.86   -123.62                                   
REMARK 500    SER A 120       40.20    -97.15                                   
REMARK 500    THR A 157     -135.45   -105.35                                   
REMARK 500    ARG A 240       53.01    -66.52                                   
REMARK 500    ASN A 262       -1.21   -150.00                                   
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 A2075        DISTANCE =  6.76 ANGSTROMS                       
REMARK 700                                                                      
REMARK 700 SHEET                                                                
REMARK 700 THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN               
REMARK 700 ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW,          
REMARK 700 TWO SHEETS ARE DEFINED.                                              
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1BXF   RELATED DB: PDB                                   
REMARK 900 THREE-DIMENSIONAL STRUCTURES OF THE CYSTEINE- PROTEASES CATHEPSINS   
REMARK 900 K AND S DEDUCED BY KNOWLEDGE-BASED MODELLING AND ACTIVE-SITE         
REMARK 900 CHARACTERISTICS                                                      
REMARK 900 RELATED ID: 1GLO   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF CYS25SER MUTANT OF HUMAN CATHEPSIN S            
REMARK 900 RELATED ID: 1MS6   RELATED DB: PDB                                   
REMARK 900 DIPEPTIDE NITRILE INHIBITOR BOUND TO CATHEPSIN S.                    
REMARK 900 RELATED ID: 1NPZ   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURES OF CATHEPSIN S INHIBITOR COMPLEXES                
REMARK 900 RELATED ID: 1NQC   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURES OF CATHEPSIN S INHIBITOR COMPLEXES                
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 CLONED WITHOUT SIGNAL PEPTIDE                                        
DBREF  2C0Y A    2   316  UNP    P25774   CATS_HUMAN      17    331             
SEQADV 2C0Y ALA A  124  UNP  P25774    CYS   139 ENGINEERED MUTATION            
SEQADV 2C0Y SER A  146  UNP  P25774    THR   161 VARIANT                        
SEQRES   1 A  315  GLN LEU HIS LYS ASP PRO THR LEU ASP HIS HIS TRP HIS          
SEQRES   2 A  315  LEU TRP LYS LYS THR TYR GLY LYS GLN TYR LYS GLU LYS          
SEQRES   3 A  315  ASN GLU GLU ALA VAL ARG ARG LEU ILE TRP GLU LYS ASN          
SEQRES   4 A  315  LEU LYS PHE VAL MET LEU HIS ASN LEU GLU HIS SER MET          
SEQRES   5 A  315  GLY MET HIS SER TYR ASP LEU GLY MET ASN HIS LEU GLY          
SEQRES   6 A  315  ASP MET THR SER GLU GLU VAL MET SER LEU MET SER SER          
SEQRES   7 A  315  LEU ARG VAL PRO SER GLN TRP GLN ARG ASN ILE THR TYR          
SEQRES   8 A  315  LYS SER ASN PRO ASN ARG ILE LEU PRO ASP SER VAL ASP          
SEQRES   9 A  315  TRP ARG GLU LYS GLY CYS VAL THR GLU VAL LYS TYR GLN          
SEQRES  10 A  315  GLY SER CYS GLY ALA ALA TRP ALA PHE SER ALA VAL GLY          
SEQRES  11 A  315  ALA LEU GLU ALA GLN LEU LYS LEU LYS THR GLY LYS LEU          
SEQRES  12 A  315  VAL SER LEU SER ALA GLN ASN LEU VAL ASP CYS SER THR          
SEQRES  13 A  315  GLU LYS TYR GLY ASN LYS GLY CYS ASN GLY GLY PHE MET          
SEQRES  14 A  315  THR THR ALA PHE GLN TYR ILE ILE ASP ASN LYS GLY ILE          
SEQRES  15 A  315  ASP SER ASP ALA SER TYR PRO TYR LYS ALA MET ASP GLN          
SEQRES  16 A  315  LYS CYS GLN TYR ASP SER LYS TYR ARG ALA ALA THR CYS          
SEQRES  17 A  315  SER LYS TYR THR GLU LEU PRO TYR GLY ARG GLU ASP VAL          
SEQRES  18 A  315  LEU LYS GLU ALA VAL ALA ASN LYS GLY PRO VAL SER VAL          
SEQRES  19 A  315  GLY VAL ASP ALA ARG HIS PRO SER PHE PHE LEU TYR ARG          
SEQRES  20 A  315  SER GLY VAL TYR TYR GLU PRO SER CYS THR GLN ASN VAL          
SEQRES  21 A  315  ASN HIS GLY VAL LEU VAL VAL GLY TYR GLY ASP LEU ASN          
SEQRES  22 A  315  GLY LYS GLU TYR TRP LEU VAL LYS ASN SER TRP GLY HIS          
SEQRES  23 A  315  ASN PHE GLY GLU GLU GLY TYR ILE ARG MET ALA ARG ASN          
SEQRES  24 A  315  LYS GLY ASN HIS CYS GLY ILE ALA SER PHE PRO SER TYR          
SEQRES  25 A  315  PRO GLU ILE                                                  
FORMUL   2  HOH   *242(H2 O)                                                    
HELIX    1   1 ASP A    6  THR A    8  5                                   3    
HELIX    2   2 LEU A    9  GLY A   21  1                                  13    
HELIX    3   3 ASN A   28  MET A   53  1                                  26    
HELIX    4   4 ASN A   63  MET A   68  5                                   6    
HELIX    5   5 THR A   69  MET A   77  1                                   9    
HELIX    6   6 SER A   84  ARG A   88  5                                   5    
HELIX    7   7 ALA A  123  GLY A  142  1                                  20    
HELIX    8   8 SER A  148  SER A  156  1                                   9    
HELIX    9   9 THR A  157  GLY A  161  5                                   5    
HELIX   10  10 LYS A  163  GLY A  167  5                                   5    
HELIX   11  11 PHE A  169  LYS A  181  1                                  13    
HELIX   12  12 ASP A  201  LYS A  203  5                                   3    
HELIX   13  13 ARG A  219  LYS A  230  1                                  12    
HELIX   14  14 HIS A  241  LEU A  246  1                                   6    
HELIX   15  15 ASN A  303  ILE A  307  5                                   5    
SHEET    1  AA 6 TYR A  58  LEU A  60  0                                        
SHEET    2  AA 6 TYR A 247  TYR A 252 -1  N  ARG A 248   O  ASP A  59           
SHEET    3  AA 6 TYR A 294  ALA A 298  1  O  ARG A 296   N  TYR A 252           
SHEET    4  AA 6 LYS A 276  LYS A 282 -1  O  TRP A 279   N  MET A 297           
SHEET    5  AA 6 HIS A 263  LEU A 273 -1  O  LEU A 266   N  LYS A 282           
SHEET    6  AA 6 VAL A 104  ASP A 105 -1  O  VAL A 104   N  TYR A 270           
SHEET    1  AB 6 TYR A  58  LEU A  60  0                                        
SHEET    2  AB 6 TYR A 247  TYR A 252 -1  N  ARG A 248   O  ASP A  59           
SHEET    3  AB 6 TYR A 294  ALA A 298  1  O  ARG A 296   N  TYR A 252           
SHEET    4  AB 6 LYS A 276  LYS A 282 -1  O  TRP A 279   N  MET A 297           
SHEET    5  AB 6 HIS A 263  LEU A 273 -1  O  LEU A 266   N  LYS A 282           
SHEET    6  AB 6 VAL A 233  VAL A 237 -1  O  VAL A 233   N  VAL A 267           
SHEET    1  AC 2 ILE A 183  ASP A 184  0                                        
SHEET    2  AC 2 ARG A 205  ALA A 207 -1  N  ALA A 206   O  ILE A 183           
SHEET    1  AD 2 LYS A 211  GLU A 214  0                                        
SHEET    2  AD 2 SER A 312  GLU A 315 -1  O  TYR A 313   N  THR A 213           
SSBOND   1 CYS A  121    CYS A  165                          1555   1555  2.04  
SSBOND   2 CYS A  155    CYS A  198                          1555   1555  2.04  
SSBOND   3 CYS A  257    CYS A  305                          1555   1555  2.04  
CRYST1   59.860  140.540   78.610  90.00  90.00  90.00 C 2 2 21      8          
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      0.016706  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.007115  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012721        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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