HEADER    TOXIN                                   24-NOV-98   1B1Z              
TITLE     STREPTOCOCCAL PYROGENIC EXOTOXIN A1                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PROTEIN (TOXIN);                                           
COMPND   3 CHAIN: A, B, C, D;                                                   
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: STREPTOCOCCUS PYOGENES;                         
SOURCE   3 ORGANISM_TAXID: 1314;                                                
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   6 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3);                                
SOURCE   7 EXPRESSION_SYSTEM_VECTOR: PET15B                                     
KEYWDS    SUPERANTIGEN, ZINC BINDING, PYROGENIC EXOTOXIN, TOXIN                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.C.PAPAGEORGIOU,K.R.ACHARYA                                          
REVDAT   6   20-NOV-24 1B1Z    1       REMARK                                   
REVDAT   5   03-APR-24 1B1Z    1       REMARK                                   
REVDAT   4   27-DEC-23 1B1Z    1       REMARK                                   
REVDAT   3   24-FEB-09 1B1Z    1       VERSN                                    
REVDAT   2   01-APR-03 1B1Z    1       JRNL                                     
REVDAT   1   24-NOV-99 1B1Z    0                                                
JRNL        AUTH   A.C.PAPAGEORGIOU,C.M.COLLINS,D.M.GUTMAN,J.B.KLINE,           
JRNL        AUTH 2 S.M.O'BRIEN,H.S.TRANTER,K.R.ACHARYA                          
JRNL        TITL   STRUCTURAL BASIS FOR THE RECOGNITION OF SUPERANTIGEN         
JRNL        TITL 2 STREPTOCOCCAL PYROGENIC EXOTOXIN A (SPEA1) BY MHC CLASS II   
JRNL        TITL 3 MOLECULES AND T-CELL RECEPTORS.                              
JRNL        REF    EMBO J.                       V.  18     9 1999              
JRNL        REFN                   ISSN 0261-4189                               
JRNL        PMID   9878045                                                      
JRNL        DOI    10.1093/EMBOJ/18.1.9                                         
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.57 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.851                                         
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.57                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 97.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 33531                          
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) : 0.194                           
REMARK   3   FREE R VALUE                     : 0.274                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
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            : 7027                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 87                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 41.40                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 31.05                          
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) : 0.26                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.007                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.320                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 28.30                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.650                           
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 1B1Z COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-DEC-98.                  
REMARK 100 THE DEPOSITION ID IS D_1000000159.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-NOV-97                          
REMARK 200  TEMPERATURE           (KELVIN) : 290.0                              
REMARK 200  PH                             : 6.5                                
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                       : BW7B                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.8373                             
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          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 33531                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.570                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 97.4                               
REMARK 200  DATA REDUNDANCY                : 6.900                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.10700                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 8.6000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.57                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.70                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 84.5                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.42800                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.200                              
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: POLYALANINE MODEL OF SEC2                            
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 52.19                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.57                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8K 17%, AMMONIUM SULPHATE 0.2 M,     
REMARK 280  PH 6.5                                                              
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       63.70000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       50.50000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       63.70000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       50.50000            
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: TETRAMERIC                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D                            
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     LYS A   221                                                      
REMARK 465     LYS B   221                                                      
REMARK 465     LYS C   221                                                      
REMARK 465     LYS D   221                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     ASP A   5    CG   OD1  OD2                                       
REMARK 470     TYR A  88    CG   CD1  CD2  CE1  CE2  CZ   OH                    
REMARK 470     GLU A 107    CG   CD   OE1  OE2                                  
REMARK 470     GLU A 112    CG   CD   OE1  OE2                                  
REMARK 470     LYS A 115    CG   CD   CE   NZ                                   
REMARK 470     LYS A 179    CG   CD   CE   NZ                                   
REMARK 470     GLU A 180    CG   CD   OE1  OE2                                  
REMARK 470     ASP B   5    CG   OD1  OD2                                       
REMARK 470     TYR B  88    CG   CD1  CD2  CE1  CE2  CZ   OH                    
REMARK 470     GLU B  91    CG   CD   OE1  OE2                                  
REMARK 470     ASN B  92    CG   OD1  ND2                                       
REMARK 470     GLU B 107    CG   CD   OE1  OE2                                  
REMARK 470     GLU B 112    CG   CD   OE1  OE2                                  
REMARK 470     LYS B 115    CG   CD   CE   NZ                                   
REMARK 470     LYS B 179    CG   CD   CE   NZ                                   
REMARK 470     GLU B 180    CG   CD   OE1  OE2                                  
REMARK 470     ASP C   5    CG   OD1  OD2                                       
REMARK 470     TYR C  88    CG   CD1  CD2  CE1  CE2  CZ   OH                    
REMARK 470     GLU C  91    CG   CD   OE1  OE2                                  
REMARK 470     ASN C  92    CG   OD1  ND2                                       
REMARK 470     GLU C 107    CG   CD   OE1  OE2                                  
REMARK 470     GLU C 112    CG   CD   OE1  OE2                                  
REMARK 470     LYS C 115    CG   CD   CE   NZ                                   
REMARK 470     LYS C 179    CG   CD   CE   NZ                                   
REMARK 470     GLU C 180    CG   CD   OE1  OE2                                  
REMARK 470     ASP D   5    CG   OD1  OD2                                       
REMARK 470     TYR D  88    CG   CD1  CD2  CE1  CE2  CZ   OH                    
REMARK 470     GLU D  91    CG   CD   OE1  OE2                                  
REMARK 470     ASN D  92    CG   OD1  ND2                                       
REMARK 470     GLU D 107    CG   CD   OE1  OE2                                  
REMARK 470     GLU D 112    CG   CD   OE1  OE2                                  
REMARK 470     LYS D 115    CG   CD   CE   NZ                                   
REMARK 470     LYS D 179    CG   CD   CE   NZ                                   
REMARK 470     GLU D 180    CG   CD   OE1  OE2                                  
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   OD1  ASP A   203     O    HOH A   230              2.19            
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    LEU A 207   CA    LEU A 207   CB     -0.164                       
REMARK 500    LEU C 207   CA    LEU C 207   CB      0.238                       
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    LEU B 207   CA  -  CB  -  CG  ANGL. DEV. =  22.6 DEGREES          
REMARK 500    LEU C 207   CB  -  CA  -  C   ANGL. DEV. = -26.7 DEGREES          
REMARK 500    LEU C 207   CA  -  CB  -  CG  ANGL. DEV. = -19.8 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    ASP A  39     -160.70   -170.72                                   
REMARK 500    GLN A  40      137.85   -176.11                                   
REMARK 500    LEU A  41      -64.72    -94.60                                   
REMARK 500    ASN A  54       -4.67     92.05                                   
REMARK 500    LYS A  72      -80.09    -43.52                                   
REMARK 500    LEU A  86       27.61     80.27                                   
REMARK 500    CYS A  90       30.86   -172.85                                   
REMARK 500    GLU A  91      -28.71     73.79                                   
REMARK 500    ALA A  93       74.58   -106.27                                   
REMARK 500    LYS A 177      -99.97    -47.58                                   
REMARK 500    ASN A 178       44.97    -88.71                                   
REMARK 500    PRO B   6      -37.20    -22.93                                   
REMARK 500    GLN B  40      134.99   -172.67                                   
REMARK 500    LEU B  41      -62.92    -97.13                                   
REMARK 500    ASN B  54       -6.79     82.43                                   
REMARK 500    CYS B  87       46.20    -89.84                                   
REMARK 500    LEU B  89      -89.94   -110.09                                   
REMARK 500    ASN B  92       32.78   -164.80                                   
REMARK 500    LYS B 177      -86.60    -58.16                                   
REMARK 500    LYS B 179      154.90    167.46                                   
REMARK 500    LEU B 198        7.15    -69.45                                   
REMARK 500    ASN C  17       49.40     79.02                                   
REMARK 500    LEU C  41      -62.48   -105.50                                   
REMARK 500    ASN C  54        1.56     89.39                                   
REMARK 500    CYS C  90       28.50   -158.76                                   
REMARK 500    GLU C  91      -11.29     59.83                                   
REMARK 500    PRO D   6       81.41    -44.79                                   
REMARK 500    SER D   7      -48.20    178.16                                   
REMARK 500    ASN D  17       40.66     75.94                                   
REMARK 500    PRO D  53       43.88    -75.89                                   
REMARK 500    ASN D  54      -12.35   -179.02                                   
REMARK 500    LYS D  63      -73.58    -50.78                                   
REMARK 500    CYS D  90      156.42    170.96                                   
REMARK 500    ASN D  92       62.37   -102.37                                   
REMARK 500    ALA D  93       56.10   -178.85                                   
REMARK 500    ASN D 109       17.91   -176.49                                   
REMARK 500    LYS D 116      143.59    -26.91                                   
REMARK 500    SER D 122       84.27   -158.58                                   
REMARK 500    GLN D 127       84.02    -52.10                                   
REMARK 500    SER D 128     -104.11    -78.17                                   
REMARK 500    SER D 130      116.71   -172.42                                   
REMARK 500    ASN D 136       49.67   -107.58                                   
REMARK 500    ASN D 162       11.78    -63.96                                   
REMARK 500    LYS D 177      -81.44    -49.80                                   
REMARK 500    ASN D 178       77.13   -107.51                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1B1Z A    3   221  UNP    P62560   SPEA_STRPY      33    251             
DBREF  1B1Z B    3   221  UNP    P62560   SPEA_STRPY      33    251             
DBREF  1B1Z C    3   221  UNP    P62560   SPEA_STRPY      33    251             
DBREF  1B1Z D    3   221  UNP    P62560   SPEA_STRPY      33    251             
SEQRES   1 A  219  ASP PRO ASP PRO SER GLN LEU HIS ARG SER SER LEU VAL          
SEQRES   2 A  219  LYS ASN LEU GLN ASN ILE TYR PHE LEU TYR GLU GLY ASP          
SEQRES   3 A  219  PRO VAL THR HIS GLU ASN VAL LYS SER VAL ASP GLN LEU          
SEQRES   4 A  219  LEU SER HIS ASP LEU ILE TYR ASN VAL SER GLY PRO ASN          
SEQRES   5 A  219  TYR ASP LYS LEU LYS THR GLU LEU LYS ASN GLN GLU MET          
SEQRES   6 A  219  ALA THR LEU PHE LYS ASP LYS ASN VAL ASP ILE TYR GLY          
SEQRES   7 A  219  VAL GLU TYR TYR HIS LEU CYS TYR LEU CYS GLU ASN ALA          
SEQRES   8 A  219  GLU ARG SER ALA CYS ILE TYR GLY GLY VAL THR ASN HIS          
SEQRES   9 A  219  GLU GLY ASN HIS LEU GLU ILE PRO LYS LYS ILE VAL VAL          
SEQRES  10 A  219  LYS VAL SER ILE ASP GLY ILE GLN SER LEU SER PHE ASP          
SEQRES  11 A  219  ILE GLU THR ASN LYS LYS MET VAL THR ALA GLN GLU LEU          
SEQRES  12 A  219  ASP TYR LYS VAL ARG LYS TYR LEU THR ASP ASN LYS GLN          
SEQRES  13 A  219  LEU TYR THR ASN GLY PRO SER LYS TYR GLU THR GLY TYR          
SEQRES  14 A  219  ILE LYS PHE ILE PRO LYS ASN LYS GLU SER PHE TRP PHE          
SEQRES  15 A  219  ASP PHE PHE PRO GLU PRO GLU PHE THR GLN SER LYS TYR          
SEQRES  16 A  219  LEU MET ILE TYR LYS ASP ASN GLU THR LEU ASP SER ASN          
SEQRES  17 A  219  THR SER GLN ILE GLU VAL TYR LEU THR THR LYS                  
SEQRES   1 B  219  ASP PRO ASP PRO SER GLN LEU HIS ARG SER SER LEU VAL          
SEQRES   2 B  219  LYS ASN LEU GLN ASN ILE TYR PHE LEU TYR GLU GLY ASP          
SEQRES   3 B  219  PRO VAL THR HIS GLU ASN VAL LYS SER VAL ASP GLN LEU          
SEQRES   4 B  219  LEU SER HIS ASP LEU ILE TYR ASN VAL SER GLY PRO ASN          
SEQRES   5 B  219  TYR ASP LYS LEU LYS THR GLU LEU LYS ASN GLN GLU MET          
SEQRES   6 B  219  ALA THR LEU PHE LYS ASP LYS ASN VAL ASP ILE TYR GLY          
SEQRES   7 B  219  VAL GLU TYR TYR HIS LEU CYS TYR LEU CYS GLU ASN ALA          
SEQRES   8 B  219  GLU ARG SER ALA CYS ILE TYR GLY GLY VAL THR ASN HIS          
SEQRES   9 B  219  GLU GLY ASN HIS LEU GLU ILE PRO LYS LYS ILE VAL VAL          
SEQRES  10 B  219  LYS VAL SER ILE ASP GLY ILE GLN SER LEU SER PHE ASP          
SEQRES  11 B  219  ILE GLU THR ASN LYS LYS MET VAL THR ALA GLN GLU LEU          
SEQRES  12 B  219  ASP TYR LYS VAL ARG LYS TYR LEU THR ASP ASN LYS GLN          
SEQRES  13 B  219  LEU TYR THR ASN GLY PRO SER LYS TYR GLU THR GLY TYR          
SEQRES  14 B  219  ILE LYS PHE ILE PRO LYS ASN LYS GLU SER PHE TRP PHE          
SEQRES  15 B  219  ASP PHE PHE PRO GLU PRO GLU PHE THR GLN SER LYS TYR          
SEQRES  16 B  219  LEU MET ILE TYR LYS ASP ASN GLU THR LEU ASP SER ASN          
SEQRES  17 B  219  THR SER GLN ILE GLU VAL TYR LEU THR THR LYS                  
SEQRES   1 C  219  ASP PRO ASP PRO SER GLN LEU HIS ARG SER SER LEU VAL          
SEQRES   2 C  219  LYS ASN LEU GLN ASN ILE TYR PHE LEU TYR GLU GLY ASP          
SEQRES   3 C  219  PRO VAL THR HIS GLU ASN VAL LYS SER VAL ASP GLN LEU          
SEQRES   4 C  219  LEU SER HIS ASP LEU ILE TYR ASN VAL SER GLY PRO ASN          
SEQRES   5 C  219  TYR ASP LYS LEU LYS THR GLU LEU LYS ASN GLN GLU MET          
SEQRES   6 C  219  ALA THR LEU PHE LYS ASP LYS ASN VAL ASP ILE TYR GLY          
SEQRES   7 C  219  VAL GLU TYR TYR HIS LEU CYS TYR LEU CYS GLU ASN ALA          
SEQRES   8 C  219  GLU ARG SER ALA CYS ILE TYR GLY GLY VAL THR ASN HIS          
SEQRES   9 C  219  GLU GLY ASN HIS LEU GLU ILE PRO LYS LYS ILE VAL VAL          
SEQRES  10 C  219  LYS VAL SER ILE ASP GLY ILE GLN SER LEU SER PHE ASP          
SEQRES  11 C  219  ILE GLU THR ASN LYS LYS MET VAL THR ALA GLN GLU LEU          
SEQRES  12 C  219  ASP TYR LYS VAL ARG LYS TYR LEU THR ASP ASN LYS GLN          
SEQRES  13 C  219  LEU TYR THR ASN GLY PRO SER LYS TYR GLU THR GLY TYR          
SEQRES  14 C  219  ILE LYS PHE ILE PRO LYS ASN LYS GLU SER PHE TRP PHE          
SEQRES  15 C  219  ASP PHE PHE PRO GLU PRO GLU PHE THR GLN SER LYS TYR          
SEQRES  16 C  219  LEU MET ILE TYR LYS ASP ASN GLU THR LEU ASP SER ASN          
SEQRES  17 C  219  THR SER GLN ILE GLU VAL TYR LEU THR THR LYS                  
SEQRES   1 D  219  ASP PRO ASP PRO SER GLN LEU HIS ARG SER SER LEU VAL          
SEQRES   2 D  219  LYS ASN LEU GLN ASN ILE TYR PHE LEU TYR GLU GLY ASP          
SEQRES   3 D  219  PRO VAL THR HIS GLU ASN VAL LYS SER VAL ASP GLN LEU          
SEQRES   4 D  219  LEU SER HIS ASP LEU ILE TYR ASN VAL SER GLY PRO ASN          
SEQRES   5 D  219  TYR ASP LYS LEU LYS THR GLU LEU LYS ASN GLN GLU MET          
SEQRES   6 D  219  ALA THR LEU PHE LYS ASP LYS ASN VAL ASP ILE TYR GLY          
SEQRES   7 D  219  VAL GLU TYR TYR HIS LEU CYS TYR LEU CYS GLU ASN ALA          
SEQRES   8 D  219  GLU ARG SER ALA CYS ILE TYR GLY GLY VAL THR ASN HIS          
SEQRES   9 D  219  GLU GLY ASN HIS LEU GLU ILE PRO LYS LYS ILE VAL VAL          
SEQRES  10 D  219  LYS VAL SER ILE ASP GLY ILE GLN SER LEU SER PHE ASP          
SEQRES  11 D  219  ILE GLU THR ASN LYS LYS MET VAL THR ALA GLN GLU LEU          
SEQRES  12 D  219  ASP TYR LYS VAL ARG LYS TYR LEU THR ASP ASN LYS GLN          
SEQRES  13 D  219  LEU TYR THR ASN GLY PRO SER LYS TYR GLU THR GLY TYR          
SEQRES  14 D  219  ILE LYS PHE ILE PRO LYS ASN LYS GLU SER PHE TRP PHE          
SEQRES  15 D  219  ASP PHE PHE PRO GLU PRO GLU PHE THR GLN SER LYS TYR          
SEQRES  16 D  219  LEU MET ILE TYR LYS ASP ASN GLU THR LEU ASP SER ASN          
SEQRES  17 D  219  THR SER GLN ILE GLU VAL TYR LEU THR THR LYS                  
FORMUL   5  HOH   *87(H2 O)                                                     
HELIX    1   1 PRO A    6  GLN A    8  5                                   3    
HELIX    2   2 SER A   12  LEU A   14  5                                   3    
HELIX    3   3 LEU A   18  GLU A   26  5                                   9    
HELIX    4   4 GLN A   65  PHE A   71  1                                   7    
HELIX    5   5 ALA A  142  LYS A  157  1                                  16    
HELIX    6   6 GLN A  194  TYR A  201  1                                   8    
HELIX    7   7 PRO B    6  GLN B    8  5                                   3    
HELIX    8   8 SER B   12  LEU B   14  5                                   3    
HELIX    9   9 LEU B   18  GLU B   26  5                                   9    
HELIX   10  10 GLN B   65  PHE B   71  1                                   7    
HELIX   11  11 ALA B  142  LYS B  157  1                                  16    
HELIX   12  12 GLN B  194  TYR B  201  1                                   8    
HELIX   13  13 PRO C    6  GLN C    8  5                                   3    
HELIX   14  14 SER C   12  LEU C   14  5                                   3    
HELIX   15  15 LEU C   18  GLU C   26  5                                   9    
HELIX   16  16 GLN C   65  PHE C   71  1                                   7    
HELIX   17  17 ALA C  142  LYS C  157  1                                  16    
HELIX   18  18 GLN C  194  TYR C  201  1                                   8    
HELIX   19  19 SER D   12  LEU D   14  5                                   3    
HELIX   20  20 LEU D   18  GLU D   26  5                                   9    
HELIX   21  21 GLN D   65  PHE D   71  1                                   7    
HELIX   22  22 ILE D  123  GLY D  125  5                                   3    
HELIX   23  23 ALA D  142  LYS D  157  1                                  16    
HELIX   24  24 GLN D  194  TYR D  201  1                                   8    
SHEET    1   A 3 VAL A  30  HIS A  32  0                                        
SHEET    2   A 3 VAL A  76  GLY A  80 -1  N  GLY A  80   O  VAL A  30           
SHEET    3   A 3 VAL A 103  ASN A 105 -1  N  THR A 104   O  ASP A  77           
SHEET    1   B 3 ASP A  45  TYR A  48  0                                        
SHEET    2   B 3 LYS A  57  GLU A  61 -1  N  THR A  60   O  LEU A  46           
SHEET    3   B 3 SER A  96  TYR A 100  1  N  ALA A  97   O  LYS A  57           
SHEET    1   C 5 LEU A 129  THR A 135  0                                        
SHEET    2   C 5 LYS A 115  ILE A 123 -1  N  VAL A 121   O  LEU A 129           
SHEET    3   C 5 GLN A 213  THR A 219  1  N  ILE A 214   O  LYS A 120           
SHEET    4   C 5 THR A 169  ILE A 175 -1  N  ILE A 175   O  GLN A 213           
SHEET    5   C 5 PHE A 182  ASP A 185 -1  N  PHE A 184   O  ILE A 172           
SHEET    1   D 2 MET A 139  THR A 141  0                                        
SHEET    2   D 2 THR A 206  ASP A 208 -1  N  LEU A 207   O  VAL A 140           
SHEET    1   E 3 VAL B  30  HIS B  32  0                                        
SHEET    2   E 3 VAL B  76  GLY B  80 -1  N  GLY B  80   O  VAL B  30           
SHEET    3   E 3 VAL B 103  ASN B 105 -1  N  THR B 104   O  ASP B  77           
SHEET    1   F 3 ASP B  45  TYR B  48  0                                        
SHEET    2   F 3 LYS B  57  GLU B  61 -1  N  THR B  60   O  LEU B  46           
SHEET    3   F 3 SER B  96  TYR B 100  1  N  ALA B  97   O  LYS B  57           
SHEET    1   G 5 PHE B 182  ASP B 185  0                                        
SHEET    2   G 5 THR B 169  ILE B 175 -1  N  PHE B 174   O  PHE B 182           
SHEET    3   G 5 GLN B 213  THR B 219 -1  N  THR B 219   O  THR B 169           
SHEET    4   G 5 LYS B 115  ILE B 123  1  N  LYS B 120   O  ILE B 214           
SHEET    5   G 5 ILE B 126  THR B 135 -1  N  THR B 135   O  LYS B 115           
SHEET    1   H 2 MET B 139  THR B 141  0                                        
SHEET    2   H 2 THR B 206  ASP B 208 -1  N  LEU B 207   O  VAL B 140           
SHEET    1   I 3 VAL C  30  HIS C  32  0                                        
SHEET    2   I 3 VAL C  76  GLY C  80 -1  N  GLY C  80   O  VAL C  30           
SHEET    3   I 3 VAL C 103  ASN C 105 -1  N  THR C 104   O  ASP C  77           
SHEET    1   J 3 ASP C  45  TYR C  48  0                                        
SHEET    2   J 3 LYS C  57  GLU C  61 -1  N  THR C  60   O  LEU C  46           
SHEET    3   J 3 SER C  96  TYR C 100  1  N  ALA C  97   O  LYS C  57           
SHEET    1   K 5 LEU C 129  THR C 135  0                                        
SHEET    2   K 5 LYS C 115  ILE C 123 -1  N  VAL C 121   O  LEU C 129           
SHEET    3   K 5 GLN C 213  THR C 219  1  N  VAL C 216   O  LYS C 120           
SHEET    4   K 5 THR C 169  ILE C 175 -1  N  ILE C 175   O  GLN C 213           
SHEET    5   K 5 PHE C 182  ASP C 185 -1  N  PHE C 184   O  ILE C 172           
SHEET    1   L 2 MET C 139  THR C 141  0                                        
SHEET    2   L 2 THR C 206  ASP C 208 -1  N  LEU C 207   O  VAL C 140           
SHEET    1   M 3 VAL D  30  HIS D  32  0                                        
SHEET    2   M 3 VAL D  76  GLY D  80 -1  N  GLY D  80   O  VAL D  30           
SHEET    3   M 3 VAL D 103  ASN D 105 -1  N  THR D 104   O  ASP D  77           
SHEET    1   N 3 ASP D  45  TYR D  48  0                                        
SHEET    2   N 3 LYS D  57  GLU D  61 -1  N  THR D  60   O  LEU D  46           
SHEET    3   N 3 SER D  96  TYR D 100  1  N  ALA D  97   O  LYS D  57           
SHEET    1   O 2 ILE D 117  LYS D 120  0                                        
SHEET    2   O 2 SER D 130  ILE D 133 -1  N  ILE D 133   O  ILE D 117           
SHEET    1   P 2 MET D 139  THR D 141  0                                        
SHEET    2   P 2 THR D 206  ASP D 208 -1  N  LEU D 207   O  VAL D 140           
SHEET    1   Q 3 SER D 212  LEU D 218  0                                        
SHEET    2   Q 3 GLY D 170  PRO D 176 -1  N  ILE D 175   O  GLN D 213           
SHEET    3   Q 3 PHE D 182  ASP D 185 -1  N  PHE D 184   O  ILE D 172           
SSBOND   1 CYS A   87    CYS A   98                          1555   1555  2.03  
SSBOND   2 CYS B   87    CYS B   98                          1555   1555  2.02  
SSBOND   3 CYS C   87    CYS C   98                          1555   1555  2.02  
SSBOND   4 CYS D   87    CYS D   98                          1555   1555  2.02  
CRYST1  127.400  101.000   81.800  90.00  90.00  90.00 P 21 21 2    16          
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      0.007849  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.009901  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012225        0.00000                         
MTRIX1   1  0.823750  0.361020  0.437150      -26.65018    1                    
MTRIX2   1  0.363180 -0.928090  0.082090      119.31669    1                    
MTRIX3   1  0.435350  0.091150 -0.895630       10.28196    1                    
MTRIX1   2 -0.894870 -0.435750 -0.096580      213.84998    1                    
MTRIX2   2 -0.443010  0.840890  0.310870       44.31574    1                    
MTRIX3   2 -0.054240  0.320980 -0.945530       38.96877    1                    
MTRIX1   3 -0.927300  0.075670 -0.366590      184.11707    1                    
MTRIX2   3  0.084540 -0.911710 -0.402050      158.87866    1                    
MTRIX3   3 -0.364650 -0.403810  0.839030       71.36186    1