HEADER    TRANSFERASE                             24-MAR-05   1Z7G               
TITLE     FREE HUMAN HGPRT                                                       
COMPND    MOL_ID: 1;                                                             
COMPND   2 MOLECULE: HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE;             
COMPND   3 CHAIN: A, B, C, D;                                                    
COMPND   4 SYNONYM: HGPRT, HGPRTASE;                                             
COMPND   5 EC: 2.4.2.8;                                                          
COMPND   6 ENGINEERED: YES                                                       
SOURCE    MOL_ID: 1;                                                             
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                    
SOURCE   3 ORGANISM_COMMON: HUMAN;                                               
SOURCE   4 ORGANISM_TAXID: 9606;                                                 
SOURCE   5 GENE: HPRT1, HPRT;                                                    
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                  
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                         
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: S 606;                                      
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PHTM                                       
KEYWDS    FLEXIBILITY, TRANS CIS PEPTIDE BOND ISOMERIZATION, NUCLEOTIDE          
KEYWDS   2 BINDING, TRANSFERASE                                                  
EXPDTA    X-RAY DIFFRACTION                                                      
AUTHOR    D.T.KEOUGH,I.M.BRERETON,J.DE JERSEY,L.W.GUDDAT                         
REVDAT   3   23-AUG-23 1Z7G    1       REMARK                                    
REVDAT   2   24-FEB-09 1Z7G    1       VERSN                                     
REVDAT   1   02-AUG-05 1Z7G    0                                                 
JRNL        AUTH   D.T.KEOUGH,I.M.BRERETON,J.DE JERSEY,L.W.GUDDAT                
JRNL        TITL   THE CRYSTAL STRUCTURE OF FREE HUMAN HYPOXANTHINE-GUANINE      
JRNL        TITL 2 PHOSPHORIBOSYLTRANSFERASE REVEALS EXTENSIVE CONFORMATIONAL    
JRNL        TITL 3 PLASTICITY THROUGHOUT THE CATALYTIC CYCLE                     
JRNL        REF    J.MOL.BIOL.                   V. 351   170 2005               
JRNL        REFN                   ISSN 0022-2836                                
JRNL        PMID   15990111                                                      
JRNL        DOI    10.1016/J.JMB.2005.05.061                                     
REMARK   2                                                                       
REMARK   2 RESOLUTION.    1.90 ANGSTROMS.                                        
REMARK   3                                                                       
REMARK   3 REFINEMENT.                                                           
REMARK   3   PROGRAM     : CNS                                                   
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 : ENGH & HUBER                                     
REMARK   3                                                                       
REMARK   3  DATA USED IN REFINEMENT.                                             
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90                            
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 46.30                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 1.000                           
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                            
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                            
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 95.3                            
REMARK   3   NUMBER OF REFLECTIONS             : 64112                           
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) : 0.213                            
REMARK   3   FREE R VALUE                     : 0.254                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                             
REMARK   3   FREE R VALUE TEST SET COUNT      : 6505                             
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) : 1.90                          
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.97                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 72.50                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                          
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2940                        
REMARK   3   BIN FREE R VALUE                    : 0.3280                        
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                          
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 517                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.034                         
REMARK   3                                                                       
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                     
REMARK   3   PROTEIN ATOMS            : 6273                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                        
REMARK   3   HETEROGEN ATOMS          : 0                                        
REMARK   3   SOLVENT ATOMS            : 504                                      
REMARK   3                                                                       
REMARK   3  B VALUES.                                                            
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                            
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 59.11                           
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) : 1.560                            
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 : ISOTROPIC                                  
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) : 2.500 ; NULL                  
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                  
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                  
REMARK   3                                                                       
REMARK   3  BULK SOLVENT MODELING.                                               
REMARK   3   METHOD USED : NULL                                                  
REMARK   3   KSOL        : NULL                                                  
REMARK   3   BSOL        : 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  : PROTEIN_REP.PARAM                               
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                 
REMARK   3  PARAMETER FILE  3  : ION.PARAM                                       
REMARK   3  PARAMETER FILE  4  : CARBOHYDRATE.PARAM                              
REMARK   3  PARAMETER FILE  5  : NULL                                            
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                     
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                       
REMARK   3  TOPOLOGY FILE  3   : ION.TOP                                         
REMARK   3  TOPOLOGY FILE  4   : CARBOHYDRATE.TOP                                
REMARK   3  TOPOLOGY FILE  5   : NULL                                            
REMARK   3                                                                       
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                       
REMARK   4                                                                       
REMARK   4 1Z7G COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                          
REMARK 100                                                                       
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-APR-05.                   
REMARK 100 THE DEPOSITION ID IS D_1000032393.                                    
REMARK 200                                                                       
REMARK 200 EXPERIMENTAL DETAILS                                                  
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                   
REMARK 200  DATE OF DATA COLLECTION        : 03-JUN-03                           
REMARK 200  TEMPERATURE           (KELVIN) : 100                                 
REMARK 200  PH                             : 4.6                                 
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                   
REMARK 200                                                                       
REMARK 200  SYNCHROTRON              (Y/N) : N                                   
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                      
REMARK 200  BEAMLINE                       : NULL                                
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU FR-E                         
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                   
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                              
REMARK 200  MONOCHROMATOR                  : SINGLE WAVELENGTH                   
REMARK 200  OPTICS                         : OSMIC                               
REMARK 200                                                                       
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                         
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : CRYSTAL CLEAR 1.35, CRYSTALCLEAR    
REMARK 200                                   V. 1.35 (MSC/RIGAKU)                
REMARK 200  DATA SCALING SOFTWARE          : CRYSTALCLEAR V. 1.35                
REMARK 200                                   (MSC/RIGAKU)                        
REMARK 200                                                                       
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 66957                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.900                               
REMARK 200  RESOLUTION RANGE LOW       (A) : 46.300                              
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                               
REMARK 200                                                                       
REMARK 200 OVERALL.                                                              
REMARK 200  COMPLETENESS FOR RANGE     (%) : 95.6                                
REMARK 200  DATA REDUNDANCY                : 2.500                               
REMARK 200  R MERGE                    (I) : 0.06200                             
REMARK 200  R SYM                      (I) : 0.06200                             
REMARK 200   FOR THE DATA SET  : 12.3000                             
REMARK 200                                                                       
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                      
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90                      
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.97                      
REMARK 200  COMPLETENESS FOR SHELL     (%) : 79.3                                
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.70                                
REMARK 200  R MERGE FOR SHELL          (I) : 0.28800                             
REMARK 200  R SYM FOR SHELL            (I) : 0.28800                             
REMARK 200   FOR SHELL         : 2.200                               
REMARK 200                                                                       
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                               
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT         
REMARK 200 SOFTWARE USED: CNS                                                    
REMARK 200 STARTING MODEL: PDB ENTRY 1HMP                                        
REMARK 200                                                                       
REMARK 200 REMARK: NULL                                                          
REMARK 280                                                                       
REMARK 280 CRYSTAL                                                               
REMARK 280 SOLVENT CONTENT, VS   (%): 39.10                                      
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.10                      
REMARK 280                                                                       
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.2 M AMMONIUM ACETATE, 0.1 M SODIUM      
REMARK 280  ACETATE, 30% PEG4000, PH 4.6, VAPOR DIFFUSION, HANGING DROP,         
REMARK 280  TEMPERATURE 291K                                                     
REMARK 290                                                                       
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                             
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1                           
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       74.78500             
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       25.90000             
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000             
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       74.78500             
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       25.90000             
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000             
REMARK 290                                                                       
REMARK 290 REMARK: NULL                                                          
REMARK 300                                                                       
REMARK 300 BIOMOLECULE: 1, 2                                                     
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 300 REMARK: THE BIOLOGICAL UNIT IS A TETRAMER. THE ASYMMETRIC UNIT        
REMARK 300 CONSISTS OF TWO SEPERATE DIMERS. TETRAMERS ARE GENERATED BY           
REMARK 300 CRYSTALLOGRAPHIC TWO FOLD AXES OF SYMMETRY.                           
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                                   
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 350   BIOMT1   2 -1.000000  0.000000  0.000000     -149.57000             
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000             
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000        0.00000             
REMARK 350                                                                       
REMARK 350 BIOMOLECULE: 2                                                        
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 350   BIOMT1   2 -1.000000  0.000000  0.000000      -31.99837             
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000             
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000      113.07986             
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     ALA A     1                                                       
REMARK 465     THR A     2                                                       
REMARK 465     ARG A     3                                                       
REMARK 465     SER A   103                                                       
REMARK 465     TYR A   104                                                       
REMARK 465     CYS A   105                                                       
REMARK 465     ASN A   106                                                       
REMARK 465     ASP A   107                                                       
REMARK 465     GLN A   108                                                       
REMARK 465     SER A   109                                                       
REMARK 465     THR A   110                                                       
REMARK 465     GLY A   111                                                       
REMARK 465     ASP A   112                                                       
REMARK 465     PRO A   168                                                       
REMARK 465     ARG A   169                                                       
REMARK 465     SER A   170                                                       
REMARK 465     VAL A   171                                                       
REMARK 465     GLY A   172                                                       
REMARK 465     ALA B     1                                                       
REMARK 465     THR B     2                                                       
REMARK 465     ARG B     3                                                       
REMARK 465     LYS B   102                                                       
REMARK 465     SER B   103                                                       
REMARK 465     TYR B   104                                                       
REMARK 465     CYS B   105                                                       
REMARK 465     ASN B   106                                                       
REMARK 465     ASP B   107                                                       
REMARK 465     GLN B   108                                                       
REMARK 465     SER B   109                                                       
REMARK 465     THR B   110                                                       
REMARK 465     GLY B   111                                                       
REMARK 465     ASP B   112                                                       
REMARK 465     GLY B   117                                                       
REMARK 465     GLY B   118                                                       
REMARK 465     ASP B   119                                                       
REMARK 465     ASP B   120                                                       
REMARK 465     ALA C     1                                                       
REMARK 465     THR C     2                                                       
REMARK 465     ARG C     3                                                       
REMARK 465     SER C   103                                                       
REMARK 465     TYR C   104                                                       
REMARK 465     CYS C   105                                                       
REMARK 465     ASN C   106                                                       
REMARK 465     ASP C   107                                                       
REMARK 465     GLN C   108                                                       
REMARK 465     SER C   109                                                       
REMARK 465     THR C   110                                                       
REMARK 465     GLY C   111                                                       
REMARK 465     ASP C   112                                                       
REMARK 465     ALA D     1                                                       
REMARK 465     THR D     2                                                       
REMARK 465     ARG D     3                                                       
REMARK 465     TYR D   104                                                       
REMARK 465     CYS D   105                                                       
REMARK 465     ASN D   106                                                       
REMARK 465     ASP D   107                                                       
REMARK 465     GLN D   108                                                       
REMARK 465     SER D   109                                                       
REMARK 465     THR D   110                                                       
REMARK 465     GLY D   118                                                       
REMARK 465     ASP D   119                                                       
REMARK 465     ASP D   120                                                       
REMARK 465     SER D   170                                                       
REMARK 465     VAL D   171                                                       
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     CYS A  22    SG                                                   
REMARK 470     LYS A 102    CG   CD   CE   NZ                                    
REMARK 470     ILE A 113    CG1  CG2  CD1                                        
REMARK 470     LYS A 114    CG   CD   CE   NZ                                    
REMARK 470     LYS A 140    CG   CD   CE   NZ                                    
REMARK 470     LYS A 155    CG   CD   CE   NZ                                    
REMARK 470     THR A 167    OG1  CG2                                             
REMARK 470     CYS A 205    SG                                                   
REMARK 470     LYS A 216    CG   CD   CE   NZ                                    
REMARK 470     CYS B  22    SG                                                   
REMARK 470     ILE B 113    CG1  CG2  CD1                                        
REMARK 470     LEU B 121    CB   CG   CD1  CD2                                   
REMARK 470     LYS B 140    CG   CD   CE   NZ                                    
REMARK 470     LYS B 155    CG   CD   CE   NZ                                    
REMARK 470     ARG B 169    CG   CD   NE   CZ   NH1  NH2                         
REMARK 470     CYS B 205    SG                                                   
REMARK 470     LYS B 216    CG   CD   CE   NZ                                    
REMARK 470     CYS C  22    SG                                                   
REMARK 470     ARG C 100    CG   CD   NE   CZ   NH1  NH2                         
REMARK 470     LYS C 102    CG   CD   CE   NZ                                    
REMARK 470     ILE C 113    CB   CG1  CG2  CD1                                   
REMARK 470     LYS C 140    CG   CD   CE   NZ                                    
REMARK 470     ARG C 169    CG   CD   NE   CZ   NH1  NH2                         
REMARK 470     CYS C 205    SG                                                   
REMARK 470     LYS C 216    CG   CD   CE   NZ                                    
REMARK 470     CYS D  22    SG                                                   
REMARK 470     LYS D 102    CG   CD   CE   NZ                                    
REMARK 470     ASP D 112    CG   OD1  OD2                                        
REMARK 470     ILE D 113    CG1  CG2  CD1                                        
REMARK 470     LYS D 140    CG   CD   CE   NZ                                    
REMARK 470     ARG D 150    CG   CD   NE   CZ   NH1  NH2                         
REMARK 470     LYS D 155    CG   CD   CE   NZ                                    
REMARK 470     ARG D 169    CG   CD   NE   CZ   NH1  NH2                         
REMARK 470     LYS D 174    CG   CD   CE   NZ                                    
REMARK 470     CYS D 205    SG                                                   
REMARK 470     LYS D 216    CG   CD   CE   NZ                                    
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    TYR A 190      -66.60     64.61                                    
REMARK 500    ALA A 191       17.20   -144.50                                    
REMARK 500    SER B 122       88.22    -68.73                                    
REMARK 500    THR B 123       45.94   -107.72                                    
REMARK 500    LEU B 124       24.92    -76.35                                    
REMARK 500    THR B 138      159.68    -45.37                                    
REMARK 500    ARG B 169     -158.45    -72.69                                    
REMARK 500    TYR B 190      -70.78     64.87                                    
REMARK 500    ALA B 191       26.99   -142.74                                    
REMARK 500    HIS C  60      109.96    -53.88                                    
REMARK 500    ILE C 116      -80.62    -93.57                                    
REMARK 500    ASP C 137      -63.15   -107.84                                    
REMARK 500    TYR C 190      -68.65     64.29                                    
REMARK 500    ALA C 191       18.64   -140.54                                    
REMARK 500    TYR D 190      -67.50     66.19                                    
REMARK 500    ALA D 191       24.90   -146.51                                    
REMARK 500                                                                       
REMARK 500 REMARK: NULL                                                          
REMARK 900                                                                       
REMARK 900 RELATED ENTRIES                                                       
REMARK 900 RELATED ID: 1HMP   RELATED DB: PDB                                    
REMARK 900 SAME PROTEIN IN COMPLEX WITH GMP                                      
REMARK 900 RELATED ID: 1D6N   RELATED DB: PDB                                    
REMARK 900 SAME PROTEIN IN COMPLEX WITH HPP, MG2+ AND PRPP                       
REMARK 900 RELATED ID: 1BZY   RELATED DB: PDB                                    
REMARK 900 SAME PROTEIN IN COMPLEX WITH IMMUCILLINGP, MG2+ AND PPI               
DBREF  1Z7G A    1   217  UNP    P00492   HPRT_HUMAN       1    217              
DBREF  1Z7G B    1   217  UNP    P00492   HPRT_HUMAN       1    217              
DBREF  1Z7G C    1   217  UNP    P00492   HPRT_HUMAN       1    217              
DBREF  1Z7G D    1   217  UNP    P00492   HPRT_HUMAN       1    217              
SEQRES   1 A  217  ALA THR ARG SER PRO GLY VAL VAL ILE SER ASP ASP GLU           
SEQRES   2 A  217  PRO GLY TYR ASP LEU ASP LEU PHE CYS ILE PRO ASN HIS           
SEQRES   3 A  217  TYR ALA GLU ASP LEU GLU ARG VAL PHE ILE PRO HIS GLY           
SEQRES   4 A  217  LEU ILE MET ASP ARG THR GLU ARG LEU ALA ARG ASP VAL           
SEQRES   5 A  217  MET LYS GLU MET GLY GLY HIS HIS ILE VAL ALA LEU CYS           
SEQRES   6 A  217  VAL LEU LYS GLY GLY TYR LYS PHE PHE ALA ASP LEU LEU           
SEQRES   7 A  217  ASP TYR ILE LYS ALA LEU ASN ARG ASN SER ASP ARG SER           
SEQRES   8 A  217  ILE PRO MET THR VAL ASP PHE ILE ARG LEU LYS SER TYR           
SEQRES   9 A  217  CYS ASN ASP GLN SER THR GLY ASP ILE LYS VAL ILE GLY           
SEQRES  10 A  217  GLY ASP ASP LEU SER THR LEU THR GLY LYS ASN VAL LEU           
SEQRES  11 A  217  ILE VAL GLU ASP ILE ILE ASP THR GLY LYS THR MET GLN           
SEQRES  12 A  217  THR LEU LEU SER LEU VAL ARG GLN TYR ASN PRO LYS MET           
SEQRES  13 A  217  VAL LYS VAL ALA SER LEU LEU VAL LYS ARG THR PRO ARG           
SEQRES  14 A  217  SER VAL GLY TYR LYS PRO ASP PHE VAL GLY PHE GLU ILE           
SEQRES  15 A  217  PRO ASP LYS PHE VAL VAL GLY TYR ALA LEU ASP TYR ASN           
SEQRES  16 A  217  GLU TYR PHE ARG ASP LEU ASN HIS VAL CYS VAL ILE SER           
SEQRES  17 A  217  GLU THR GLY LYS ALA LYS TYR LYS ALA                           
SEQRES   1 B  217  ALA THR ARG SER PRO GLY VAL VAL ILE SER ASP ASP GLU           
SEQRES   2 B  217  PRO GLY TYR ASP LEU ASP LEU PHE CYS ILE PRO ASN HIS           
SEQRES   3 B  217  TYR ALA GLU ASP LEU GLU ARG VAL PHE ILE PRO HIS GLY           
SEQRES   4 B  217  LEU ILE MET ASP ARG THR GLU ARG LEU ALA ARG ASP VAL           
SEQRES   5 B  217  MET LYS GLU MET GLY GLY HIS HIS ILE VAL ALA LEU CYS           
SEQRES   6 B  217  VAL LEU LYS GLY GLY TYR LYS PHE PHE ALA ASP LEU LEU           
SEQRES   7 B  217  ASP TYR ILE LYS ALA LEU ASN ARG ASN SER ASP ARG SER           
SEQRES   8 B  217  ILE PRO MET THR VAL ASP PHE ILE ARG LEU LYS SER TYR           
SEQRES   9 B  217  CYS ASN ASP GLN SER THR GLY ASP ILE LYS VAL ILE GLY           
SEQRES  10 B  217  GLY ASP ASP LEU SER THR LEU THR GLY LYS ASN VAL LEU           
SEQRES  11 B  217  ILE VAL GLU ASP ILE ILE ASP THR GLY LYS THR MET GLN           
SEQRES  12 B  217  THR LEU LEU SER LEU VAL ARG GLN TYR ASN PRO LYS MET           
SEQRES  13 B  217  VAL LYS VAL ALA SER LEU LEU VAL LYS ARG THR PRO ARG           
SEQRES  14 B  217  SER VAL GLY TYR LYS PRO ASP PHE VAL GLY PHE GLU ILE           
SEQRES  15 B  217  PRO ASP LYS PHE VAL VAL GLY TYR ALA LEU ASP TYR ASN           
SEQRES  16 B  217  GLU TYR PHE ARG ASP LEU ASN HIS VAL CYS VAL ILE SER           
SEQRES  17 B  217  GLU THR GLY LYS ALA LYS TYR LYS ALA                           
SEQRES   1 C  217  ALA THR ARG SER PRO GLY VAL VAL ILE SER ASP ASP GLU           
SEQRES   2 C  217  PRO GLY TYR ASP LEU ASP LEU PHE CYS ILE PRO ASN HIS           
SEQRES   3 C  217  TYR ALA GLU ASP LEU GLU ARG VAL PHE ILE PRO HIS GLY           
SEQRES   4 C  217  LEU ILE MET ASP ARG THR GLU ARG LEU ALA ARG ASP VAL           
SEQRES   5 C  217  MET LYS GLU MET GLY GLY HIS HIS ILE VAL ALA LEU CYS           
SEQRES   6 C  217  VAL LEU LYS GLY GLY TYR LYS PHE PHE ALA ASP LEU LEU           
SEQRES   7 C  217  ASP TYR ILE LYS ALA LEU ASN ARG ASN SER ASP ARG SER           
SEQRES   8 C  217  ILE PRO MET THR VAL ASP PHE ILE ARG LEU LYS SER TYR           
SEQRES   9 C  217  CYS ASN ASP GLN SER THR GLY ASP ILE LYS VAL ILE GLY           
SEQRES  10 C  217  GLY ASP ASP LEU SER THR LEU THR GLY LYS ASN VAL LEU           
SEQRES  11 C  217  ILE VAL GLU ASP ILE ILE ASP THR GLY LYS THR MET GLN           
SEQRES  12 C  217  THR LEU LEU SER LEU VAL ARG GLN TYR ASN PRO LYS MET           
SEQRES  13 C  217  VAL LYS VAL ALA SER LEU LEU VAL LYS ARG THR PRO ARG           
SEQRES  14 C  217  SER VAL GLY TYR LYS PRO ASP PHE VAL GLY PHE GLU ILE           
SEQRES  15 C  217  PRO ASP LYS PHE VAL VAL GLY TYR ALA LEU ASP TYR ASN           
SEQRES  16 C  217  GLU TYR PHE ARG ASP LEU ASN HIS VAL CYS VAL ILE SER           
SEQRES  17 C  217  GLU THR GLY LYS ALA LYS TYR LYS ALA                           
SEQRES   1 D  217  ALA THR ARG SER PRO GLY VAL VAL ILE SER ASP ASP GLU           
SEQRES   2 D  217  PRO GLY TYR ASP LEU ASP LEU PHE CYS ILE PRO ASN HIS           
SEQRES   3 D  217  TYR ALA GLU ASP LEU GLU ARG VAL PHE ILE PRO HIS GLY           
SEQRES   4 D  217  LEU ILE MET ASP ARG THR GLU ARG LEU ALA ARG ASP VAL           
SEQRES   5 D  217  MET LYS GLU MET GLY GLY HIS HIS ILE VAL ALA LEU CYS           
SEQRES   6 D  217  VAL LEU LYS GLY GLY TYR LYS PHE PHE ALA ASP LEU LEU           
SEQRES   7 D  217  ASP TYR ILE LYS ALA LEU ASN ARG ASN SER ASP ARG SER           
SEQRES   8 D  217  ILE PRO MET THR VAL ASP PHE ILE ARG LEU LYS SER TYR           
SEQRES   9 D  217  CYS ASN ASP GLN SER THR GLY ASP ILE LYS VAL ILE GLY           
SEQRES  10 D  217  GLY ASP ASP LEU SER THR LEU THR GLY LYS ASN VAL LEU           
SEQRES  11 D  217  ILE VAL GLU ASP ILE ILE ASP THR GLY LYS THR MET GLN           
SEQRES  12 D  217  THR LEU LEU SER LEU VAL ARG GLN TYR ASN PRO LYS MET           
SEQRES  13 D  217  VAL LYS VAL ALA SER LEU LEU VAL LYS ARG THR PRO ARG           
SEQRES  14 D  217  SER VAL GLY TYR LYS PRO ASP PHE VAL GLY PHE GLU ILE           
SEQRES  15 D  217  PRO ASP LYS PHE VAL VAL GLY TYR ALA LEU ASP TYR ASN           
SEQRES  16 D  217  GLU TYR PHE ARG ASP LEU ASN HIS VAL CYS VAL ILE SER           
SEQRES  17 D  217  GLU THR GLY LYS ALA LYS TYR LYS ALA                           
FORMUL   5  HOH   *504(H2 O)                                                     
HELIX    1   1 ASP A   17  PHE A   21  5                                   5     
HELIX    2   2 PRO A   24  ALA A   28  5                                   5     
HELIX    3   3 PRO A   37  GLY A   57  1                                  21     
HELIX    4   4 TYR A   71  ARG A   86  1                                  16     
HELIX    5   5 ASP A  120  THR A  125  5                                   6     
HELIX    6   6 THR A  138  GLN A  151  1                                  14     
HELIX    7   7 SER A  208  LYS A  216  1                                   9     
HELIX    8   8 ASP B   17  PHE B   21  5                                   5     
HELIX    9   9 PRO B   24  ALA B   28  5                                   5     
HELIX   10  10 PRO B   37  GLY B   57  1                                  21     
HELIX   11  11 TYR B   71  ARG B   86  1                                  16     
HELIX   12  12 THR B  138  GLN B  151  1                                  14     
HELIX   13  13 SER B  208  TYR B  215  1                                   8     
HELIX   14  14 ASP C   17  PHE C   21  5                                   5     
HELIX   15  15 PRO C   24  ALA C   28  5                                   5     
HELIX   16  16 PRO C   37  GLY C   57  1                                  21     
HELIX   17  17 TYR C   71  ARG C   86  1                                  16     
HELIX   18  18 ASP C  120  THR C  125  5                                   6     
HELIX   19  19 GLY C  139  GLN C  151  1                                  13     
HELIX   20  20 SER C  208  LYS C  216  1                                   9     
HELIX   21  21 ASP D   17  PHE D   21  5                                   5     
HELIX   22  22 PRO D   24  ALA D   28  5                                   5     
HELIX   23  23 PRO D   37  GLY D   57  1                                  21     
HELIX   24  24 TYR D   71  ARG D   86  1                                  16     
HELIX   25  25 LEU D  121  THR D  125  5                                   5     
HELIX   26  26 THR D  138  GLN D  151  1                                  14     
HELIX   27  27 SER D  208  LYS D  216  1                                   9     
SHEET    1   A 6 VAL A   7  VAL A   8  0                                         
SHEET    2   A 6 PHE A 177  ILE A 182  1  O  GLU A 181   N  VAL A   7            
SHEET    3   A 6 MET A 156  LYS A 165  1  N  LEU A 162   O  PHE A 180            
SHEET    4   A 6 ASN A 128  ILE A 135  1  N  ILE A 131   O  ALA A 160            
SHEET    5   A 6 ILE A  61  VAL A  66  1  N  LEU A  64   O  VAL A 132            
SHEET    6   A 6 MET A  94  ILE A  99  1  O  THR A  95   N  ALA A  63            
SHEET    1   B 3 LEU A  31  ILE A  36  0                                         
SHEET    2   B 3 VAL A 204  ILE A 207 -1  O  VAL A 206   N  GLU A  32            
SHEET    3   B 3 VAL A 187  VAL A 188 -1  N  VAL A 188   O  CYS A 205            
SHEET    1   C 6 VAL B   7  VAL B   8  0                                         
SHEET    2   C 6 PHE B 177  ILE B 182  1  O  GLU B 181   N  VAL B   7            
SHEET    3   C 6 MET B 156  LYS B 165  1  N  LEU B 162   O  PHE B 180            
SHEET    4   C 6 ASN B 128  ILE B 135  1  N  ILE B 131   O  LYS B 158            
SHEET    5   C 6 ILE B  61  VAL B  66  1  N  LEU B  64   O  LEU B 130            
SHEET    6   C 6 MET B  94  ILE B  99  1  O  THR B  95   N  ALA B  63            
SHEET    1   D 3 LEU B  31  ILE B  36  0                                         
SHEET    2   D 3 VAL B 204  ILE B 207 -1  O  VAL B 206   N  GLU B  32            
SHEET    3   D 3 VAL B 187  VAL B 188 -1  N  VAL B 188   O  CYS B 205            
SHEET    1   E 6 VAL C   7  VAL C   8  0                                         
SHEET    2   E 6 PHE C 177  ILE C 182  1  O  GLU C 181   N  VAL C   7            
SHEET    3   E 6 MET C 156  LYS C 165  1  N  SER C 161   O  PHE C 177            
SHEET    4   E 6 ASN C 128  ILE C 136  1  N  ILE C 131   O  LYS C 158            
SHEET    5   E 6 ILE C  61  VAL C  66  1  N  VAL C  62   O  LEU C 130            
SHEET    6   E 6 MET C  94  ILE C  99  1  O  THR C  95   N  ALA C  63            
SHEET    1   F 3 LEU C  31  ILE C  36  0                                         
SHEET    2   F 3 VAL C 204  ILE C 207 -1  O  VAL C 206   N  GLU C  32            
SHEET    3   F 3 VAL C 187  VAL C 188 -1  N  VAL C 188   O  CYS C 205            
SHEET    1   G 7 VAL D   7  VAL D   8  0                                         
SHEET    2   G 7 PHE D 177  ILE D 182  1  O  GLU D 181   N  VAL D   7            
SHEET    3   G 7 MET D 156  LYS D 165  1  N  LEU D 162   O  PHE D 180            
SHEET    4   G 7 ASN D 128  ILE D 135  1  N  ILE D 131   O  ALA D 160            
SHEET    5   G 7 ILE D  61  VAL D  66  1  N  LEU D  64   O  LEU D 130            
SHEET    6   G 7 MET D  94  LYS D 102  1  O  THR D  95   N  ALA D  63            
SHEET    7   G 7 LYS D 114  ILE D 116 -1  O  LYS D 114   N  LYS D 102            
SHEET    1   H 3 LEU D  31  ILE D  36  0                                         
SHEET    2   H 3 VAL D 204  ILE D 207 -1  O  VAL D 206   N  GLU D  32            
SHEET    3   H 3 VAL D 187  VAL D 188 -1  N  VAL D 188   O  CYS D 205            
CRYST1  149.570   51.800  117.520  90.00 105.80  90.00 C 1 2 1      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      0.006686  0.000000  0.001892        0.00000                          
SCALE2      0.000000  0.019305  0.000000        0.00000                          
SCALE3      0.000000  0.000000  0.008843        0.00000                          
END