PDB Short entry for 1ZN7
HEADER    TRANSFERASE                             11-MAY-05   1ZN7              
TITLE     HUMAN ADENINE PHOSPHORIBOSYLTRANSFERASE COMPLEXED WITH PRPP, ADE AND  
TITLE    2 R5P                                                                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ADENINE PHOSPHORIBOSYLTRANSFERASE;                         
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: APRT;                                                       
COMPND   5 EC: 2.4.2.7;                                                         
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: APRT;                                                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET29A                                    
KEYWDS    TRANSFERASE, GLYCOSYLTRANSFERASE, PURINE SALVAGE                      
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.IULEK,M.SILVA,C.H.T.P.TOMICH,O.H.THIEMANN                           
REVDAT   6   14-FEB-24 1ZN7    1       HETSYN                                   
REVDAT   5   29-JUL-20 1ZN7    1       COMPND REMARK HETNAM LINK                
REVDAT   5 2                   1       SITE   ATOM                              
REVDAT   4   13-JUL-11 1ZN7    1       VERSN                                    
REVDAT   3   24-FEB-09 1ZN7    1       VERSN                                    
REVDAT   2   29-APR-08 1ZN7    1       JRNL                                     
REVDAT   1   25-APR-06 1ZN7    0                                                
JRNL        AUTH   C.H.SILVA,M.SILVA,J.IULEK,O.H.THIEMANN                       
JRNL        TITL   STRUCTURAL COMPLEXES OF HUMAN ADENINE                        
JRNL        TITL 2 PHOSPHORIBOSYLTRANSFERASE REVEAL NOVEL FEATURES OF THE APRT  
JRNL        TITL 3 CATALYTIC MECHANISM                                          
JRNL        REF    J.BIOMOL.STRUCT.DYN.          V.  25   589 2008              
JRNL        REFN                   ISSN 0739-1102                               
JRNL        PMID   18399692                                                     
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.83 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0003                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.83                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 39.75                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 97.2                           
REMARK   3   NUMBER OF REFLECTIONS             : 27055                          
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 + TEST SET) : 0.148                           
REMARK   3   R VALUE            (WORKING SET) : 0.146                           
REMARK   3   FREE R VALUE                     : 0.190                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1448                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.83                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.88                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1927                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 97.29                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2390                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 118                          
REMARK   3   BIN FREE R VALUE                    : 0.3110                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2715                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 104                                     
REMARK   3   SOLVENT ATOMS            : 367                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   B VALUE TYPE : LIKELY RESIDUAL                                     
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 18.00                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.14000                                             
REMARK   3    B22 (A**2) : -0.97000                                             
REMARK   3    B33 (A**2) : 0.25000                                              
REMARK   3    B12 (A**2) : 1.41000                                              
REMARK   3    B13 (A**2) : -0.83000                                             
REMARK   3    B23 (A**2) : 0.26000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.134         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.125         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.088         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 6.415         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.971                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.953                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  3002 ; 0.018 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  2866 ; 0.002 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  4091 ; 1.815 ; 2.047       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  6669 ; 0.965 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   360 ; 6.446 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   123 ;32.838 ;23.171       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   527 ;15.151 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    27 ;20.455 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   479 ; 0.112 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  3189 ; 0.007 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   576 ; 0.002 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   614 ; 0.217 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  2904 ; 0.204 ; 0.200       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  1342 ; 0.168 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  1680 ; 0.085 ; 0.200       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   298 ; 0.211 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):     3 ; 0.094 ; 0.200       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    22 ; 0.131 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):    74 ; 0.257 ; 0.200       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    38 ; 0.232 ; 0.200       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  1862 ; 1.030 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   734 ; 0.287 ; 1.500       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2927 ; 1.473 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1266 ; 2.407 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1164 ; 3.528 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 1                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 16                                   
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A     3        A   180                          
REMARK   3    RESIDUE RANGE :   A   502        A   502                          
REMARK   3    RESIDUE RANGE :   A   504        A   504                          
REMARK   3    RESIDUE RANGE :   A   500        A   500                          
REMARK   3    RESIDUE RANGE :   A   506        A   506                          
REMARK   3    RESIDUE RANGE :   A   655        A   655                          
REMARK   3    RESIDUE RANGE :   A   656        A   661                          
REMARK   3    RESIDUE RANGE :   B     3        B   180                          
REMARK   3    RESIDUE RANGE :   B   503        B   503                          
REMARK   3    RESIDUE RANGE :   A   505        A   505                          
REMARK   3    RESIDUE RANGE :   B   501        B   501                          
REMARK   3    RESIDUE RANGE :   B   507        B   507                          
REMARK   3    RESIDUE RANGE :   B   656        B   656                          
REMARK   3    RESIDUE RANGE :   B   657        B   662                          
REMARK   3    RESIDUE RANGE :   A   662        A   832                          
REMARK   3    RESIDUE RANGE :   B   663        B   846                          
REMARK   3    ORIGIN FOR THE GROUP (A):  23.5728   0.3303  -0.4341              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.0257 T22:  -0.0400                                     
REMARK   3      T33:  -0.0298 T12:   0.0013                                     
REMARK   3      T13:   0.0006 T23:   0.0183                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.4831 L22:   0.4410                                     
REMARK   3      L33:   0.4796 L12:  -0.2263                                     
REMARK   3      L13:   0.0564 L23:   0.1951                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0019 S12:   0.0004 S13:   0.0016                       
REMARK   3      S21:  -0.0233 S22:  -0.0032 S23:   0.0015                       
REMARK   3      S31:  -0.0107 S32:  -0.0017 S33:   0.0013                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 1ZN7 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 23-MAY-05.                  
REMARK 100 THE DEPOSITION ID IS D_1000032918.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : 8.50                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
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                             
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
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 : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 28504                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.830                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 39.750                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.0                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : 0.06900                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 9.0000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.83                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.93                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 93.5                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.38700                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.900                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 41.23                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.11                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 15.0 % (V/V) GLYCEROL, 25.5 % (W/V)      
REMARK 280  POLYETHYLENE GLYCOL 4000, 0.17 MOL/L SODIUM ACETATE AND 0.085       
REMARK 280  MOL/L TRIS-HCL PH 8.5, TEMPERATURE 291K, VAPOR DIFFUSION,           
REMARK 280  HANGING DROP, PH 8.50                                               
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1                              
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,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                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 5680 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 14360 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -58.0 KCAL/MOL                        
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 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     ALA A     2                                                      
REMARK 465     MET B     1                                                      
REMARK 465     ALA B     2                                                      
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     GLU A 104    CG   CD   OE1  OE2                                  
REMARK 470     LYS A 107    CG   CD   CE   NZ                                   
REMARK 470     ASP B   3    CG   OD1  OD2                                       
REMARK 470     GLN B   7    CG   CD   OE1  NE2                                  
REMARK 470     GLU B 104    OE1  OE2                                            
REMARK 470     LYS B 107    CG   CD   CE   NZ                                   
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   O    GLY B    23     O    HOH B   790              2.14            
REMARK 500   OE2  GLU A   180     O    HOH A   665              2.16            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A   776     O    HOH B   736     1565     2.15            
REMARK 500   O    HOH A   779     O    HOH B   729     1465     2.16            
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    ASP A 128   CB  -  CG  -  OD1 ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    LEU A 129   CA  -  CB  -  CG  ANGL. DEV. =  15.2 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    GLU A 104     -129.59     56.21                                   
REMARK 500    ALA A 131     -104.21   -115.83                                   
REMARK 500    GLU B 104     -121.63     55.68                                   
REMARK 500    ALA B 131     -100.51   -110.89                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600  HETEROGEN                                                           
REMARK 600 HOH 510 TO HOH 515 ARE ASSOCIATED WITH ADENINE 508 AND HOH           
REMARK 600 516 TO HOH 521 ARE ASSOCIATED WITH ADENINE 509.                      
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 500  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 PRP A 502   O2                                                     
REMARK 620 2 PRP A 502   O3B 100.5                                              
REMARK 620 3 PRP A 502   O3   77.0 177.4                                        
REMARK 620 4 PRP A 502   O1   80.6  92.7  87.5                                  
REMARK 620 5 PO4 A 504   O4   91.1   9.8 167.6  94.0                            
REMARK 620 6 HSX A 506   O3   58.3 151.9  26.6  67.3 145.4                      
REMARK 620 7 HOH A 662   O   157.8  98.0  84.6  86.4 107.7 100.1                
REMARK 620 8 HOH A 663   O    89.0  91.7  87.6 169.2  88.8 105.0 102.7          
REMARK 620 N                    1     2     3     4     5     6     7           
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG B 501  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 PO4 A 505   O4                                                     
REMARK 620 2 PRP B 503   O1   88.5                                              
REMARK 620 3 PRP B 503   O2  100.7  83.4                                        
REMARK 620 4 PRP B 503   O3  172.9  85.4  82.2                                  
REMARK 620 5 PRP B 503   O3B   5.1  93.2 103.3 174.2                            
REMARK 620 6 HSX B 507   O1   98.7  15.7  69.9  76.0 103.8                      
REMARK 620 7 HOH B 663   O    97.8  84.6 157.6  78.1  96.1  94.9                
REMARK 620 8 HOH B 664   O    96.6 169.8  87.0  90.0  92.3 154.2 103.4          
REMARK 620 N                    1     2     3     4     5     6     7           
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1ORE   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF HUMAN ADENINE PHOSPHORIBOSYLTRANSFERASE                 
REMARK 900 RELATED ID: 1ZN8   RELATED DB: PDB                                   
REMARK 900 SAME PROTEIN COMPLEXED WITH AMP, IN SPACE GROUP P1 AT 1.76 A         
REMARK 900 RESOLUTION                                                           
REMARK 900 RELATED ID: 1ZN9   RELATED DB: PDB                                   
REMARK 900 SAME PROTEIN IN APO AND AMP COMPLEXED FORMS                          
DBREF  1ZN7 A    1   180  UNP    P07741   APT_HUMAN        1    179             
DBREF  1ZN7 B    1   180  UNP    P07741   APT_HUMAN        1    179             
SEQRES   1 A  180  MET ALA ASP SER GLU LEU GLN LEU VAL GLU GLN ARG ILE          
SEQRES   2 A  180  ARG SER PHE PRO ASP PHE PRO THR PRO GLY VAL VAL PHE          
SEQRES   3 A  180  ARG ASP ILE SER PRO VAL LEU LYS ASP PRO ALA SER PHE          
SEQRES   4 A  180  ARG ALA ALA ILE GLY LEU LEU ALA ARG HIS LEU LYS ALA          
SEQRES   5 A  180  THR HIS GLY GLY ARG ILE ASP TYR ILE ALA GLY LEU ASP          
SEQRES   6 A  180  SER ARG GLY PHE LEU PHE GLY PRO SER LEU ALA GLN GLU          
SEQRES   7 A  180  LEU GLY LEU GLY CYS VAL LEU ILE ARG LYS ARG GLY LYS          
SEQRES   8 A  180  LEU PRO GLY PRO THR LEU TRP ALA SER TYR SER LEU GLU          
SEQRES   9 A  180  TYR GLY LYS ALA GLU LEU GLU ILE GLN LYS ASP ALA LEU          
SEQRES  10 A  180  GLU PRO GLY GLN ARG VAL VAL VAL VAL ASP ASP LEU LEU          
SEQRES  11 A  180  ALA THR GLY GLY THR MET ASN ALA ALA CYS GLU LEU LEU          
SEQRES  12 A  180  GLY ARG LEU GLN ALA GLU VAL LEU GLU CYS VAL SER LEU          
SEQRES  13 A  180  VAL GLU LEU THR SER LEU LYS GLY ARG GLU LYS LEU ALA          
SEQRES  14 A  180  PRO VAL PRO PHE PHE SER LEU LEU GLN TYR GLU                  
SEQRES   1 B  180  MET ALA ASP SER GLU LEU GLN LEU VAL GLU GLN ARG ILE          
SEQRES   2 B  180  ARG SER PHE PRO ASP PHE PRO THR PRO GLY VAL VAL PHE          
SEQRES   3 B  180  ARG ASP ILE SER PRO VAL LEU LYS ASP PRO ALA SER PHE          
SEQRES   4 B  180  ARG ALA ALA ILE GLY LEU LEU ALA ARG HIS LEU LYS ALA          
SEQRES   5 B  180  THR HIS GLY GLY ARG ILE ASP TYR ILE ALA GLY LEU ASP          
SEQRES   6 B  180  SER ARG GLY PHE LEU PHE GLY PRO SER LEU ALA GLN GLU          
SEQRES   7 B  180  LEU GLY LEU GLY CYS VAL LEU ILE ARG LYS ARG GLY LYS          
SEQRES   8 B  180  LEU PRO GLY PRO THR LEU TRP ALA SER TYR SER LEU GLU          
SEQRES   9 B  180  TYR GLY LYS ALA GLU LEU GLU ILE GLN LYS ASP ALA LEU          
SEQRES  10 B  180  GLU PRO GLY GLN ARG VAL VAL VAL VAL ASP ASP LEU LEU          
SEQRES  11 B  180  ALA THR GLY GLY THR MET ASN ALA ALA CYS GLU LEU LEU          
SEQRES  12 B  180  GLY ARG LEU GLN ALA GLU VAL LEU GLU CYS VAL SER LEU          
SEQRES  13 B  180  VAL GLU LEU THR SER LEU LYS GLY ARG GLU LYS LEU ALA          
SEQRES  14 B  180  PRO VAL PRO PHE PHE SER LEU LEU GLN TYR GLU                  
HET     MG  A 500       1                                                       
HET    PO4  A 504       5                                                       
HET    PO4  A 505       5                                                       
HET    PRP  A 502      22                                                       
HET    HSX  A 506      14                                                       
HET    ADE  A 655      10                                                       
HET     MG  B 501       1                                                       
HET    PRP  B 503      22                                                       
HET    HSX  B 507      14                                                       
HET    ADE  B 656      10                                                       
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     PO4 PHOSPHATE ION                                                    
HETNAM     PRP 1-O-PYROPHOSPHONO-5-O-PHOSPHONO-ALPHA-D-RIBOFURANOSE             
HETNAM     HSX 5-O-PHOSPHONO-ALPHA-D-RIBOFURANOSE                               
HETNAM     ADE ADENINE                                                          
HETSYN     PRP ALPHA-PHOSPHORIBOSYLPYROPHOSPHORIC ACID; 1-O-                    
HETSYN   2 PRP  PYROPHOSPHONO-5-O-PHOSPHONO-ALPHA-D-RIBOSE; 1-O-                
HETSYN   3 PRP  PYROPHOSPHONO-5-O-PHOSPHONO-D-RIBOSE; 1-O-                      
HETSYN   4 PRP  PYROPHOSPHONO-5-O-PHOSPHONO-RIBOSE                              
HETSYN     HSX 5-O-PHOSPHONO-ALPHA-D-RIBOSE; 5-O-PHOSPHONO-D-RIBOSE;            
HETSYN   2 HSX  5-O-PHOSPHONO-RIBOSE                                            
FORMUL   3   MG    2(MG 2+)                                                     
FORMUL   4  PO4    2(O4 P 3-)                                                   
FORMUL   6  PRP    2(C5 H13 O14 P3)                                             
FORMUL   7  HSX    2(C5 H11 O8 P)                                               
FORMUL   8  ADE    2(C5 H5 N5)                                                  
FORMUL  13  HOH   *367(H2 O)                                                    
HELIX    1   1 ASP A    3  GLN A   11  1                                   9    
HELIX    2   2 ILE A   29  ASP A   35  1                                   7    
HELIX    3   3 ASP A   35  GLY A   55  1                                  21    
HELIX    4   4 SER A   66  LEU A   70  5                                   5    
HELIX    5   5 PHE A   71  GLY A   80  1                                  10    
HELIX    6   6 GLY A  133  LEU A  146  1                                  14    
HELIX    7   7 LYS A  163  ALA A  169  1                                   7    
HELIX    8   8 SER B    4  GLN B   11  1                                   8    
HELIX    9   9 ILE B   29  ASP B   35  1                                   7    
HELIX   10  10 ASP B   35  GLY B   55  1                                  21    
HELIX   11  11 GLY B   56  ILE B   58  5                                   3    
HELIX   12  12 SER B   66  LEU B   70  5                                   5    
HELIX   13  13 PHE B   71  GLY B   80  1                                  10    
HELIX   14  14 GLY B  133  LEU B  146  1                                  14    
HELIX   15  15 LYS B  163  ALA B  169  1                                   7    
SHEET    1   A 2 ARG A  14  PRO A  17  0                                        
SHEET    2   A 2 VAL A  25  ASP A  28 -1  O  ASP A  28   N  ARG A  14           
SHEET    1   B 7 THR A  96  LEU A 103  0                                        
SHEET    2   B 7 GLY A 106  GLN A 113 -1  O  LEU A 110   N  ALA A  99           
SHEET    3   B 7 GLY A  82  LYS A  88 -1  N  ARG A  87   O  GLU A 111           
SHEET    4   B 7 TYR A  60  LEU A  64  1  N  ILE A  61   O  VAL A  84           
SHEET    5   B 7 ARG A 122  LEU A 130  1  O  VAL A 126   N  ALA A  62           
SHEET    6   B 7 GLU A 149  LEU A 159  1  O  GLU A 149   N  VAL A 123           
SHEET    7   B 7 PHE A 173  TYR A 179  1  O  TYR A 179   N  GLU A 158           
SHEET    1   C 2 ARG B  14  PRO B  17  0                                        
SHEET    2   C 2 VAL B  25  ASP B  28 -1  O  ASP B  28   N  ARG B  14           
SHEET    1   D 7 THR B  96  LEU B 103  0                                        
SHEET    2   D 7 GLY B 106  GLN B 113 -1  O  GLY B 106   N  LEU B 103           
SHEET    3   D 7 GLY B  82  LYS B  88 -1  N  ARG B  87   O  GLU B 111           
SHEET    4   D 7 TYR B  60  LEU B  64  1  N  ILE B  61   O  VAL B  84           
SHEET    5   D 7 ARG B 122  LEU B 130  1  O  VAL B 126   N  ALA B  62           
SHEET    6   D 7 GLU B 149  LEU B 159  1  O  GLU B 149   N  VAL B 123           
SHEET    7   D 7 PHE B 173  TYR B 179  1  O  TYR B 179   N  GLU B 158           
LINK        MG    MG A 500                 O2 APRP A 502     1555   1555  2.26  
LINK        MG    MG A 500                 O3BAPRP A 502     1555   1555  2.13  
LINK        MG    MG A 500                 O3 APRP A 502     1555   1555  2.16  
LINK        MG    MG A 500                 O1 APRP A 502     1555   1555  2.16  
LINK        MG    MG A 500                 O4 BPO4 A 504     1555   1555  1.91  
LINK        MG    MG A 500                 O3 BHSX A 506     1555   1555  2.26  
LINK        MG    MG A 500                 O   HOH A 662     1555   1555  2.02  
LINK        MG    MG A 500                 O   HOH A 663     1555   1555  2.16  
LINK         O4 BPO4 A 505                MG    MG B 501     1555   1555  1.94  
LINK        MG    MG B 501                 O1 APRP B 503     1555   1555  2.13  
LINK        MG    MG B 501                 O2 APRP B 503     1555   1555  2.06  
LINK        MG    MG B 501                 O3 APRP B 503     1555   1555  2.13  
LINK        MG    MG B 501                 O3BAPRP B 503     1555   1555  1.86  
LINK        MG    MG B 501                 O1 BHSX B 507     1555   1555  2.38  
LINK        MG    MG B 501                 O   HOH B 663     1555   1555  2.12  
LINK        MG    MG B 501                 O   HOH B 664     1555   1555  2.07  
CISPEP   1 PHE A   19    PRO A   20          0        -1.58                     
CISPEP   2 ASP A   65    SER A   66          0        -0.48                     
CISPEP   3 ALA A  169    PRO A  170          0        13.99                     
CISPEP   4 PHE B   19    PRO B   20          0        -1.56                     
CISPEP   5 ASP B   65    SER B   66          0        -0.01                     
CISPEP   6 ALA B  169    PRO B  170          0        12.58                     
CRYST1   47.019   47.267   47.522  76.59  69.26  61.89 P 1           2          
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      0.021268 -0.011361 -0.007180        0.00000                         
SCALE2      0.000000  0.023986 -0.001898        0.00000                         
SCALE3      0.000000  0.000000  0.022571        0.00000