PDB Short entry for 1ZN8
HEADER    TRANSFERASE                             11-MAY-05   1ZN8              
TITLE     HUMAN ADENINE PHOSPHORIBOSYLTRANSFERASE COMPLEXED WITH AMP, IN SPACE  
TITLE    2 GROUP P1 AT 1.76 A RESOLUTION                                        
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    GLYCOSYLTRANSFERASE, PURINE SALVAGE, TRANSFERASE                      
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.IULEK,M.SILVA,C.H.T.P.TOMICH,O.H.THIEMANN                           
REVDAT   4   13-JUL-11 1ZN8    1       VERSN                                    
REVDAT   3   24-FEB-09 1ZN8    1       VERSN                                    
REVDAT   2   29-APR-08 1ZN8    1       JRNL                                     
REVDAT   1   25-APR-06 1ZN8    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.    1.76 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0005                                      
REMARK   3   AUTHORS     : MURSHUDOV,VAGIN,DODSON                               
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.76                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 44.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 95.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 30208                          
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) : 0.160                           
REMARK   3   R VALUE            (WORKING SET) : 0.157                           
REMARK   3   FREE R VALUE                     : 0.211                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1629                            
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) : 1.76                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.81                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1683                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 72.22                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2200                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 93                           
REMARK   3   BIN FREE R VALUE                    : 0.2880                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2717                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 47                                      
REMARK   3   SOLVENT ATOMS            : 355                                     
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) : 17.51                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.48000                                             
REMARK   3    B22 (A**2) : -0.37000                                             
REMARK   3    B33 (A**2) : 0.31000                                              
REMARK   3    B12 (A**2) : 0.96000                                              
REMARK   3    B13 (A**2) : -0.34000                                             
REMARK   3    B23 (A**2) : -0.24000                                             
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.123         
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): 5.533         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.967                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.939                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2919 ; 0.020 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  2801 ; 0.007 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  3966 ; 1.932 ; 2.025       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  6499 ; 0.962 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   355 ; 6.317 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   123 ;30.747 ;23.252       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   512 ;15.397 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    26 ;22.271 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   459 ; 0.133 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  3165 ; 0.007 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   584 ; 0.001 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   561 ; 0.214 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  2792 ; 0.203 ; 0.200       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  1362 ; 0.180 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  1732 ; 0.088 ; 0.200       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   282 ; 0.230 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    30 ; 0.284 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):    92 ; 0.295 ; 0.200       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    29 ; 0.219 ; 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):  1930 ; 1.467 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   730 ; 0.300 ; 1.500       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2893 ; 1.607 ; 2.000       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1229 ; 2.758 ; 3.000       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1073 ; 4.006 ; 4.500       
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  : 2                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 2                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A     3        A   180                          
REMARK   3    RESIDUE RANGE :   A  1031        A  1031                          
REMARK   3    ORIGIN FOR THE GROUP (A):  27.5188   7.9195   6.7282              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.0294 T22:  -0.0271                                     
REMARK   3      T33:  -0.0220 T12:  -0.0155                                     
REMARK   3      T13:  -0.0025 T23:   0.0017                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.1542 L22:   0.6432                                     
REMARK   3      L33:   0.5324 L12:  -0.5825                                     
REMARK   3      L13:   0.1045 L23:   0.1305                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0486 S12:  -0.0451 S13:   0.1186                       
REMARK   3      S21:   0.0422 S22:   0.0546 S23:  -0.0610                       
REMARK   3      S31:  -0.0209 S32:   0.0185 S33:  -0.0060                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 2                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   B     2        B   180                          
REMARK   3    RESIDUE RANGE :   B  1032        B  1032                          
REMARK   3    ORIGIN FOR THE GROUP (A):  19.5023  -7.4347  -7.4523              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.0266 T22:  -0.0123                                     
REMARK   3      T33:  -0.0306 T12:  -0.0058                                     
REMARK   3      T13:  -0.0070 T23:   0.0031                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.2066 L22:   0.5605                                     
REMARK   3      L33:   0.7070 L12:  -0.6356                                     
REMARK   3      L13:   0.0389 L23:   0.0693                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0890 S12:   0.1627 S13:  -0.0643                       
REMARK   3      S21:  -0.0589 S22:  -0.0870 S23:   0.0620                       
REMARK   3      S31:  -0.0053 S32:   0.0149 S33:  -0.0021                       
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 1ZN8 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 31-MAY-05.                  
REMARK 100 THE RCSB ID CODE IS RCSB032919.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL; NULL                         
REMARK 200  TEMPERATURE           (KELVIN) : NULL; NULL                         
REMARK 200  PH                             : 8.50                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N; Y                               
REMARK 200  RADIATION SOURCE               : ROTATING ANODE; LNLS               
REMARK 200  BEAMLINE                       : NULL; D03B-MX1                     
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU; NULL                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M; NULL                            
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418; 1.4538                     
REMARK 200  MONOCHROMATOR                  : NULL; NULL                         
REMARK 200  OPTICS                         : NULL; NULL                         
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE; NULL                  
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH; NULL                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 31837                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.760                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 44.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH; NULL                        
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   (%): 42.91                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.17                     
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 , VAPOR DIFFUSION, HANGING DROP,              
REMARK 280  TEMPERATURE 291 K, 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 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 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     GLN A   7    CD   OE1  NE2                                       
REMARK 470     ARG A  40    NE   CZ   NH1  NH2                                  
REMARK 470     LYS A  91    CE   NZ                                             
REMARK 470     GLU A 104    CD   OE1  OE2                                       
REMARK 470     LYS A 107    CE   NZ                                             
REMARK 470     GLN B   7    CD   OE1  NE2                                       
REMARK 470     ARG B  40    NE   CZ   NH1  NH2                                  
REMARK 470     LYS B  91    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   OE1  GLU A   180     O    HOH A  1038              2.02            
REMARK 500   OE2  GLU A   118     O    HOH A  1039              2.05            
REMARK 500   O    HOH B  1102     O    HOH B  1168              2.12            
REMARK 500   O    THR A    53     O    HOH A  1152              2.15            
REMARK 500   O    HOH B  1080     O    HOH B  1170              2.15            
REMARK 500   O    HOH B  1141     O    HOH B  1201              2.15            
REMARK 500   NE   ARG B    57     O    HOH B  1126              2.17            
REMARK 500   OD2  ASP A   128     O    HOH A  1158              2.19            
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 A 129   CA  -  CB  -  CG  ANGL. DEV. =  18.3 DEGREES          
REMARK 500    LEU A 162   CB  -  CG  -  CD1 ANGL. DEV. =  10.2 DEGREES          
REMARK 500    LEU B 129   CA  -  CB  -  CG  ANGL. DEV. =  17.4 DEGREES          
REMARK 500    LEU B 129   CB  -  CG  -  CD1 ANGL. DEV. =  14.5 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     -123.92     56.22                                   
REMARK 500    ALA A 131     -101.76   -117.93                                   
REMARK 500    GLU B 104     -113.13     47.26                                   
REMARK 500    ALA B 131     -100.17   -117.01                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH B1193        DISTANCE =  5.28 ANGSTROMS                       
REMARK 525    HOH B1205        DISTANCE =  5.20 ANGSTROMS                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL B 1030                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP A 1031                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP B 1032                
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: 1ZN7   RELATED DB: PDB                                   
REMARK 900 SAME PROTEIN COMPLEXED WITH PRPP, ADE AND R5P                        
REMARK 900 RELATED ID: 1ZN9   RELATED DB: PDB                                   
REMARK 900 SAME PROTEIN IN APO AND AMP COMPLEXED FORMS                          
DBREF  1ZN8 A    2   180  UNP    P07741   APT_HUMAN        1    179             
DBREF  1ZN8 B    2   180  UNP    P07741   APT_HUMAN        1    179             
SEQADV 1ZN8 MET A    1  UNP  P07741              CLONING ARTIFACT               
SEQADV 1ZN8 MET B    1  UNP  P07741              CLONING ARTIFACT               
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     CL  B1030       1                                                       
HET    AMP  A1031      23                                                       
HET    AMP  B1032      23                                                       
HETNAM      CL CHLORIDE ION                                                     
HETNAM     AMP ADENOSINE MONOPHOSPHATE                                          
FORMUL   3   CL    CL 1-                                                        
FORMUL   4  AMP    2(C10 H14 N5 O7 P)                                           
FORMUL   6  HOH   *355(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 ARG A   67  GLY A   80  1                                  14    
HELIX    5   5 GLY A  133  LEU A  146  1                                  14    
HELIX    6   6 LYS A  163  ALA A  169  1                                   7    
HELIX    7   7 ASP B    3  GLN B   11  1                                   9    
HELIX    8   8 ILE B   29  ASP B   35  1                                   7    
HELIX    9   9 ASP B   35  GLY B   55  1                                  21    
HELIX   10  10 SER B   66  LEU B   70  5                                   5    
HELIX   11  11 PHE B   71  GLY B   80  1                                  10    
HELIX   12  12 ASP B  115  LEU B  117  5                                   3    
HELIX   13  13 GLY B  133  LEU B  146  1                                  14    
HELIX   14  14 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  VAL A 154   N  VAL A 125           
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  ALA B 108   N  TYR B 101           
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 124   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           
CISPEP   1 PHE A   19    PRO A   20          0         4.42                     
CISPEP   2 ASP A   65    SER A   66          0         4.45                     
CISPEP   3 ALA A  169    PRO A  170          0        15.49                     
CISPEP   4 PHE B   19    PRO B   20          0        -0.81                     
CISPEP   5 ASP B   65    SER B   66          0        -4.49                     
CISPEP   6 ALA B  169    PRO B  170          0        11.40                     
SITE     1 AC1  3 TRP B  98  ARG B 145  HOH B1211                               
SITE     1 AC2 20 VAL A  25  PHE A  26  ARG A  27  ARG A  67                    
SITE     2 AC2 20 ASP A 127  ASP A 128  LEU A 129  ALA A 131                    
SITE     3 AC2 20 THR A 132  GLY A 133  GLY A 134  THR A 135                    
SITE     4 AC2 20 LEU A 159  HOH A1032  HOH A1033  HOH A1034                    
SITE     5 AC2 20 HOH A1061  HOH A1093  HOH A1114  HOH A1158                    
SITE     1 AC3 17 VAL B  25  PHE B  26  ARG B  27  ARG B  67                    
SITE     2 AC3 17 ASP B 127  ASP B 128  ALA B 131  THR B 132                    
SITE     3 AC3 17 GLY B 133  GLY B 134  THR B 135  LEU B 159                    
SITE     4 AC3 17 HOH B1033  HOH B1034  HOH B1068  HOH B1084                    
SITE     5 AC3 17 HOH B1127                                                     
CRYST1   47.060   47.470   47.840  75.41  68.42  61.49 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      0.021249 -0.011542 -0.007358        0.00000                         
SCALE2      0.000000  0.023973 -0.002250        0.00000                         
SCALE3      0.000000  0.000000  0.022577        0.00000