PDB Short entry for 1ZN9
HEADER    TRANSFERASE                             11-MAY-05   1ZN9              
TITLE     HUMAN ADENINE PHOSPHORIBOSYLTRANSFERASE IN APO AND AMP COMPLEXED FORMS
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   5   14-FEB-24 1ZN9    1       REMARK                                   
REVDAT   4   13-JUL-11 1ZN9    1       VERSN                                    
REVDAT   3   24-FEB-09 1ZN9    1       VERSN                                    
REVDAT   2   29-APR-08 1ZN9    1       JRNL                                     
REVDAT   1   25-APR-06 1ZN9    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.    2.05 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0005                                      
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) : 2.05                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 28.52                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 94.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 19146                          
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) : 0.154                           
REMARK   3   R VALUE            (WORKING SET) : 0.151                           
REMARK   3   FREE R VALUE                     : 0.225                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1032                            
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) : 2.05                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.10                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1217                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 83.20                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.1750                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 61                           
REMARK   3   BIN FREE R VALUE                    : 0.2830                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2733                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 23                                      
REMARK   3   SOLVENT ATOMS            : 273                                     
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) : 27.08                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.15000                                             
REMARK   3    B22 (A**2) : 0.24000                                              
REMARK   3    B33 (A**2) : -0.09000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.218         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.193         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.122         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 8.512         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.963                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.916                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2890 ; 0.017 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  2794 ; 0.002 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  3925 ; 1.793 ; 2.017       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  6495 ; 0.965 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   356 ; 6.526 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   122 ;35.104 ;23.689       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   514 ;16.617 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    24 ;20.205 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   462 ; 0.107 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  3143 ; 0.007 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   562 ; 0.001 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   555 ; 0.200 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  2734 ; 0.181 ; 0.200       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  1309 ; 0.169 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  1793 ; 0.087 ; 0.200       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   217 ; 0.196 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):     1 ; 0.003 ; 0.200       
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):    15 ; 0.220 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):   100 ; 0.300 ; 0.200       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    19 ; 0.277 ; 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):  1977 ; 1.007 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   732 ; 0.233 ; 1.500       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2903 ; 1.455 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1178 ; 2.338 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1022 ; 3.404 ; 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 : 3                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A     2        A   180                          
REMARK   3    RESIDUE RANGE :   B     2        B   180                          
REMARK   3    RESIDUE RANGE :   B  1031        B  1031                          
REMARK   3    ORIGIN FOR THE GROUP (A):  11.9150   7.0600  51.1720              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:  -0.1849 T22:  -0.1351                                     
REMARK   3      T33:  -0.2042 T12:  -0.0119                                     
REMARK   3      T13:  -0.0068 T23:  -0.0015                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   0.8255 L22:   0.8456                                     
REMARK   3      L33:   0.7721 L12:  -0.1874                                     
REMARK   3      L13:  -0.1885 L23:  -0.0208                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0322 S12:  -0.0412 S13:   0.0201                       
REMARK   3      S21:   0.0820 S22:  -0.0008 S23:  -0.0241                       
REMARK   3      S31:  -0.0100 S32:   0.0689 S33:   0.0330                       
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 1ZN9 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-JUN-05.                  
REMARK 100 THE DEPOSITION ID IS D_1000032920.                                   
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                             : 8.5                                
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   : 20179                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.050                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 28.520                             
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                              
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   (%): 39.93                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.06                     
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 291K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
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       23.75550            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       70.05250            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       24.62600            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       70.05250            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       23.75550            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       24.62600            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: 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     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     LYS A 107    CE   NZ                                             
REMARK 470     GLU B 104    CG   CD   OE1  OE2                                  
REMARK 470     TYR B 105    CG   CD1  CD2  CE1  CE2  CZ   OH                    
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   OE2  GLU A     5     O    HOH A   333              2.16            
REMARK 500   O3'  AMP B  1031     O    HOH B  1084              2.17            
REMARK 500   OE1  GLU B   111     O    HOH B  1120              2.19            
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   NH1  ARG A    57     O    HOH B  1121     1545     2.11            
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    ARG A  89   NE  -  CZ  -  NH1 ANGL. DEV. =   4.5 DEGREES          
REMARK 500    ARG A  89   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.4 DEGREES          
REMARK 500    LEU B 110   CA  -  CB  -  CG  ANGL. DEV. =  14.4 DEGREES          
REMARK 500    ASP B 128   CB  -  CG  -  OD1 ANGL. DEV. =   5.9 DEGREES          
REMARK 500    MET B 136   CG  -  SD  -  CE  ANGL. DEV. =  -9.9 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASP A   3      -95.36    175.60                                   
REMARK 500    GLU A 104     -113.48     47.93                                   
REMARK 500    ALA A 131     -103.35   -107.93                                   
REMARK 500    ASP B   3      -88.33    -13.70                                   
REMARK 500    GLU B 104       94.24    -64.99                                   
REMARK 500    TYR B 105      111.73     66.37                                   
REMARK 500    ALA B 131     -106.64   -105.84                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP B 1031                
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: 1ZN8   RELATED DB: PDB                                   
REMARK 900 SAME PROTEIN COMPLEXED WITH AMP, IN SPACE GROUP P1 AT 1.76 A         
REMARK 900 RESOLUTION                                                           
DBREF  1ZN9 A    1   180  UNP    P07741   APT_HUMAN        1    179             
DBREF  1ZN9 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    AMP  B1031      23                                                       
HETNAM     AMP ADENOSINE MONOPHOSPHATE                                          
FORMUL   3  AMP    C10 H14 N5 O7 P                                              
FORMUL   4  HOH   *273(H2 O)                                                    
HELIX    1   1 SER A    4  ARG A   12  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 ALA B    2  GLN B   11  1                                  10    
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 SER B   66  LEU B   70  5                                   5    
HELIX   12  12 PHE B   71  GLY B   80  1                                  10    
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  ALA A 108   N  TYR A 101           
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 124   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  SER B 102  0                                        
SHEET    2   D 7 LYS B 107  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  VAL B 126  1  O  VAL B 126   N  ALA B  62           
SHEET    6   D 7 GLU B 149  LEU B 159  1  O  VAL B 154   N  VAL B 125           
SHEET    7   D 7 LEU B 129  LEU B 130  1  N  LEU B 130   O  LEU B 159           
SHEET    1   E 7 THR B  96  SER B 102  0                                        
SHEET    2   E 7 LYS B 107  GLN B 113 -1  O  ALA B 108   N  TYR B 101           
SHEET    3   E 7 GLY B  82  LYS B  88 -1  N  ARG B  87   O  GLU B 111           
SHEET    4   E 7 TYR B  60  LEU B  64  1  N  ILE B  61   O  VAL B  84           
SHEET    5   E 7 ARG B 122  VAL B 126  1  O  VAL B 126   N  ALA B  62           
SHEET    6   E 7 GLU B 149  LEU B 159  1  O  VAL B 154   N  VAL B 125           
SHEET    7   E 7 PHE B 173  TYR B 179  1  O  LEU B 177   N  LEU B 156           
CISPEP   1 PHE A   19    PRO A   20          0        -0.36                     
CISPEP   2 ASP A   65    SER A   66          0         0.25                     
CISPEP   3 ALA A  169    PRO A  170          0         6.62                     
CISPEP   4 PHE B   19    PRO B   20          0         4.98                     
CISPEP   5 ASP B   65    SER B   66          0        -7.63                     
CISPEP   6 ALA B  169    PRO B  170          0         4.19                     
SITE     1 AC1 18 VAL B  25  PHE B  26  ARG B  27  ARG B  67                    
SITE     2 AC1 18 ASP B 127  ASP B 128  LEU B 129  ALA B 131                    
SITE     3 AC1 18 THR B 132  GLY B 133  GLY B 134  THR B 135                    
SITE     4 AC1 18 LEU B 159  HOH B1036  HOH B1084  HOH B1106                    
SITE     5 AC1 18 HOH B1116  HOH B1136                                          
CRYST1   47.511   49.252  140.105  90.00  90.00  90.00 P 21 21 21    8          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.021048  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.020304  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.007138        0.00000