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Database: PDB
Entry: 4QJC
LinkDB: 4QJC
Original site: 4QJC 
HEADER    OXIDOREDUCTASE/OXIDOREDUCTASE INHIBITOR 03-JUN-14   4QJC              
TITLE     HUMAN DIHYDROFOLATE REDUCTASE TERNARY COMPLEX WITH NADPH AND INHIBITOR
TITLE    2 26 (N~6~-METHYL-N~6~-(3,4,5-TRIFLUOROPHENYL)PYRIDO[2,3-D]PYRIMIDINE- 
TITLE    3 2,4,6-TRIAMINE)                                                      
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: DIHYDROFOLATE REDUCTASE;                                   
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: HUMAN DIHYDROFOLATE REDUCTASE;                             
COMPND   5 EC: 1.5.1.3;                                                         
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: DHFR;                                                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: PDS5(DE3);                                 
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET-SUMO-HDHFR                            
KEYWDS    DIHYDROFOLATE REDUCTASE, INHIBITOR BINDING, ROSSMAN FOLD, HYDROLASE,  
KEYWDS   2 COFACTOR, OXIDOREDUCTASE-OXIDOREDUCTASE INHIBITOR COMPLEX            
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    V.CODY                                                                
REVDAT   3   22-NOV-17 4QJC    1       REMARK                                   
REVDAT   2   01-JUL-15 4QJC    1       JRNL                                     
REVDAT   1   10-JUN-15 4QJC    0                                                
JRNL        AUTH   V.CODY,J.PACE,O.A.NAMJOSHI,A.GANGJEE                         
JRNL        TITL   STRUCTURE-ACTIVITY CORRELATIONS FOR THREE                    
JRNL        TITL 2 PYRIDO[2,3-D]PYRIMIDINE ANTIFOLATES BINDING TO HUMAN AND     
JRNL        TITL 3 PNEUMOCYSTIS CARINII DIHYDROFOLATE REDUCTASE.                
JRNL        REF    ACTA CRYSTALLOGR F STRUCT     V.  71   799 2015              
JRNL        REF  2 BIOL COMMUN                                                  
JRNL        REFN                   ESSN 1744-3091                               
JRNL        PMID   26057816                                                     
JRNL        DOI    10.1107/S2053230X15008468                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.62 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.6.0117                                      
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) : 1.62                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 34.37                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 98.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 24614                          
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) : 0.185                           
REMARK   3   R VALUE            (WORKING SET) : 0.183                           
REMARK   3   FREE R VALUE                     : 0.218                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1319                            
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) : 1.62                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.66                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1808                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 83.00                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2780                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 105                          
REMARK   3   BIN FREE R VALUE                    : 0.3370                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1502                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 71                                      
REMARK   3   SOLVENT ATOMS            : 105                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 27.90                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 23.25                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.00000                                              
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : 0.00000                                              
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): 0.093         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.094         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.066         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.932         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.965                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.955                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1614 ; 0.026 ; 0.020       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2192 ; 2.524 ; 2.035       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   185 ; 6.832 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    71 ;36.530 ;24.789       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   286 ;14.744 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):     8 ;16.707 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   233 ; 0.184 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1209 ; 0.015 ; 0.021       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
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):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
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):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
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  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN USED IF PRESENT IN    
REMARK   3  THE INPUT                                                           
REMARK   4                                                                      
REMARK   4 4QJC COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-JUN-14.                  
REMARK 100 THE DEPOSITION ID IS D_1000086127.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 02-JUN-13                          
REMARK 200  TEMPERATURE           (KELVIN) : 113                                
REMARK 200  PH                             : 6.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL11-1                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.975                              
REMARK 200  MONOCHROMATOR                  : GRAPHITE                           
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : PIXEL                              
REMARK 200  DETECTOR MANUFACTURER          : PSI PILATUS 6M                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XDS, SCALEPACK                     
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 29910                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.530                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 34.400                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.3                               
REMARK 200  DATA REDUNDANCY                : 3.300                              
REMARK 200  R MERGE                    (I) : 0.06200                            
REMARK 200  R SYM                      (I) : 0.03900                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 10.2000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.54                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.62                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 83.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.75000                            
REMARK 200  R SYM FOR SHELL            (I) : 0.92000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: 1U72                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 50.90                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.51                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 30% AMSO4, 3% V/V ETOH, PH 6.0, VAPOR    
REMARK 280  DIFFUSION, HANGING DROP, TEMPERATURE 287K                           
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3                              
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z                                                
REMARK 290       3555   -X+Y,-X,Z                                               
REMARK 290       4555   X+2/3,Y+1/3,Z+1/3                                       
REMARK 290       5555   -Y+2/3,X-Y+1/3,Z+1/3                                    
REMARK 290       6555   -X+Y+2/3,-X+1/3,Z+1/3                                   
REMARK 290       7555   X+1/3,Y+2/3,Z+2/3                                       
REMARK 290       8555   -Y+1/3,X-Y+2/3,Z+2/3                                    
REMARK 290       9555   -X+Y+1/3,-X+2/3,Z+2/3                                   
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       42.24300            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       24.38901            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       25.95733            
REMARK 290   SMTRY1   5 -0.500000 -0.866025  0.000000       42.24300            
REMARK 290   SMTRY2   5  0.866025 -0.500000  0.000000       24.38901            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       25.95733            
REMARK 290   SMTRY1   6 -0.500000  0.866025  0.000000       42.24300            
REMARK 290   SMTRY2   6 -0.866025 -0.500000  0.000000       24.38901            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       25.95733            
REMARK 290   SMTRY1   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       48.77801            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       51.91467            
REMARK 290   SMTRY1   8 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   8  0.866025 -0.500000  0.000000       48.77801            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       51.91467            
REMARK 290   SMTRY1   9 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   9 -0.866025 -0.500000  0.000000       48.77801            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       51.91467            
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: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
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 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 110      -94.44    -90.66                                   
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 NDP A 201                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IXE A 202                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 4IXE   RELATED DB: PDB                                   
REMARK 900 PCDHFR-26-NADPH                                                      
REMARK 900 RELATED ID: 4QJZ   RELATED DB: PDB                                   
DBREF  4QJC A    1   186  UNP    P00374   DYR_HUMAN        2    187             
SEQRES   1 A  186  VAL GLY SER LEU ASN CYS ILE VAL ALA VAL SER GLN ASN          
SEQRES   2 A  186  MET GLY ILE GLY LYS ASN GLY ASP LEU PRO TRP PRO PRO          
SEQRES   3 A  186  LEU ARG ASN GLU PHE ARG TYR PHE GLN ARG MET THR THR          
SEQRES   4 A  186  THR SER SER VAL GLU GLY LYS GLN ASN LEU VAL ILE MET          
SEQRES   5 A  186  GLY LYS LYS THR TRP PHE SER ILE PRO GLU LYS ASN ARG          
SEQRES   6 A  186  PRO LEU LYS GLY ARG ILE ASN LEU VAL LEU SER ARG GLU          
SEQRES   7 A  186  LEU LYS GLU PRO PRO GLN GLY ALA HIS PHE LEU SER ARG          
SEQRES   8 A  186  SER LEU ASP ASP ALA LEU LYS LEU THR GLU GLN PRO GLU          
SEQRES   9 A  186  LEU ALA ASN LYS VAL ASP MET VAL TRP ILE VAL GLY GLY          
SEQRES  10 A  186  SER SER VAL TYR LYS GLU ALA MET ASN HIS PRO GLY HIS          
SEQRES  11 A  186  LEU LYS LEU PHE VAL THR ARG ILE MET GLN ASP PHE GLU          
SEQRES  12 A  186  SER ASP THR PHE PHE PRO GLU ILE ASP LEU GLU LYS TYR          
SEQRES  13 A  186  LYS LEU LEU PRO GLU TYR PRO GLY VAL LEU SER ASP VAL          
SEQRES  14 A  186  GLN GLU GLU LYS GLY ILE LYS TYR LYS PHE GLU VAL TYR          
SEQRES  15 A  186  GLU LYS ASN ASP                                              
HET    NDP  A 201      48                                                       
HET    IXE  A 202      23                                                       
HETNAM     NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE                  
HETNAM   2 NDP  PHOSPHATE                                                       
HETNAM     IXE N~6~-METHYL-N~6~-(3,4,5-TRIFLUOROPHENYL)PYRIDO[2,3-              
HETNAM   2 IXE  D]PYRIMIDINE-2,4,6-TRIAMINE                                     
FORMUL   2  NDP    C21 H30 N7 O17 P3                                            
FORMUL   3  IXE    C14 H11 F3 N6                                                
FORMUL   4  HOH   *105(H2 O)                                                    
HELIX    1   1 LEU A   27  THR A   40  1                                  14    
HELIX    2   2 LYS A   54  ILE A   60  1                                   7    
HELIX    3   3 PRO A   61  ARG A   65  5                                   5    
HELIX    4   4 SER A   92  GLN A  102  1                                  11    
HELIX    5   5 SER A  118  ASN A  126  1                                   9    
SHEET    1   A 8 PHE A  88  SER A  90  0                                        
SHEET    2   A 8 ILE A  71  LEU A  75  1  N  VAL A  74   O  PHE A  88           
SHEET    3   A 8 GLN A  47  GLY A  53  1  N  VAL A  50   O  LEU A  73           
SHEET    4   A 8 VAL A 109  ILE A 114  1  O  TRP A 113   N  ILE A  51           
SHEET    5   A 8 LEU A   4  SER A  11  1  N  ASN A   5   O  ILE A 114           
SHEET    6   A 8 HIS A 130  ILE A 138  1  O  PHE A 134   N  CYS A   6           
SHEET    7   A 8 ILE A 175  ASN A 185 -1  O  LYS A 178   N  ARG A 137           
SHEET    8   A 8 LYS A 157  LEU A 158 -1  N  LYS A 157   O  GLU A 183           
SHEET    1   B 8 PHE A  88  SER A  90  0                                        
SHEET    2   B 8 ILE A  71  LEU A  75  1  N  VAL A  74   O  PHE A  88           
SHEET    3   B 8 GLN A  47  GLY A  53  1  N  VAL A  50   O  LEU A  73           
SHEET    4   B 8 VAL A 109  ILE A 114  1  O  TRP A 113   N  ILE A  51           
SHEET    5   B 8 LEU A   4  SER A  11  1  N  ASN A   5   O  ILE A 114           
SHEET    6   B 8 HIS A 130  ILE A 138  1  O  PHE A 134   N  CYS A   6           
SHEET    7   B 8 ILE A 175  ASN A 185 -1  O  LYS A 178   N  ARG A 137           
SHEET    8   B 8 GLN A 170  GLU A 172 -1  N  GLN A 170   O  TYR A 177           
SHEET    1   C 2 GLY A  15  GLY A  17  0                                        
SHEET    2   C 2 THR A 146  PHE A 147 -1  O  THR A 146   N  ILE A  16           
CISPEP   1 ARG A   65    PRO A   66          0         0.96                     
CISPEP   2 GLY A  116    GLY A  117          0         0.06                     
SITE     1 AC1 25 VAL A   8  ALA A   9  ILE A  16  GLY A  20                    
SITE     2 AC1 25 ASP A  21  LEU A  22  GLY A  53  LYS A  54                    
SITE     3 AC1 25 LYS A  55  THR A  56  LEU A  75  SER A  76                    
SITE     4 AC1 25 ARG A  77  GLU A  78  ARG A  91  SER A  92                    
SITE     5 AC1 25 VAL A 115  GLY A 117  SER A 118  SER A 119                    
SITE     6 AC1 25 VAL A 120  TYR A 121  THR A 146  IXE A 202                    
SITE     7 AC1 25 HOH A 323                                                     
SITE     1 AC2 12 ILE A   7  VAL A   8  ALA A   9  ASP A  21                    
SITE     2 AC2 12 LEU A  22  GLU A  30  PHE A  34  SER A  59                    
SITE     3 AC2 12 PRO A  61  TYR A 121  THR A 136  NDP A 201                    
CRYST1   84.486   84.486   77.872  90.00  90.00 120.00 H 3           9          
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      0.011836  0.006834  0.000000        0.00000                         
SCALE2      0.000000  0.013667  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012842        0.00000                         
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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