HEADER    TRANSFERASE(FORMYL)                     15-MAY-92   1CDD              
TITLE     STRUCTURES OF APO AND COMPLEXED ESCHERICHIA COLI GLYCINAMIDE          
TITLE    2 RIBONUCLEOTIDE TRANSFORMYLASE                                        
CAVEAT     1CDD    CHIRALITY ERROR AT CA CENTER IN GLU 212                      
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PHOSPHORIBOSYL-GLYCINAMIDE FORMYLTRANSFERASE;              
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 EC: 2.1.2.2;                                                         
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 EXPRESSION_SYSTEM_STRAIN: K12                                        
KEYWDS    TRANSFERASE(FORMYL)                                                   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    R.J.ALMASSY,C.A.JANSON,C.-C.KAN,Z.HOSTOMSKA                           
REVDAT   4   07-FEB-24 1CDD    1       REMARK                                   
REVDAT   3   24-FEB-09 1CDD    1       VERSN                                    
REVDAT   2   01-APR-03 1CDD    1       JRNL                                     
REVDAT   1   31-OCT-93 1CDD    0                                                
JRNL        AUTH   R.J.ALMASSY,C.A.JANSON,C.C.KAN,Z.HOSTOMSKA                   
JRNL        TITL   STRUCTURES OF APO AND COMPLEXED ESCHERICHIA COLI GLYCINAMIDE 
JRNL        TITL 2 RIBONUCLEOTIDE TRANSFORMYLASE.                               
JRNL        REF    PROC.NATL.ACAD.SCI.USA        V.  89  6114 1992              
JRNL        REFN                   ISSN 0027-8424                               
JRNL        PMID   1631098                                                      
JRNL        DOI    10.1073/PNAS.89.13.6114                                      
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   J.AIMI,H.QIU,J.WILLIAMS,H.ZALKIN,J.E.DIXON                   
REMARK   1  TITL   DE NOVO PURINE NUCLEOTIDE BIOSYNTHESIS: CLONING OF HUMAN AND 
REMARK   1  TITL 2 AVIAN CDNA'S ENCODING THE TRIFUNCTIONAL GLYCINAMIDE          
REMARK   1  TITL 3 RIBONUCLEOTIDE SYNTHETASE-AMINOIMIDAZOLE RIBONUCLEOTIDE      
REMARK   1  TITL 4 SYNTHETASE-GLYCINAMIDE RIBONUCLEOTIDE TRANSFORMYLASE BY      
REMARK   1  TITL 5 FUNCTIONAL COMPLEMENTATION IN E. COLI                        
REMARK   1  REF    NUCLEIC ACIDS RES.            V.  18  6665 1990              
REMARK   1  REFN                   ISSN 0305-1048                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   J.M.SMITH,H.A.DAUM III                                       
REMARK   1  TITL   IDENTIFICATION AND NUCLEOTIDE SEQUENCE OF A GENE ENCODING    
REMARK   1  TITL 2 5'-PHOSPHORIBOSYLGLYCINAMIDE TRANSFORMYLASE IN ESCHERICHIA   
REMARK   1  TITL 3 COLI K12                                                     
REMARK   1  REF    J.BIOL.CHEM.                  V. 262 10565 1987              
REMARK   1  REFN                   ISSN 0021-9258                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PROLSQ                                               
REMARK   3   AUTHORS     : KONNERT,HENDRICKSON                                  
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : NULL                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : NULL                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.225                           
REMARK   3   R VALUE            (WORKING SET) : NULL                            
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL WITH ALL DATA.                               
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : NULL                   
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE                  (NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : NULL                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : NULL                   
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2908                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 10                                      
REMARK   3   SOLVENT ATOMS            : 0                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : 0.020 ; NULL                
REMARK   3    ANGLE DISTANCE                  (A) : 4.100 ; NULL                
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : NULL  ; NULL                
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : NULL  ; NULL                
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : NULL  ; NULL                
REMARK   3    MULTIPLE TORSION                (A) : NULL  ; NULL                
REMARK   3    H-BOND (X...Y)                  (A) : NULL  ; NULL                
REMARK   3    H-BOND (X-H...Y)                (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   CONFORMATIONAL TORSION ANGLE RESTRAINTS.                           
REMARK   3    SPECIFIED                 (DEGREES) : NULL  ; NULL                
REMARK   3    PLANAR                    (DEGREES) : NULL  ; NULL                
REMARK   3    STAGGERED                 (DEGREES) : NULL  ; NULL                
REMARK   3    TRANSVERSE                (DEGREES) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND               (A**2) : NULL  ; NULL                
REMARK   3   MAIN-CHAIN ANGLE              (A**2) : NULL  ; NULL                
REMARK   3   SIDE-CHAIN BOND               (A**2) : NULL  ; NULL                
REMARK   3   SIDE-CHAIN ANGLE              (A**2) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  RESIDUES 210 - 212 IN CHAIN A HAVE HIGH TEMPERATURE                 
REMARK   3  FACTORS, ARE IN WEAK DENSITY, AND HAVE SIGNIFICANT                  
REMARK   3  DISORDER.                                                           
REMARK   4                                                                      
REMARK   4 1CDD COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000172249.                                   
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                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
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: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 67.47                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.78                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -X,Y,-Z+1/2                                             
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z                                           
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   X+1/2,-Y+1/2,-Z                                         
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       51.20000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       51.20000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       70.45000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       48.80000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       70.45000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       48.80000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       51.20000            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       70.45000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       48.80000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       51.20000            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       70.45000            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       48.80000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: THE TRANSFORMATION PRESENTED ON *MTRIX* RECORDS BELOW WILL   
REMARK 300 YIELD APPROXIMATE COORDINATES FOR MOLECULE 1 (CHAIN A) WHEN          
REMARK 300 APPLIED TO MOLECULE 2 (CHAIN B) WITH AN RMS DEVIATION OF             
REMARK 300 0.83 ANGSTROMS FOR 189 CA COORDINATES (APPROXIMATELY A               
REMARK 300 TWO-FOLD ROTATION, 184 DEGREES).                                     
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 2120 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 17790 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -23.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 2280 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 17620 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -26.0 KCAL/MOL                        
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 350 APPLY THE FOLLOWING TO CHAINS: B                                     
REMARK 350   BIOMT1   2 -1.000000  0.000000  0.000000      211.35000            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000      -48.80000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       51.20000            
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     SER A   110                                                      
REMARK 465     LEU A   111                                                      
REMARK 465     LEU A   112                                                      
REMARK 465     PRO A   113                                                      
REMARK 465     LYS A   114                                                      
REMARK 465     TYR A   115                                                      
REMARK 465     PRO A   116                                                      
REMARK 465     GLY A   117                                                      
REMARK 465     LEU A   118                                                      
REMARK 465     HIS A   119                                                      
REMARK 465     THR A   120                                                      
REMARK 465     HIS A   121                                                      
REMARK 465     ARG A   122                                                      
REMARK 465     GLN A   123                                                      
REMARK 465     ALA A   124                                                      
REMARK 465     LEU A   125                                                      
REMARK 465     GLU A   126                                                      
REMARK 465     ASN A   127                                                      
REMARK 465     GLY A   128                                                      
REMARK 465     ASP A   129                                                      
REMARK 465     GLU A   130                                                      
REMARK 465     GLU A   131                                                      
REMARK 465     HIS A   132                                                      
REMARK 465     SER B   110                                                      
REMARK 465     LEU B   111                                                      
REMARK 465     LEU B   112                                                      
REMARK 465     PRO B   113                                                      
REMARK 465     LYS B   114                                                      
REMARK 465     TYR B   115                                                      
REMARK 465     PRO B   116                                                      
REMARK 465     GLY B   117                                                      
REMARK 465     LEU B   118                                                      
REMARK 465     HIS B   119                                                      
REMARK 465     THR B   120                                                      
REMARK 465     HIS B   121                                                      
REMARK 465     ARG B   122                                                      
REMARK 465     GLN B   123                                                      
REMARK 465     ALA B   124                                                      
REMARK 465     LEU B   125                                                      
REMARK 465     GLU B   126                                                      
REMARK 465     ASN B   127                                                      
REMARK 465     GLY B   128                                                      
REMARK 465     ASP B   129                                                      
REMARK 465     GLU B   130                                                      
REMARK 465     GLU B   131                                                      
REMARK 465     HIS B   132                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    HIS A  54   NE2   HIS A  54   CD2    -0.068                       
REMARK 500    HIS A  73   NE2   HIS A  73   CD2    -0.068                       
REMARK 500    HIS A  99   NE2   HIS A  99   CD2    -0.075                       
REMARK 500    HIS B  54   NE2   HIS B  54   CD2    -0.071                       
REMARK 500    HIS B  73   NE2   HIS B  73   CD2    -0.075                       
REMARK 500    HIS B  99   NE2   HIS B  99   CD2    -0.071                       
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    MET A   1   CA  -  C   -  N   ANGL. DEV. =  13.6 DEGREES          
REMARK 500    ILE A  18   CB  -  CG1 -  CD1 ANGL. DEV. = -18.6 DEGREES          
REMARK 500    ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   4.1 DEGREES          
REMARK 500    ARG A  47   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500    THR A  53   CA  -  CB  -  OG1 ANGL. DEV. = -13.7 DEGREES          
REMARK 500    THR A  53   CA  -  CB  -  CG2 ANGL. DEV. =   8.5 DEGREES          
REMARK 500    PHE A  61   N   -  CA  -  C   ANGL. DEV. =  16.5 DEGREES          
REMARK 500    ARG A  64   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.3 DEGREES          
REMARK 500    ARG A  69   NE  -  CZ  -  NH1 ANGL. DEV. =   3.3 DEGREES          
REMARK 500    MET A  77   CA  -  CB  -  CG  ANGL. DEV. =  12.5 DEGREES          
REMARK 500    TYR A  78   CB  -  CG  -  CD1 ANGL. DEV. =  -3.8 DEGREES          
REMARK 500    ARG A  90   CB  -  CG  -  CD  ANGL. DEV. =  15.8 DEGREES          
REMARK 500    GLY A 133   CA  -  C   -  N   ANGL. DEV. = -17.2 DEGREES          
REMARK 500    THR A 134   C   -  N   -  CA  ANGL. DEV. =  15.8 DEGREES          
REMARK 500    THR A 134   CA  -  CB  -  CG2 ANGL. DEV. = -13.1 DEGREES          
REMARK 500    THR A 134   N   -  CA  -  C   ANGL. DEV. =  19.6 DEGREES          
REMARK 500    THR A 134   CA  -  C   -  N   ANGL. DEV. = -15.1 DEGREES          
REMARK 500    ASP A 141   N   -  CA  -  C   ANGL. DEV. =  19.1 DEGREES          
REMARK 500    ASP A 141   CA  -  C   -  N   ANGL. DEV. =  13.5 DEGREES          
REMARK 500    ASP A 141   O   -  C   -  N   ANGL. DEV. =  -9.7 DEGREES          
REMARK 500    TRP A 183   CD1 -  CG  -  CD2 ANGL. DEV. =   6.6 DEGREES          
REMARK 500    TRP A 183   CE2 -  CD2 -  CG  ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    ARG A 188   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.9 DEGREES          
REMARK 500    TRP A 197   CD1 -  CG  -  CD2 ANGL. DEV. =   5.3 DEGREES          
REMARK 500    TRP A 197   NE1 -  CE2 -  CZ2 ANGL. DEV. =  -6.7 DEGREES          
REMARK 500    TRP A 197   CE2 -  CD2 -  CG  ANGL. DEV. =  -6.2 DEGREES          
REMARK 500    GLN A 201   CB  -  CA  -  C   ANGL. DEV. = -12.3 DEGREES          
REMARK 500    TYR A 208   CB  -  CG  -  CD2 ANGL. DEV. =  -3.7 DEGREES          
REMARK 500    ASN B  10   CA  -  C   -  N   ANGL. DEV. =  14.6 DEGREES          
REMARK 500    ARG B  31   CA  -  CB  -  CG  ANGL. DEV. =  14.7 DEGREES          
REMARK 500    ALA B  32   CB  -  CA  -  C   ANGL. DEV. = -11.8 DEGREES          
REMARK 500    VAL B  33   CA  -  CB  -  CG2 ANGL. DEV. =  -9.4 DEGREES          
REMARK 500    ALA B  38   CA  -  C   -  N   ANGL. DEV. =  18.1 DEGREES          
REMARK 500    ALA B  38   O   -  C   -  N   ANGL. DEV. = -13.9 DEGREES          
REMARK 500    ASP B  39   CB  -  CA  -  C   ANGL. DEV. = -14.9 DEGREES          
REMARK 500    ASP B  39   N   -  CA  -  CB  ANGL. DEV. =  12.1 DEGREES          
REMARK 500    ARG B  45   NE  -  CZ  -  NH1 ANGL. DEV. =   3.4 DEGREES          
REMARK 500    ARG B  64   NE  -  CZ  -  NH2 ANGL. DEV. =  -6.4 DEGREES          
REMARK 500    ARG B  69   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500    VAL B  82   CB  -  CA  -  C   ANGL. DEV. = -13.8 DEGREES          
REMARK 500    PHE B  88   CA  -  C   -  N   ANGL. DEV. =  13.9 DEGREES          
REMARK 500    ARG B  90   NE  -  CZ  -  NH1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500    PRO B 109   N   -  CA  -  C   ANGL. DEV. =  21.5 DEGREES          
REMARK 500    PRO B 109   CA  -  C   -  N   ANGL. DEV. = -15.8 DEGREES          
REMARK 500    GLY B 133   CA  -  C   -  N   ANGL. DEV. = -16.9 DEGREES          
REMARK 500    GLY B 133   O   -  C   -  N   ANGL. DEV. =  10.0 DEGREES          
REMARK 500    THR B 134   C   -  N   -  CA  ANGL. DEV. =  20.8 DEGREES          
REMARK 500    THR B 134   CA  -  CB  -  OG1 ANGL. DEV. = -15.6 DEGREES          
REMARK 500    THR B 134   CA  -  CB  -  CG2 ANGL. DEV. =  13.0 DEGREES          
REMARK 500    HIS B 137   CE1 -  NE2 -  CD2 ANGL. DEV. =   5.6 DEGREES          
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS      67 ANGLE DEVIATIONS.                             
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    ASN A  24        9.44     49.19                                   
REMARK 500    ALA A  40      103.92    -58.15                                   
REMARK 500    PHE A  41      -37.14    -35.23                                   
REMARK 500    ASP A  62      -60.74     65.75                                   
REMARK 500    ALA A  79       79.97     38.98                                   
REMARK 500    ALA A  95      -54.91    129.59                                   
REMARK 500    ALA A 101      -98.64     29.41                                   
REMARK 500    THR A 134      112.66     29.34                                   
REMARK 500    ASP A 141       33.31   -154.47                                   
REMARK 500    GLU A 142       -6.01     62.67                                   
REMARK 500    ASP A 144       37.07     39.19                                   
REMARK 500    ALA A 158      109.72    -54.48                                   
REMARK 500    ALA A 185       57.55    -93.92                                   
REMARK 500    ASP A 186       -4.90   -177.42                                   
REMARK 500    GLU A 193       88.03     25.00                                   
REMARK 500    LEU A 198     -106.38    -85.91                                   
REMARK 500    TYR A 208      155.89     56.89                                   
REMARK 500    ALA A 210     -116.18    170.61                                   
REMARK 500    ASN B   2       75.50     51.77                                   
REMARK 500    ASN B  24       19.51     52.81                                   
REMARK 500    LYS B  27       72.08    -65.13                                   
REMARK 500    ARG B  31       25.88    -71.41                                   
REMARK 500    ALA B  32      133.27    141.23                                   
REMARK 500    ALA B  38     -168.29    -57.11                                   
REMARK 500    ASP B  39      -40.67     55.42                                   
REMARK 500    ALA B  40       91.04    -43.38                                   
REMARK 500    HIS B  54       83.43   -152.21                                   
REMARK 500    LEU B  56       72.32   -109.07                                   
REMARK 500    ALA B  58     -171.80    -68.13                                   
REMARK 500    SER B  59      -34.84     74.64                                   
REMARK 500    LEU B  92      157.76    -46.72                                   
REMARK 500    THR B 134      113.10     97.40                                   
REMARK 500    PHE B 157       98.18    -64.17                                   
REMARK 500    ALA B 158      -30.73     18.57                                   
REMARK 500    GLU B 162      100.59    -46.59                                   
REMARK 500    ASP B 163      -47.67    176.48                                   
REMARK 500    ASN B 194       40.87     38.44                                   
REMARK 500    ASP B 199       50.74     28.35                                   
REMARK 500    ARG B 202      121.53    -33.58                                   
REMARK 500    PRO B 204      156.59     48.97                                   
REMARK 500    PRO B 205      -16.64    -44.96                                   
REMARK 500    TYR B 208     -152.48   -177.59                                   
REMARK 500    ALA B 209     -128.51    -50.21                                   
REMARK 500    ALA B 210       58.07    -63.27                                   
REMARK 500    ASP B 211      -33.75     38.26                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS                                         
REMARK 500                                                                      
REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH          
REMARK 500 CIS AND TRANS CONFORMATION.  CIS BONDS, IF ANY, ARE LISTED           
REMARK 500 ON CISPEP RECORDS.  TRANS IS DEFINED AS 180 +/- 30 AND               
REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES.                                  
REMARK 500                                 MODEL     OMEGA                      
REMARK 500 PRO B  204     PRO B  205                 -147.70                    
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 PO4 A 221                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 B 221                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1CDE   RELATED DB: PDB                                   
REMARK 900 TERNARY COMPLEX WITH GLYCINAMIDE RIBONUCLEOTIDE AND THE INHIBITOR 5- 
REMARK 900 DEAZA-5,6,7,8-TETRAHYDROFOLATE                                       
DBREF  1CDD A    1   212  UNP    P08179   PUR3_ECOLI       1    212             
DBREF  1CDD B    1   212  UNP    P08179   PUR3_ECOLI       1    212             
SEQRES   1 A  212  MET ASN ILE VAL VAL LEU ILE SER GLY ASN GLY SER ASN          
SEQRES   2 A  212  LEU GLN ALA ILE ILE ASP ALA CYS LYS THR ASN LYS ILE          
SEQRES   3 A  212  LYS GLY THR VAL ARG ALA VAL PHE SER ASN LYS ALA ASP          
SEQRES   4 A  212  ALA PHE GLY LEU GLU ARG ALA ARG GLN ALA GLY ILE ALA          
SEQRES   5 A  212  THR HIS THR LEU ILE ALA SER ALA PHE ASP SER ARG GLU          
SEQRES   6 A  212  ALA TYR ASP ARG GLU LEU ILE HIS GLU ILE ASP MET TYR          
SEQRES   7 A  212  ALA PRO ASP VAL VAL VAL LEU ALA GLY PHE MET ARG ILE          
SEQRES   8 A  212  LEU SER PRO ALA PHE VAL SER HIS TYR ALA GLY ARG LEU          
SEQRES   9 A  212  LEU ASN ILE HIS PRO SER LEU LEU PRO LYS TYR PRO GLY          
SEQRES  10 A  212  LEU HIS THR HIS ARG GLN ALA LEU GLU ASN GLY ASP GLU          
SEQRES  11 A  212  GLU HIS GLY THR SER VAL HIS PHE VAL THR ASP GLU LEU          
SEQRES  12 A  212  ASP GLY GLY PRO VAL ILE LEU GLN ALA LYS VAL PRO VAL          
SEQRES  13 A  212  PHE ALA GLY ASP SER GLU ASP ASP ILE THR ALA ARG VAL          
SEQRES  14 A  212  GLN THR GLN GLU HIS ALA ILE TYR PRO LEU VAL ILE SER          
SEQRES  15 A  212  TRP PHE ALA ASP GLY ARG LEU LYS MET HIS GLU ASN ALA          
SEQRES  16 A  212  ALA TRP LEU ASP GLY GLN ARG LEU PRO PRO GLN GLY TYR          
SEQRES  17 A  212  ALA ALA ASP GLU                                              
SEQRES   1 B  212  MET ASN ILE VAL VAL LEU ILE SER GLY ASN GLY SER ASN          
SEQRES   2 B  212  LEU GLN ALA ILE ILE ASP ALA CYS LYS THR ASN LYS ILE          
SEQRES   3 B  212  LYS GLY THR VAL ARG ALA VAL PHE SER ASN LYS ALA ASP          
SEQRES   4 B  212  ALA PHE GLY LEU GLU ARG ALA ARG GLN ALA GLY ILE ALA          
SEQRES   5 B  212  THR HIS THR LEU ILE ALA SER ALA PHE ASP SER ARG GLU          
SEQRES   6 B  212  ALA TYR ASP ARG GLU LEU ILE HIS GLU ILE ASP MET TYR          
SEQRES   7 B  212  ALA PRO ASP VAL VAL VAL LEU ALA GLY PHE MET ARG ILE          
SEQRES   8 B  212  LEU SER PRO ALA PHE VAL SER HIS TYR ALA GLY ARG LEU          
SEQRES   9 B  212  LEU ASN ILE HIS PRO SER LEU LEU PRO LYS TYR PRO GLY          
SEQRES  10 B  212  LEU HIS THR HIS ARG GLN ALA LEU GLU ASN GLY ASP GLU          
SEQRES  11 B  212  GLU HIS GLY THR SER VAL HIS PHE VAL THR ASP GLU LEU          
SEQRES  12 B  212  ASP GLY GLY PRO VAL ILE LEU GLN ALA LYS VAL PRO VAL          
SEQRES  13 B  212  PHE ALA GLY ASP SER GLU ASP ASP ILE THR ALA ARG VAL          
SEQRES  14 B  212  GLN THR GLN GLU HIS ALA ILE TYR PRO LEU VAL ILE SER          
SEQRES  15 B  212  TRP PHE ALA ASP GLY ARG LEU LYS MET HIS GLU ASN ALA          
SEQRES  16 B  212  ALA TRP LEU ASP GLY GLN ARG LEU PRO PRO GLN GLY TYR          
SEQRES  17 B  212  ALA ALA ASP GLU                                              
HET    PO4  A 221       5                                                       
HET    PO4  B 221       5                                                       
HETNAM     PO4 PHOSPHATE ION                                                    
FORMUL   3  PO4    2(O4 P 3-)                                                   
HELIX    1  H1 GLY A   11  ASN A   24  1                                  14    
HELIX    2  H2 ALA A   40  GLY A   50  1                                  11    
HELIX    3  H3 SER A   63  ALA A   79  1                                  17    
HELIX    4  H4 SER A   93  ALA A  101  1                                   9    
HELIX    5  H6 SER A  161  GLY A  187  1                                  27    
HELIX    6  H7 GLY B   11  ASN B   24  1                                  14    
HELIX    7  H8 ALA B   40  GLY B   50  1                                  11    
HELIX    8  H9 SER B   63  ALA B   79  1                                  17    
HELIX    9 H10 SER B   93  ALA B  101  1                                   9    
HELIX   10 H12 SER B  161  GLY B  187  1                                  27    
SHEET    1 S1A 7 ALA A  52  SER A  59  0                                        
SHEET    2 S1A 7 ARG A  31  ASN A  36  1  N  VAL A  33   O  ALA A  52           
SHEET    3 S1A 7 MET A   1  SER A   8  1  N  ILE A   7   O  PHE A  34           
SHEET    4 S1A 7 ASP A  81  GLY A  87  1  O  VAL A  84   N  LEU A   6           
SHEET    5 S1A 7 ARG A 103  PRO A 109  1  O  LEU A 105   N  LEU A  85           
SHEET    6 S1A 7 GLY A 133  PHE A 138 -1  N  HIS A 137   O  ASN A 106           
SHEET    7 S1A 7 ILE A 149  ALA A 158 -1  O  LEU A 150   N  VAL A 136           
SHEET    1 S1B 7 ALA B  52  SER B  59  0                                        
SHEET    2 S1B 7 ARG B  31  ASN B  36  1  N  VAL B  33   O  ALA B  52           
SHEET    3 S1B 7 MET B   1  SER B   8  1  N  ILE B   7   O  PHE B  34           
SHEET    4 S1B 7 ASP B  81  GLY B  87  1  O  VAL B  84   N  LEU B   6           
SHEET    5 S1B 7 ARG B 103  PRO B 109  1  O  LEU B 105   N  LEU B  85           
SHEET    6 S1B 7 GLY B 133  PHE B 138 -1  N  HIS B 137   O  ASN B 106           
SHEET    7 S1B 7 ILE B 149  ALA B 158 -1  O  LEU B 150   N  VAL B 136           
SITE     1 AC1  6 ASN A  10  GLY A  11  SER A  12  ASN A  13                    
SITE     2 AC1  6 ALA A  86  GLU B 212                                          
SITE     1 AC2  5 ASN B  10  GLY B  11  SER B  12  ASN B  13                    
SITE     2 AC2  5 GLN B 170                                                     
CRYST1  140.900   97.600  102.400  90.00  90.00  90.00 C 2 2 21     16          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.007097  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010246  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009766        0.00000                         
MTRIX1   1 -0.193910  0.338750  0.920680      112.79000    1                    
MTRIX2   1  0.434940 -0.811520  0.390200        1.83000    1                    
MTRIX3   1  0.879330  0.476110  0.010020     -101.45000    1