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Database: PDB
Entry: 2G8X
LinkDB: 2G8X
Original site: 2G8X 
HEADER    TRANSFERASE                             03-MAR-06   2G8X              
TITLE     ESCHERICHIA COLI Y209W APOPROTEIN                                     
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: THYMIDYLATE SYNTHASE;                                      
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: TS, TSASE;                                                  
COMPND   5 EC: 2.1.1.45;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 GENE: THYA;                                                          
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: CHI2913RECA;                               
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID                               
KEYWDS    BETA SHEET, ALPHA/BETA PROTEIN, DTT, TRANSFERASE                      
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    T.T.LEE,J.S.FINER-MOORE,R.M.STROUD                                    
REVDAT   5   30-AUG-23 2G8X    1       REMARK                                   
REVDAT   4   20-OCT-21 2G8X    1       REMARK SEQADV LINK                       
REVDAT   3   13-JUL-11 2G8X    1       VERSN                                    
REVDAT   2   24-FEB-09 2G8X    1       VERSN                                    
REVDAT   1   14-MAR-06 2G8X    0                                                
JRNL        AUTH   Z.NEWBY,T.T.LEE,R.J.MORSE,L.LIU,Y.LIU,P.VENKATRAMAN,         
JRNL        AUTH 2 D.V.SANTI,J.S.FINER-MOORE,R.M.STROUD                         
JRNL        TITL   THE ROLE OF PROTEIN DYNAMICS IN THYMIDYLATE SYNTHASE         
JRNL        TITL 2 CATALYSIS: VARIANTS OF CONSERVED DUMP-BINDING TYR-261        
JRNL        REF    TO BE PUBLISHED                                              
JRNL        REFN                                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.83 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.83                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.70                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 2091436.200                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 41153                          
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 SET) : 0.164                           
REMARK   3   FREE R VALUE                     : 0.202                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2076                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.005                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.83                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.91                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.00                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 4773                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2250                       
REMARK   3   BIN FREE R VALUE                    : 0.3010                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.10                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 256                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.019                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4276                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 38                                      
REMARK   3   SOLVENT ATOMS            : 348                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 25.90                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 1.15000                                              
REMARK   3    B22 (A**2) : -5.39000                                             
REMARK   3    B33 (A**2) : 4.24000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 8.60000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.17                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.15                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.22                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.22                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.016                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.600                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 25.40                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.550                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 0.990 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 1.600 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.440 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.340 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.43                                                 
REMARK   3   BSOL        : 57.54                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : PARAM.PO4                                      
REMARK   3  PARAMETER FILE  4  : CARBONATE.PARAM                                
REMARK   3  PARAMETER FILE  5  : DTT_ODT_GCL.PARAM                              
REMARK   3  PARAMETER FILE  6  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : CARBONATE.TOPO                                 
REMARK   3  TOPOLOGY FILE  4   : TOPO.FORMIC                                    
REMARK   3  TOPOLOGY FILE  5   : DTT_ODT_GCL.TOP                                
REMARK   3  TOPOLOGY FILE  6   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HIS-51 AND CYS-146 IN CHAIN A ARE IN      
REMARK   3  TWO CONFORMATIONS IN THE CRYSTAL                                    
REMARK   4                                                                      
REMARK   4 2G8X COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-MAR-06.                  
REMARK 100 THE DEPOSITION ID IS D_1000036836.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-JAN-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 173                                
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL7-1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.08                               
REMARK 200  MONOCHROMATOR                  : SI(111)                            
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 41273                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.830                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.700                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY                : 7.300                              
REMARK 200  R MERGE                    (I) : 0.06400                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 28.1000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.83                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.86                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 98.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 6.00                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.45000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: PDB CODE 1TJS                                        
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 36.66                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.94                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 7.8MG/ML PROTEIN, 25MM KPO4, PH 7.5,     
REMARK 280  AND 5MM DTT EQUILIBRATED AGAINST A WELL BUFFER CONTAINING 28%       
REMARK 280  PEG 4K, 100 MM TRIS-CL, PH 8.9, 200MM SODIUM ACETATE AND 5MM DTT,   
REMARK 280  VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 295K                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y,-Z                                                 
REMARK 290       3555   X+1/2,Y+1/2,Z                                           
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        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   3  1.000000  0.000000  0.000000       33.30500            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       39.84500            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       33.30500            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       39.84500            
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 300 REMARK: CHAINS A AND B CONSTITUTE THE BIOLOGICAL HOMODIMER           
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: 6360 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 20040 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -35.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     ALA A   263                                                      
REMARK 465     ILE A   264                                                      
REMARK 465     ALA B   263                                                      
REMARK 465     ILE B   264                                                      
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     ARG B  21    CG   CD   NE   CZ   NH1  NH2                        
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   237     O    HOH A   498              2.05            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    LEU A 143   CA  -  CB  -  CG  ANGL. DEV. =  14.7 DEGREES          
REMARK 500    ARG A 222   NE  -  CZ  -  NH1 ANGL. DEV. =   6.3 DEGREES          
REMARK 500    ARG A 222   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.7 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    TYR A  94      -67.85    -27.05                                   
REMARK 500    ALA A 100       53.89   -156.12                                   
REMARK 500    ASP A 122       56.72   -148.23                                   
REMARK 500    TYR B  94      -72.57    -16.05                                   
REMARK 500    ALA B 100       51.72   -158.77                                   
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 CO3 A 803                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CO3 B 804                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CO3 B 805                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 565                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 B 567                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DTT A 800                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE DTT B 801                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2G8M   RELATED DB: PDB                                   
REMARK 900 E. COLI Y209W IN COMPLEX WITH DUMP AND CB3717                        
REMARK 900 RELATED ID: 2G86   RELATED DB: PDB                                   
REMARK 900 L. CASEI THYMIDYLATE SYNTHASE Y261F-DUMP                             
REMARK 900 RELATED ID: 2G8A   RELATED DB: PDB                                   
REMARK 900 L. CASEI THYMIDYLATE SYNTHASE Y261M-DUMP                             
REMARK 900 RELATED ID: 2G89   RELATED DB: PDB                                   
REMARK 900 L. CASEI THYMIDYLATE SYNTHASE Y261A-DUMP                             
REMARK 900 RELATED ID: 2G8D   RELATED DB: PDB                                   
REMARK 900 L. CASEI THYMIDYLATE SYNTHASE Y261W-DUMP                             
REMARK 900 RELATED ID: 2G8O   RELATED DB: PDB                                   
REMARK 900 E. COLI IN COMPLEX WITH DUMP AND CB3717                              
DBREF  2G8X A    1   264  UNP    P0A884   TYSY_ECOLI       1    264             
DBREF  2G8X B    1   264  UNP    P0A884   TYSY_ECOLI       1    264             
SEQADV 2G8X CXM A    1  UNP  P0A884    MET     1 MODIFIED RESIDUE               
SEQADV 2G8X TRP A  209  UNP  P0A884    TYR   209 ENGINEERED MUTATION            
SEQADV 2G8X CXM B    1  UNP  P0A884    MET     1 MODIFIED RESIDUE               
SEQADV 2G8X TRP B  209  UNP  P0A884    TYR   209 ENGINEERED MUTATION            
SEQRES   1 A  264  CXM LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU ASP          
SEQRES   2 A  264  GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY THR          
SEQRES   3 A  264  LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU GLN          
SEQRES   4 A  264  ASP GLY PHE PRO LEU VAL THR THR LYS ARG CYS HIS LEU          
SEQRES   5 A  264  ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN GLY          
SEQRES   6 A  264  ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL THR          
SEQRES   7 A  264  ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU GLY          
SEQRES   8 A  264  PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR PRO          
SEQRES   9 A  264  ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU ASN          
SEQRES  10 A  264  GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE VAL          
SEQRES  11 A  264  SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA LEU          
SEQRES  12 A  264  ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA ASP          
SEQRES  13 A  264  GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS ASP          
SEQRES  14 A  264  VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR ALA          
SEQRES  15 A  264  LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU GLU          
SEQRES  16 A  264  VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS LEU          
SEQRES  17 A  264  TRP SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SER          
SEQRES  18 A  264  ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS ARG          
SEQRES  19 A  264  LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP PHE          
SEQRES  20 A  264  GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS ALA          
SEQRES  21 A  264  PRO VAL ALA ILE                                              
SEQRES   1 B  264  CXM LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU ASP          
SEQRES   2 B  264  GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY THR          
SEQRES   3 B  264  LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU GLN          
SEQRES   4 B  264  ASP GLY PHE PRO LEU VAL THR THR LYS ARG CYS HIS LEU          
SEQRES   5 B  264  ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN GLY          
SEQRES   6 B  264  ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL THR          
SEQRES   7 B  264  ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU GLY          
SEQRES   8 B  264  PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR PRO          
SEQRES   9 B  264  ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU ASN          
SEQRES  10 B  264  GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE VAL          
SEQRES  11 B  264  SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA LEU          
SEQRES  12 B  264  ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA ASP          
SEQRES  13 B  264  GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS ASP          
SEQRES  14 B  264  VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR ALA          
SEQRES  15 B  264  LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU GLU          
SEQRES  16 B  264  VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS LEU          
SEQRES  17 B  264  TRP SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SER          
SEQRES  18 B  264  ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS ARG          
SEQRES  19 B  264  LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP PHE          
SEQRES  20 B  264  GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS ALA          
SEQRES  21 B  264  PRO VAL ALA ILE                                              
MODRES 2G8X CXM A    1  MET  N-CARBOXYMETHIONINE                                
MODRES 2G8X CXM B    1  MET  N-CARBOXYMETHIONINE                                
HET    CXM  A   1      11                                                       
HET    CXM  B   1      11                                                       
HET    CO3  A 803       4                                                       
HET    PO4  A 565       5                                                       
HET    DTT  A 800       8                                                       
HET    CO3  B 804       4                                                       
HET    CO3  B 805       4                                                       
HET    PO4  B 567       5                                                       
HET    DTT  B 801       8                                                       
HETNAM     CXM N-CARBOXYMETHIONINE                                              
HETNAM     CO3 CARBONATE ION                                                    
HETNAM     PO4 PHOSPHATE ION                                                    
HETNAM     DTT 2,3-DIHYDROXY-1,4-DITHIOBUTANE                                   
HETSYN     DTT 1,4-DITHIOTHREITOL                                               
FORMUL   1  CXM    2(C6 H11 N O4 S)                                             
FORMUL   3  CO3    3(C O3 2-)                                                   
FORMUL   4  PO4    2(O4 P 3-)                                                   
FORMUL   5  DTT    2(C4 H10 O2 S2)                                              
FORMUL  10  HOH   *348(H2 O)                                                    
HELIX    1   1 CXM A    1  GLY A   15  1                                  15    
HELIX    2   2 LEU A   52  GLY A   65  1                                  14    
HELIX    3   3 ILE A   69  ASN A   75  1                                   7    
HELIX    4   4 VAL A   93  ALA A  100  1                                   8    
HELIX    5   5 ASP A  110  ASP A  122  1                                  13    
HELIX    6   6 ASN A  134  MET A  141  5                                   8    
HELIX    7   7 LEU A  172  CYS A  192  1                                  21    
HELIX    8   8 HIS A  212  SER A  221  1                                  10    
HELIX    9   9 ARG A  243  GLU A  245  5                                   3    
HELIX   10  10 CXM B    1  GLY B   15  1                                  15    
HELIX   11  11 HIS B   51  GLY B   65  1                                  15    
HELIX   12  12 ILE B   69  ASN B   75  1                                   7    
HELIX   13  13 VAL B   93  ALA B  100  1                                   8    
HELIX   14  14 ASP B  110  ASP B  122  1                                  13    
HELIX   15  15 ASN B  134  MET B  141  5                                   8    
HELIX   16  16 LEU B  172  CYS B  192  1                                  21    
HELIX   17  17 HIS B  212  SER B  221  1                                  10    
HELIX   18  18 ARG B  243  GLU B  245  5                                   3    
SHEET    1   A 6 THR A  16  LYS A  18  0                                        
SHEET    2   A 6 THR A  26  ASN A  37 -1  O  SER A  28   N  THR A  16           
SHEET    3   A 6 GLU A 195  TRP A 209 -1  O  PHE A 199   N  PHE A  36           
SHEET    4   A 6 LYS A 158  ASP A 169  1  N  GLN A 165   O  THR A 202           
SHEET    5   A 6 HIS A 147  ALA A 155 -1  N  TYR A 153   O  SER A 160           
SHEET    6   A 6 ILE A 128  SER A 131 -1  N  VAL A 130   O  PHE A 150           
SHEET    1   B 2 TRP A 101  PRO A 102  0                                        
SHEET    2   B 2 HIS A 108  ILE A 109 -1  O  ILE A 109   N  TRP A 101           
SHEET    1   C 2 LYS A 229  ILE A 232  0                                        
SHEET    2   C 2 PHE A 247  GLU A 250 -1  O  GLU A 248   N  ILE A 231           
SHEET    1   D 6 THR B  16  LYS B  18  0                                        
SHEET    2   D 6 THR B  26  ASN B  37 -1  O  THR B  26   N  LYS B  18           
SHEET    3   D 6 GLU B 195  TRP B 209 -1  O  PHE B 199   N  PHE B  36           
SHEET    4   D 6 LYS B 158  ASP B 169  1  N  GLN B 165   O  THR B 202           
SHEET    5   D 6 HIS B 147  ALA B 155 -1  N  TYR B 153   O  SER B 160           
SHEET    6   D 6 ILE B 129  SER B 131 -1  N  VAL B 130   O  PHE B 150           
SHEET    1   E 2 TRP B 101  PRO B 102  0                                        
SHEET    2   E 2 HIS B 108  ILE B 109 -1  O  ILE B 109   N  TRP B 101           
SHEET    1   F 2 LYS B 229  ILE B 232  0                                        
SHEET    2   F 2 PHE B 247  GLU B 250 -1  O  GLU B 248   N  ILE B 231           
LINK         C   CXM A   1                 N   LYS A   2     1555   1555  1.32  
LINK         C   CXM B   1                 N   LYS B   2     1555   1555  1.33  
SITE     1 AC1  5 CYS A  50  HIS A  51  HOH A 317  HOH A 517                    
SITE     2 AC1  5 HOH A 655                                                     
SITE     1 AC2  4 CYS B  50  HIS B  51  HOH B 340  HOH B 532                    
SITE     1 AC3  8 TRP A 101  PRO A 102  PRO A 104  HOH A 291                    
SITE     2 AC3  8 TRP B 101  PRO B 102  ASN B 134  GLY B 136                    
SITE     1 AC4  5 ARG A  21  ARG A 166  SER A 167  HOH A 608                    
SITE     2 AC4  5 ARG B 126                                                     
SITE     1 AC5  5 ARG A 126  ARG B 166  SER B 167  HOH B 296                    
SITE     2 AC5  5 HOH B 512                                                     
SITE     1 AC6  7 GLU A  58  ILE A  79  TRP A  80  PHE A 176                    
SITE     2 AC6  7 HOH A 615  HOH A 642  HOH A 661                               
SITE     1 AC7  4 GLU B  58  ILE B  79  TRP B  80  HOH B 697                    
CRYST1   66.610   79.690   92.240  90.00 103.86  90.00 C 1 2 1       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      0.015013  0.000000  0.003704        0.00000                         
SCALE2      0.000000  0.012549  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011166        0.00000                         
HETATM    1  N   CXM A   1      11.572  -9.469  46.695  1.00 19.23           N  
HETATM    2  CA  CXM A   1      12.712 -10.324  46.254  1.00 20.21           C  
HETATM    3  CB  CXM A   1      12.400 -11.096  44.934  1.00 20.72           C  
HETATM    4  CG  CXM A   1      11.214 -12.023  44.999  1.00 23.49           C  
HETATM    5  SD  CXM A   1      10.837 -12.696  43.356  1.00 23.37           S  
HETATM    6  CE  CXM A   1      10.008 -11.363  42.496  1.00 21.58           C  
HETATM    7  C   CXM A   1      13.897  -9.451  45.968  1.00 19.96           C  
HETATM    8  O   CXM A   1      13.755  -8.281  45.612  1.00 19.97           O  
HETATM    9  CN  CXM A   1      10.696  -9.849  47.617  1.00 19.09           C  
HETATM   10  ON1 CXM A   1       9.776  -9.017  47.833  1.00 18.77           O  
HETATM   11  ON2 CXM A   1      10.561 -11.057  47.923  1.00 19.07           O  
(ATOM LINES ARE NOT SHOWN.)
END                                                                             
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