PDB Short entry for 2PTQ
HEADER    LYASE                                   08-MAY-07   2PTQ              
TITLE     CRYSTAL STRUCTURE OF ESCHERICHIA COLI ADENYLOSUCCINATE LYASE MUTANT   
TITLE    2 H171N WITH BOUND AMP AND FUMARATE                                    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ADENYLOSUCCINATE LYASE;                                    
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: ADENYLOSUCCINATE, ASL;                                      
COMPND   5 EC: 4.3.2.2;                                                         
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: PURB;                                                          
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: BL21C+;                                    
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PET-28A                                   
KEYWDS    ADENYLOSUCCINATE LYASE, MUTANT-PRODUCT COMPLEX, LYASE                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.TSAI,P.L.HOWELL                                                     
REVDAT   7   03-APR-24 2PTQ    1       REMARK                                   
REVDAT   6   15-NOV-23 2PTQ    1       ATOM                                     
REVDAT   5   20-OCT-21 2PTQ    1       REMARK SEQADV                            
REVDAT   4   15-FEB-12 2PTQ    1       HET    HETATM HETNAM                     
REVDAT   3   13-JUL-11 2PTQ    1       VERSN                                    
REVDAT   2   24-FEB-09 2PTQ    1       VERSN                                    
REVDAT   1   03-JUL-07 2PTQ    0                                                
JRNL        AUTH   M.TSAI,J.KOO,P.YIP,R.F.COLMAN,M.L.SEGALL,P.L.HOWELL          
JRNL        TITL   SUBSTRATE AND PRODUCT COMPLEXES OF ESCHERICHIA COLI          
JRNL        TITL 2 ADENYLOSUCCINATE LYASE PROVIDE NEW INSIGHTS INTO THE         
JRNL        TITL 3 ENZYMATIC MECHANISM.                                         
JRNL        REF    J.MOL.BIOL.                   V. 370   541 2007              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   17531264                                                     
JRNL        DOI    10.1016/J.JMB.2007.04.052                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.00 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS                                                  
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) : 2.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 35.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 99.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 67636                          
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) : 0.175                           
REMARK   3   FREE R VALUE                     : 0.211                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 3443                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.00                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.09                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.60                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2110                       
REMARK   3   BIN FREE R VALUE                    : 0.2380                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 420                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.012                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 7260                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 62                                      
REMARK   3   SOLVENT ATOMS            : 650                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 16.40                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 18.24                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 1.31000                                              
REMARK   3    B22 (A**2) : -1.78000                                             
REMARK   3    B33 (A**2) : 0.47000                                              
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) : 0.18                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.11                            
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) : 0.23                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.13                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.005                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.230                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 19.70                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.730                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : OVERALL                                   
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  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
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  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2PTQ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-MAY-07.                  
REMARK 100 THE DEPOSITION ID IS D_1000042763.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-APR-05                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 8.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RU300                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : CONFOCAL MULTILAYER                
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : D*TREK                             
REMARK 200  DATA SCALING SOFTWARE          : D*TREK                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 67637                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.000                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 35.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.9                               
REMARK 200  DATA REDUNDANCY                : 8.560                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.06700                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 19.9000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.09                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 8.38                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.25700                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 7.400                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS            
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: 2007-MAY-08.DEPOSIT.RCSB.ORG.80.SESSION.20619        
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 47.78                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.36                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: TRIS-HCL, SODIUM ACETATE TRI-HYDRATE,    
REMARK 280  PEG-4000, GLYCEROL, PH 8.5, VAPOR DIFFUSION, HANGING DROP,          
REMARK 280  TEMPERATURE 293K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2                        
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       49.56550            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       71.71750            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       49.56550            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       71.71750            
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: THE BIOLOGICAL ASSEMBLY IS A HOMOTETRAMER GENERATED FROM     
REMARK 300 THE DIMER IN THE ASYMMETRIC UNIT BY THE OPERATIONS: -X, -Y, X.       
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: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 40250 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 52420 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -138.0 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   BIOMT1   2 -1.000000  0.000000  0.000000       99.13100            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  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     HIS A   460                                                      
REMARK 465     HIS A   461                                                      
REMARK 465     HIS A   462                                                      
REMARK 465     HIS B   459                                                      
REMARK 465     HIS B   460                                                      
REMARK 465     HIS B   461                                                      
REMARK 465     HIS B   462                                                      
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 A 196    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     GLU A 223    CG   CD   OE1  OE2                                  
REMARK 470     GLU A 399    CG   CD   OE1  OE2                                  
REMARK 470     GLU A 407    CG   CD   OE1  OE2                                  
REMARK 470     ARG A 413    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     LYS A 420    CG   CD   CE   NZ                                   
REMARK 470     GLU A 430    CG   CD   OE1  OE2                                  
REMARK 470     GLU A 431    CG   CD   OE1  OE2                                  
REMARK 470     LYS B  54    CG   CD   CE   NZ                                   
REMARK 470     ARG B 413    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     GLU B 417    CG   CD   OE1  OE2                                  
REMARK 470     LYS B 420    CG   CD   CE   NZ                                   
REMARK 470     GLU B 431    CG   CD   OE1  OE2                                  
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    SER B   331     O    HOH B  2263     2655     2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    GLU A 249   N   -  CA  -  C   ANGL. DEV. = -16.4 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    VAL A 142      -59.83   -121.90                                   
REMARK 500    ILE A 207      110.80   -164.56                                   
REMARK 500    ASN A 208       23.37   -160.82                                   
REMARK 500    THR A 246     -136.71    -94.86                                   
REMARK 500    ASN A 282       31.25     71.22                                   
REMARK 500    TRP A 333     -126.19     48.70                                   
REMARK 500    ARG A 335      142.49    128.64                                   
REMARK 500    ASN A 370       79.45   -109.43                                   
REMARK 500    LYS A 400       50.84     37.44                                   
REMARK 500    ILE B  26      -59.16   -122.76                                   
REMARK 500    PHE B  74      118.84    -35.30                                   
REMARK 500    ILE B 207      108.42   -163.29                                   
REMARK 500    ASN B 208       18.71   -156.88                                   
REMARK 500    THR B 246     -140.49    -98.62                                   
REMARK 500    PRO B 329        0.58    -65.99                                   
REMARK 500    TRP B 333     -125.96     48.25                                   
REMARK 500    ARG B 335      141.10    127.50                                   
REMARK 500    LYS B 400       53.85     34.14                                   
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 FUM B 1100                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FUM A 1200                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP B 2100                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP A 2200                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2PTR   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF ESCHERICHIA COLI ADENYLOSUCCINATE LYASE MUTANT  
REMARK 900 H171A WITH BOUND ADENYLOSUCCINATE SUBSTRATE                          
REMARK 900 RELATED ID: 2PTS   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF WILD TYPE ESCHERICHIA COLI ADENYLOSUCCINATE     
REMARK 900 LYASE                                                                
DBREF  2PTQ A    1   456  UNP    P0AB89   PUR8_ECOLI       1    456             
DBREF  2PTQ B    1   456  UNP    P0AB89   PUR8_ECOLI       1    456             
SEQADV 2PTQ LEU A  154  UNP  P0AB89    ILE   154 CONFLICT                       
SEQADV 2PTQ ASN A  171  UNP  P0AB89    HIS   171 ENGINEERED MUTATION            
SEQADV 2PTQ HIS A  457  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS A  458  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS A  459  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS A  460  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS A  461  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS A  462  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ LEU B  154  UNP  P0AB89    ILE   154 CONFLICT                       
SEQADV 2PTQ ASN B  171  UNP  P0AB89    HIS   171 ENGINEERED MUTATION            
SEQADV 2PTQ HIS B  457  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS B  458  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS B  459  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS B  460  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS B  461  UNP  P0AB89              EXPRESSION TAG                 
SEQADV 2PTQ HIS B  462  UNP  P0AB89              EXPRESSION TAG                 
SEQRES   1 A  462  MET GLU LEU SER SER LEU THR ALA VAL SER PRO VAL ASP          
SEQRES   2 A  462  GLY ARG TYR GLY ASP LYS VAL SER ALA LEU ARG GLY ILE          
SEQRES   3 A  462  PHE SER GLU TYR GLY LEU LEU LYS PHE ARG VAL GLN VAL          
SEQRES   4 A  462  GLU VAL ARG TRP LEU GLN LYS LEU ALA ALA HIS ALA ALA          
SEQRES   5 A  462  ILE LYS GLU VAL PRO ALA PHE ALA ALA ASP ALA ILE GLY          
SEQRES   6 A  462  TYR LEU ASP ALA ILE VAL ALA SER PHE SER GLU GLU ASP          
SEQRES   7 A  462  ALA ALA ARG ILE LYS THR ILE GLU ARG THR THR ASN HIS          
SEQRES   8 A  462  ASP VAL LYS ALA VAL GLU TYR PHE LEU LYS GLU LYS VAL          
SEQRES   9 A  462  ALA GLU ILE PRO GLU LEU HIS ALA VAL SER GLU PHE ILE          
SEQRES  10 A  462  HIS PHE ALA CYS THR SER GLU ASP ILE ASN ASN LEU SER          
SEQRES  11 A  462  HIS ALA LEU MET LEU LYS THR ALA ARG ASP GLU VAL ILE          
SEQRES  12 A  462  LEU PRO TYR TRP ARG GLN LEU ILE ASP GLY LEU LYS ASP          
SEQRES  13 A  462  LEU ALA VAL GLN TYR ARG ASP ILE PRO LEU LEU SER ARG          
SEQRES  14 A  462  THR ASN GLY GLN PRO ALA THR PRO SER THR ILE GLY LYS          
SEQRES  15 A  462  GLU MET ALA ASN VAL ALA TYR ARG MET GLU ARG GLN TYR          
SEQRES  16 A  462  ARG GLN LEU ASN GLN VAL GLU ILE LEU GLY LYS ILE ASN          
SEQRES  17 A  462  GLY ALA VAL GLY ASN TYR ASN ALA HIS ILE ALA ALA TYR          
SEQRES  18 A  462  PRO GLU VAL ASP TRP HIS GLN PHE SER GLU GLU PHE VAL          
SEQRES  19 A  462  THR SER LEU GLY ILE GLN TRP ASN PRO TYR THR THR GLN          
SEQRES  20 A  462  ILE GLU PRO HIS ASP TYR ILE ALA GLU LEU PHE ASP CYS          
SEQRES  21 A  462  VAL ALA ARG PHE ASN THR ILE LEU ILE ASP PHE ASP ARG          
SEQRES  22 A  462  ASP VAL TRP GLY TYR ILE ALA LEU ASN HIS PHE LYS GLN          
SEQRES  23 A  462  LYS THR ILE ALA GLY GLU ILE GLY SER SER THR MET PRO          
SEQRES  24 A  462  HIS LYS VAL ASN PRO ILE ASP PHE GLU ASN SER GLU GLY          
SEQRES  25 A  462  ASN LEU GLY LEU SER ASN ALA VAL LEU GLN HIS LEU ALA          
SEQRES  26 A  462  SER LYS LEU PRO VAL SER ARG TRP GLN ARG ASP LEU THR          
SEQRES  27 A  462  ASP SER THR VAL LEU ARG ASN LEU GLY VAL GLY ILE GLY          
SEQRES  28 A  462  TYR ALA LEU ILE ALA TYR GLN SER THR LEU LYS GLY VAL          
SEQRES  29 A  462  SER LYS LEU GLU VAL ASN ARG ASP HIS LEU LEU ASP GLU          
SEQRES  30 A  462  LEU ASP HIS ASN TRP GLU VAL LEU ALA GLU PRO ILE GLN          
SEQRES  31 A  462  THR VAL MET ARG ARG TYR GLY ILE GLU LYS PRO TYR GLU          
SEQRES  32 A  462  LYS LEU LYS GLU LEU THR ARG GLY LYS ARG VAL ASP ALA          
SEQRES  33 A  462  GLU GLY MET LYS GLN PHE ILE ASP GLY LEU ALA LEU PRO          
SEQRES  34 A  462  GLU GLU GLU LYS ALA ARG LEU LYS ALA MET THR PRO ALA          
SEQRES  35 A  462  ASN TYR ILE GLY ARG ALA ILE THR MET VAL ASP GLU LEU          
SEQRES  36 A  462  LYS HIS HIS HIS HIS HIS HIS                                  
SEQRES   1 B  462  MET GLU LEU SER SER LEU THR ALA VAL SER PRO VAL ASP          
SEQRES   2 B  462  GLY ARG TYR GLY ASP LYS VAL SER ALA LEU ARG GLY ILE          
SEQRES   3 B  462  PHE SER GLU TYR GLY LEU LEU LYS PHE ARG VAL GLN VAL          
SEQRES   4 B  462  GLU VAL ARG TRP LEU GLN LYS LEU ALA ALA HIS ALA ALA          
SEQRES   5 B  462  ILE LYS GLU VAL PRO ALA PHE ALA ALA ASP ALA ILE GLY          
SEQRES   6 B  462  TYR LEU ASP ALA ILE VAL ALA SER PHE SER GLU GLU ASP          
SEQRES   7 B  462  ALA ALA ARG ILE LYS THR ILE GLU ARG THR THR ASN HIS          
SEQRES   8 B  462  ASP VAL LYS ALA VAL GLU TYR PHE LEU LYS GLU LYS VAL          
SEQRES   9 B  462  ALA GLU ILE PRO GLU LEU HIS ALA VAL SER GLU PHE ILE          
SEQRES  10 B  462  HIS PHE ALA CYS THR SER GLU ASP ILE ASN ASN LEU SER          
SEQRES  11 B  462  HIS ALA LEU MET LEU LYS THR ALA ARG ASP GLU VAL ILE          
SEQRES  12 B  462  LEU PRO TYR TRP ARG GLN LEU ILE ASP GLY LEU LYS ASP          
SEQRES  13 B  462  LEU ALA VAL GLN TYR ARG ASP ILE PRO LEU LEU SER ARG          
SEQRES  14 B  462  THR ASN GLY GLN PRO ALA THR PRO SER THR ILE GLY LYS          
SEQRES  15 B  462  GLU MET ALA ASN VAL ALA TYR ARG MET GLU ARG GLN TYR          
SEQRES  16 B  462  ARG GLN LEU ASN GLN VAL GLU ILE LEU GLY LYS ILE ASN          
SEQRES  17 B  462  GLY ALA VAL GLY ASN TYR ASN ALA HIS ILE ALA ALA TYR          
SEQRES  18 B  462  PRO GLU VAL ASP TRP HIS GLN PHE SER GLU GLU PHE VAL          
SEQRES  19 B  462  THR SER LEU GLY ILE GLN TRP ASN PRO TYR THR THR GLN          
SEQRES  20 B  462  ILE GLU PRO HIS ASP TYR ILE ALA GLU LEU PHE ASP CYS          
SEQRES  21 B  462  VAL ALA ARG PHE ASN THR ILE LEU ILE ASP PHE ASP ARG          
SEQRES  22 B  462  ASP VAL TRP GLY TYR ILE ALA LEU ASN HIS PHE LYS GLN          
SEQRES  23 B  462  LYS THR ILE ALA GLY GLU ILE GLY SER SER THR MET PRO          
SEQRES  24 B  462  HIS LYS VAL ASN PRO ILE ASP PHE GLU ASN SER GLU GLY          
SEQRES  25 B  462  ASN LEU GLY LEU SER ASN ALA VAL LEU GLN HIS LEU ALA          
SEQRES  26 B  462  SER LYS LEU PRO VAL SER ARG TRP GLN ARG ASP LEU THR          
SEQRES  27 B  462  ASP SER THR VAL LEU ARG ASN LEU GLY VAL GLY ILE GLY          
SEQRES  28 B  462  TYR ALA LEU ILE ALA TYR GLN SER THR LEU LYS GLY VAL          
SEQRES  29 B  462  SER LYS LEU GLU VAL ASN ARG ASP HIS LEU LEU ASP GLU          
SEQRES  30 B  462  LEU ASP HIS ASN TRP GLU VAL LEU ALA GLU PRO ILE GLN          
SEQRES  31 B  462  THR VAL MET ARG ARG TYR GLY ILE GLU LYS PRO TYR GLU          
SEQRES  32 B  462  LYS LEU LYS GLU LEU THR ARG GLY LYS ARG VAL ASP ALA          
SEQRES  33 B  462  GLU GLY MET LYS GLN PHE ILE ASP GLY LEU ALA LEU PRO          
SEQRES  34 B  462  GLU GLU GLU LYS ALA ARG LEU LYS ALA MET THR PRO ALA          
SEQRES  35 B  462  ASN TYR ILE GLY ARG ALA ILE THR MET VAL ASP GLU LEU          
SEQRES  36 B  462  LYS HIS HIS HIS HIS HIS HIS                                  
HET    FUM  A1200       8                                                       
HET    AMP  A2200      23                                                       
HET    FUM  B1100       8                                                       
HET    AMP  B2100      23                                                       
HETNAM     FUM FUMARIC ACID                                                     
HETNAM     AMP ADENOSINE MONOPHOSPHATE                                          
FORMUL   3  FUM    2(C4 H4 O4)                                                  
FORMUL   4  AMP    2(C10 H14 N5 O7 P)                                           
FORMUL   7  HOH   *650(H2 O)                                                    
HELIX    1   1 TYR A   16  LYS A   19  5                                   4    
HELIX    2   2 VAL A   20  GLY A   25  1                                   6    
HELIX    3   3 SER A   28  HIS A   50  1                                  23    
HELIX    4   4 ALA A   60  SER A   73  1                                  14    
HELIX    5   5 SER A   75  ASN A   90  1                                  16    
HELIX    6   6 HIS A   91  ALA A  105  1                                  15    
HELIX    7   7 ILE A  107  ALA A  112  1                                   6    
HELIX    8   8 VAL A  113  ILE A  117  5                                   5    
HELIX    9   9 THR A  122  VAL A  142  1                                  21    
HELIX   10  10 VAL A  142  TYR A  161  1                                  20    
HELIX   11  11 ILE A  180  VAL A  201  1                                  22    
HELIX   12  12 TYR A  214  TYR A  221  1                                   8    
HELIX   13  13 ASP A  225  LEU A  237  1                                  13    
HELIX   14  14 HIS A  251  LEU A  281  1                                  31    
HELIX   15  15 PRO A  304  LEU A  328  1                                  25    
HELIX   16  16 LEU A  337  ARG A  344  1                                   8    
HELIX   17  17 ASN A  345  LYS A  366  1                                  22    
HELIX   18  18 ASN A  370  ASP A  379  1                                  10    
HELIX   19  19 HIS A  380  VAL A  384  5                                   5    
HELIX   20  20 LEU A  385  TYR A  396  1                                  12    
HELIX   21  21 LYS A  400  ARG A  410  1                                  11    
HELIX   22  22 ASP A  415  GLY A  425  1                                  11    
HELIX   23  23 PRO A  429  MET A  439  1                                  11    
HELIX   24  24 THR A  440  TYR A  444  5                                   5    
HELIX   25  25 ARG A  447  LEU A  455  1                                   9    
HELIX   26  26 LYS A  456  HIS A  458  5                                   3    
HELIX   27  27 TYR B   16  ILE B   26  5                                  11    
HELIX   28  28 SER B   28  HIS B   50  1                                  23    
HELIX   29  29 ALA B   60  PHE B   74  1                                  15    
HELIX   30  30 SER B   75  ASN B   90  1                                  16    
HELIX   31  31 HIS B   91  ALA B  105  1                                  15    
HELIX   32  32 ILE B  107  ALA B  112  1                                   6    
HELIX   33  33 VAL B  113  ILE B  117  5                                   5    
HELIX   34  34 THR B  122  VAL B  142  1                                  21    
HELIX   35  35 VAL B  142  TYR B  161  1                                  20    
HELIX   36  36 ILE B  180  VAL B  201  1                                  22    
HELIX   37  37 TYR B  214  TYR B  221  1                                   8    
HELIX   38  38 ASP B  225  LEU B  237  1                                  13    
HELIX   39  39 HIS B  251  LEU B  281  1                                  31    
HELIX   40  40 PRO B  304  LEU B  328  1                                  25    
HELIX   41  41 LEU B  337  LEU B  343  1                                   7    
HELIX   42  42 ASN B  345  SER B  365  1                                  21    
HELIX   43  43 ASN B  370  ASP B  379  1                                  10    
HELIX   44  44 HIS B  380  VAL B  384  5                                   5    
HELIX   45  45 LEU B  385  TYR B  396  1                                  12    
HELIX   46  46 LYS B  400  ARG B  410  1                                  11    
HELIX   47  47 ASP B  415  GLY B  425  1                                  11    
HELIX   48  48 PRO B  429  MET B  439  1                                  11    
HELIX   49  49 ARG B  447  GLU B  454  1                                   8    
HELIX   50  50 LEU B  455  HIS B  458  5                                   4    
SHEET    1   A 2 PRO A 165  THR A 170  0                                        
SHEET    2   A 2 GLN A 173  THR A 179 -1  O  ALA A 175   N  SER A 168           
SHEET    1   B 2 LEU A 204  GLY A 205  0                                        
SHEET    2   B 2 GLN A 240  TRP A 241  1  O  GLN A 240   N  GLY A 205           
SHEET    1   C 2 PHE A 284  GLN A 286  0                                        
SHEET    2   C 2 LEU A 367  VAL A 369 -1  O  GLU A 368   N  LYS A 285           
SHEET    1   D 2 PRO B 165  THR B 170  0                                        
SHEET    2   D 2 GLN B 173  THR B 179 -1  O  ALA B 175   N  SER B 168           
SHEET    1   E 2 LEU B 204  GLY B 205  0                                        
SHEET    2   E 2 GLN B 240  TRP B 241  1  O  GLN B 240   N  GLY B 205           
SHEET    1   F 2 PHE B 284  GLN B 286  0                                        
SHEET    2   F 2 LEU B 367  VAL B 369 -1  O  GLU B 368   N  LYS B 285           
SITE     1 AC1 13 HIS A  91  THR A 122  SER A 123  THR A 170                    
SITE     2 AC1 13 ASN A 171  GLN A 247  AMP A2200  HOH A2211                    
SITE     3 AC1 13 SER B 295  SER B 296  MET B 298  LYS B 301                    
SITE     4 AC1 13 ASN B 303                                                     
SITE     1 AC2 13 SER A 295  SER A 296  MET A 298  LYS A 301                    
SITE     2 AC2 13 ASN A 303  HIS B  91  THR B 122  SER B 123                    
SITE     3 AC2 13 THR B 170  ASN B 171  GLN B 247  AMP B2100                    
SITE     4 AC2 13 HOH B2128                                                     
SITE     1 AC3 25 ARG A  15  TYR A  16  ASN A 303  ILE A 305                    
SITE     2 AC3 25 ASN A 309  FUM A1200  GLU B  86  ASN B  90                    
SITE     3 AC3 25 HIS B  91  ASP B  92  SER B 123  GLU B 124                    
SITE     4 AC3 25 ASN B 171  GLN B 247  ARG B 335  LEU B 337                    
SITE     5 AC3 25 SER B 340  THR B 341  ARG B 344  HOH B2119                    
SITE     6 AC3 25 HOH B2128  HOH B2171  HOH B2192  HOH B2242                    
SITE     7 AC3 25 HOH B2243                                                     
SITE     1 AC4 24 ASN A  90  HIS A  91  ASP A  92  SER A 123                    
SITE     2 AC4 24 GLU A 124  ASN A 171  GLN A 247  ARG A 335                    
SITE     3 AC4 24 LEU A 337  SER A 340  THR A 341  ARG A 344                    
SITE     4 AC4 24 HOH A2211  HOH A2249  HOH A2257  HOH A2270                    
SITE     5 AC4 24 HOH A2327  HOH A2414  ARG B  15  TYR B  16                    
SITE     6 AC4 24 ASN B 303  ILE B 305  ASN B 309  FUM B1100                    
CRYST1   99.131  143.435   69.483  90.00  90.00  90.00 P 21 21 2     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      0.010088  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.006972  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.014392        0.00000