HEADER    TRANSFERASE                             10-JUL-00   1F9H              
TITLE     CRYSTAL STRUCTURE OF THE TERNARY COMPLEX OF E. COLI HPPK(R92A) WITH   
TITLE    2 MGAMPCPP AND 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN AT 1.50 ANGSTROM      
TITLE    3 RESOLUTION                                                           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN PYROPHOSPHOKINASE;       
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: 2-AMINO-4-HYDROXY-6-HYDROXYMETHYLDIHYDROPTERIDINE           
COMPND   5 PYROPHOSPHOKINASE, HPPK;                                             
COMPND   6 EC: 2.7.6.3;                                                         
COMPND   7 ENGINEERED: YES;                                                     
COMPND   8 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   6 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PET17B                                    
KEYWDS    PYROPHOSPHOKINASE, PYROPHOSPHORYL TRANSFER, CATALYTIC MECHANISM,      
KEYWDS   2 FOLATE, HPPK, PTERIN, 6-HYDROXYMETHYL-7, 8-DIHYDROPTERIN, TERNARY    
KEYWDS   3 COMPLEX, SUBSTRATE SPECIFICITY, ANTIMICROBIAL AGENT, DRUG DESIGN,    
KEYWDS   4 TRANSFERASE                                                          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.BLASZCZYK,X.JI                                                      
REVDAT   5   30-AUG-23 1F9H    1       AUTHOR JRNL                              
REVDAT   4   09-AUG-23 1F9H    1       REMARK                                   
REVDAT   3   03-NOV-21 1F9H    1       REMARK SEQADV LINK                       
REVDAT   2   24-FEB-09 1F9H    1       VERSN                                    
REVDAT   1   15-APR-03 1F9H    0                                                
JRNL        AUTH   J.BLASZCZYK,Y.LI,G.SHI,H.YAN,X.JI                            
JRNL        TITL   DYNAMIC ROLES OF ARGININE RESIDUES 82 AND 92 OF ESCHERICHIA  
JRNL        TITL 2 COLI 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN PYROPHOSPHOKINASE:    
JRNL        TITL 3 CRYSTALLOGRAPHIC STUDIES                                     
JRNL        REF    BIOCHEMISTRY                  V.  42  1573 2003              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   12578370                                                     
JRNL        DOI    10.1021/BI0267994                                            
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   B.XIAO,G.SHI,X.CHEN,H.YAN,X.JI                               
REMARK   1  TITL   CRYSTAL STRUCTURE OF 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN       
REMARK   1  TITL 2 PYROPHOSPHOKINASE, A POTENTIAL TARGET FOR THE DEVELOPMENT OF 
REMARK   1  TITL 3 NOVEL ANTIMICROBIAL AGENTS                                   
REMARK   1  REF    STRUCTURE                     V.   7   489 1999              
REMARK   1  REFN                   ISSN 0969-2126                               
REMARK   1  DOI    10.1016/S0969-2126(99)80065-3                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : SHELXL-97                                            
REMARK   3   AUTHORS     : G.M.SHELDRICK                                        
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 94.8                           
REMARK   3   CROSS-VALIDATION METHOD           : FREE R                         
REMARK   3   FREE R VALUE TEST SET SELECTION   : RANDOM                         
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (NO CUTOFF).                         
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : NULL                   
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : 0.111                  
REMARK   3   FREE R VALUE                  (NO CUTOFF) : 0.151                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 4.978                  
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : 1084                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : 21774                  
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F).                     
REMARK   3   R VALUE   (WORKING + TEST SET, F>4SIG(F)) : NULL                   
REMARK   3   R VALUE          (WORKING SET, F>4SIG(F)) : 0.084                  
REMARK   3   FREE R VALUE                  (F>4SIG(F)) : 0.118                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : 4.978                  
REMARK   3   FREE R VALUE TEST SET COUNT   (F>4SIG(F)) : 811                    
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (F>4SIG(F)) : 16291                  
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS      : 1261                                          
REMARK   3   NUCLEIC ACID ATOMS : 0                                             
REMARK   3   HETEROGEN ATOMS    : 48                                            
REMARK   3   SOLVENT ATOMS      : 412                                           
REMARK   3                                                                      
REMARK   3  MODEL REFINEMENT.                                                   
REMARK   3   OCCUPANCY SUM OF NON-HYDROGEN ATOMS      : 1705.0                  
REMARK   3   OCCUPANCY SUM OF HYDROGEN ATOMS          : 1273.0                  
REMARK   3   NUMBER OF DISCRETELY DISORDERED RESIDUES : 21                      
REMARK   3   NUMBER OF LEAST-SQUARES PARAMETERS       : 14342                   
REMARK   3   NUMBER OF RESTRAINTS                     : 16916                   
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM RESTRAINT TARGET VALUES.                        
REMARK   3   BOND LENGTHS                         (A) : 0.009                   
REMARK   3   ANGLE DISTANCES                      (A) : 0.027                   
REMARK   3   SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000                   
REMARK   3   DISTANCES FROM RESTRAINT PLANES      (A) : 0.029                   
REMARK   3   ZERO CHIRAL VOLUMES               (A**3) : 0.060                   
REMARK   3   NON-ZERO CHIRAL VOLUMES           (A**3) : 0.057                   
REMARK   3   ANTI-BUMPING DISTANCE RESTRAINTS     (A) : 0.079                   
REMARK   3   RIGID-BOND ADP COMPONENTS         (A**2) : 0.003                   
REMARK   3   SIMILAR ADP COMPONENTS            (A**2) : 0.044                   
REMARK   3   APPROXIMATELY ISOTROPIC ADPS      (A**2) : 0.072                   
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED: MOEWS & KRETSINGER, J. MOL. BIOL. 91(1975) 201-228    
REMARK   3                                                                      
REMARK   3  STEREOCHEMISTRY TARGET VALUES : ENGH AND HUBER                      
REMARK   3   SPECIAL CASE: NULL                                                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  FULL-MATRIX LEAST-SQUARES PROCEDURE, WITH BLOCK OF PARAMETERS       
REMARK   3  SET FOR EACH CYCLE OF ANISOTROPIC REFINEMENT                        
REMARK   4                                                                      
REMARK   4 1F9H COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 11-JUL-00.                  
REMARK 100 THE DEPOSITION ID IS D_1000011408.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 06-SEP-99                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 5.20                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X9B                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.91700                            
REMARK 200  MONOCHROMATOR                  : SILICON 111                        
REMARK 200  OPTICS                         : MIRROR                             
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 22905                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.3                               
REMARK 200  DATA REDUNDANCY                : 3.418                              
REMARK 200  R MERGE                    (I) : 0.10000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 12.1143                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.50                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.55                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 94.2                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.05                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.44900                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.160                              
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: 1EQO                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 33.50                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.92                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PEG4000, MAGNESIUM CHLORIDE, ACETATE,    
REMARK 280  GLYCEROL, PH 5.20, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE       
REMARK 280  292.0K                                                              
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       36.80600            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       18.89150            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       36.80600            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       18.89150            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
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 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A 237  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 251  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 482  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 486  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 504  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 540  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 547  LIES ON A SPECIAL POSITION.                          
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    TRP A 158   C     TRP A 158   OXT     0.161                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ARG A  88   NE  -  CZ  -  NH2 ANGL. DEV. =  -6.2 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    SER A  13       79.41     63.66                                   
REMARK 500    ASP A  49       50.48    -90.47                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 161  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A  95   OD1                                                    
REMARK 620 2 ASP A  97   OD1  93.3                                              
REMARK 620 3 APC A 171   O1A  93.2 170.8                                        
REMARK 620 4 APC A 171   O1B  91.6  96.6  89.7                                  
REMARK 620 5 HOH A 212   O   173.4  86.6  86.2  94.9                            
REMARK 620 6 HOH A 226   O    85.1  85.7  88.4 176.1  88.4                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 162  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A  95   OD2                                                    
REMARK 620 2 ASP A  97   OD2  92.1                                              
REMARK 620 3 APC A 171   O1B  89.1  96.9                                        
REMARK 620 4 APC A 171   O3G 175.7  92.2  91.2                                  
REMARK 620 5 PH2 A 181   O4   83.0 172.4  88.8  92.7                            
REMARK 620 6 HOH A 216   O    90.3  89.5 173.6  88.9  84.8                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 161                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 162                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 163                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE APC A 171                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PH2 A 181                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1HKA   RELATED DB: PDB                                   
REMARK 900 1HKA IS THE CRYSTAL STRUCTURE OF UNLIGANDED HPPK FROM E. COLI.       
REMARK 900 RELATED ID: 1EQM   RELATED DB: PDB                                   
REMARK 900 1EQM IS THE CRYSTAL STRUCTURE OF BINARY COMPLEX OF HPPK FROM E.      
REMARK 900 COLI WITH MGADP.                                                     
REMARK 900 RELATED ID: 1EQ0   RELATED DB: PDB                                   
REMARK 900 1EQ0 IS THE SOLUTION STRUCTURE OF BINARY COMPLEX OF HPPK FROM E.     
REMARK 900 COLI WITH MGAMPPCP.                                                  
REMARK 900 RELATED ID: 1EQO   RELATED DB: PDB                                   
REMARK 900 1EQO IS THE CRYSTAL STRUCTURE OF TERNARY COMPLEX OF HPPK FROM E.     
REMARK 900 COLI WITH MGAMPCPP AND 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN.            
REMARK 900 RELATED ID: 1EX8   RELATED DB: PDB                                   
REMARK 900 1EX8 IS THE CRYSTAL STRUCTURE OF HPPK FROM E. COLI COMPLEXED WITH    
REMARK 900 HP4A, A TWO-SUBSTRATE-MIMICKING INHIBITOR.                           
REMARK 900 RELATED ID: 1CBK   RELATED DB: PDB                                   
REMARK 900 1CBK IS THE CRYSTAL STRUCTURE OF BINARY COMPLEX OF HPPK FROM         
REMARK 900 HAEMOPHILUS INFLUENZAE WITH A 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN      
REMARK 900 ANALOG.                                                              
REMARK 900 RELATED ID: 1DY3   RELATED DB: PDB                                   
REMARK 900 1DY3 IS THE CRYSTAL STRUCTURE OF TERNARY COMPLEX OF HPPK FROM E.     
REMARK 900 COLI WITH MGATP AND A 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN ANALOG.      
DBREF  1F9H A    1   158  UNP    P26281   HPPK_ECOLI       1    158             
SEQADV 1F9H ALA A   92  UNP  P26281    ARG    92 ENGINEERED MUTATION            
SEQRES   1 A  158  THR VAL ALA TYR ILE ALA ILE GLY SER ASN LEU ALA SER          
SEQRES   2 A  158  PRO LEU GLU GLN VAL ASN ALA ALA LEU LYS ALA LEU GLY          
SEQRES   3 A  158  ASP ILE PRO GLU SER HIS ILE LEU THR VAL SER SER PHE          
SEQRES   4 A  158  TYR ARG THR PRO PRO LEU GLY PRO GLN ASP GLN PRO ASP          
SEQRES   5 A  158  TYR LEU ASN ALA ALA VAL ALA LEU GLU THR SER LEU ALA          
SEQRES   6 A  158  PRO GLU GLU LEU LEU ASN HIS THR GLN ARG ILE GLU LEU          
SEQRES   7 A  158  GLN GLN GLY ARG VAL ARG LYS ALA GLU ARG TRP GLY PRO          
SEQRES   8 A  158  ALA THR LEU ASP LEU ASP ILE MET LEU PHE GLY ASN GLU          
SEQRES   9 A  158  VAL ILE ASN THR GLU ARG LEU THR VAL PRO HIS TYR ASP          
SEQRES  10 A  158  MET LYS ASN ARG GLY PHE MET LEU TRP PRO LEU PHE GLU          
SEQRES  11 A  158  ILE ALA PRO GLU LEU VAL PHE PRO ASP GLY GLU MET LEU          
SEQRES  12 A  158  ARG GLN ILE LEU HIS THR ARG ALA PHE ASP LYS LEU ASN          
SEQRES  13 A  158  LYS TRP                                                      
HET     MG  A 161       1                                                       
HET     MG  A 162       1                                                       
HET     CL  A 163       1                                                       
HET    APC  A 171      31                                                       
HET    PH2  A 181      14                                                       
HETNAM      MG MAGNESIUM ION                                                    
HETNAM      CL CHLORIDE ION                                                     
HETNAM     APC DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER                    
HETNAM     PH2 2-AMINO-6-HYDROXYMETHYL-7,8-DIHYDRO-3H-PTERIDIN-4-ONE            
HETSYN     APC ALPHA,BETA-METHYLENEADENOSINE-5'-TRIPHOSPHATE                    
FORMUL   2   MG    2(MG 2+)                                                     
FORMUL   4   CL    CL 1-                                                        
FORMUL   5  APC    C11 H18 N5 O12 P3                                            
FORMUL   6  PH2    C7 H9 N5 O2                                                  
FORMUL   7  HOH   *412(H2 O)                                                    
HELIX    1   1 SER A   13  ASP A   27  1                                  15    
HELIX    2   2 ALA A   65  GLN A   80  1                                  16    
HELIX    3   3 ASP A  117  ASN A  120  5                                   4    
HELIX    4   4 ARG A  121  ALA A  132  1                                  12    
HELIX    5   5 MET A  142  ALA A  151  1                                  10    
SHEET    1   A 4 ASP A  95  PHE A 101  0                                        
SHEET    2   A 4 VAL A   2  SER A   9 -1  N  TYR A   4   O  LEU A 100           
SHEET    3   A 4 TYR A  53  THR A  62 -1  N  LEU A  54   O  SER A   9           
SHEET    4   A 4 SER A  31  VAL A  36 -1  O  HIS A  32   N  GLU A  61           
SHEET    1   B 5 ASP A  95  PHE A 101  0                                        
SHEET    2   B 5 VAL A   2  SER A   9 -1  N  TYR A   4   O  LEU A 100           
SHEET    3   B 5 TYR A  53  THR A  62 -1  N  LEU A  54   O  SER A   9           
SHEET    4   B 5 TYR A  40  THR A  42 -1  O  TYR A  40   N  ASN A  55           
SHEET    5   B 5 ASN A 156  LYS A 157 -1  O  ASN A 156   N  ARG A  41           
SHEET    1   C 2 ILE A 106  ASN A 107  0                                        
SHEET    2   C 2 THR A 112  VAL A 113 -1  O  VAL A 113   N  ILE A 106           
LINK         OD1 ASP A  95                MG    MG A 161     1555   1555  2.09  
LINK         OD2 ASP A  95                MG    MG A 162     1555   1555  2.10  
LINK         OD1 ASP A  97                MG    MG A 161     1555   1555  2.08  
LINK         OD2 ASP A  97                MG    MG A 162     1555   1555  2.02  
LINK        MG    MG A 161                 O1A APC A 171     1555   1555  2.10  
LINK        MG    MG A 161                 O1B APC A 171     1555   1555  2.08  
LINK        MG    MG A 161                 O   HOH A 212     1555   1555  2.04  
LINK        MG    MG A 161                 O   HOH A 226     1555   1555  2.14  
LINK        MG    MG A 162                 O1B APC A 171     1555   1555  2.12  
LINK        MG    MG A 162                 O3G APC A 171     1555   1555  2.05  
LINK        MG    MG A 162                 O4  PH2 A 181     1555   1555  2.10  
LINK        MG    MG A 162                 O   HOH A 216     1555   1555  2.18  
CISPEP   1 VAL A  113    PRO A  114          0        -7.23                     
SITE     1 AC1  6 ASP A  95  ASP A  97   MG A 162  APC A 171                    
SITE     2 AC1  6 HOH A 212  HOH A 226                                          
SITE     1 AC2  6 ASP A  95  ASP A  97   MG A 161  APC A 171                    
SITE     2 AC2  6 PH2 A 181  HOH A 216                                          
SITE     1 AC3  6 LYS A 119  PHE A 137  PRO A 138  ASP A 139                    
SITE     2 AC3  6 HOH A 219  HOH A 362                                          
SITE     1 AC4 29 GLN A  74  ARG A  82  ARG A  84  TRP A  89                    
SITE     2 AC4 29 ASP A  95  ASP A  97  ILE A  98  ARG A 110                    
SITE     3 AC4 29 LEU A 111  THR A 112  HIS A 115  TYR A 116                    
SITE     4 AC4 29 ARG A 121   MG A 161   MG A 162  PH2 A 181                    
SITE     5 AC4 29 HOH A 212  HOH A 215  HOH A 216  HOH A 226                    
SITE     6 AC4 29 HOH A 254  HOH A 255  HOH A 342  HOH A 351                    
SITE     7 AC4 29 HOH A 363  HOH A 421  HOH A 448  HOH A 505                    
SITE     8 AC4 29 HOH A 594                                                     
SITE     1 AC5 14 THR A  42  PRO A  43  PRO A  44  LEU A  45                    
SITE     2 AC5 14 TYR A  53  ASN A  55  ASP A  95  PHE A 123                    
SITE     3 AC5 14  MG A 162  APC A 171  HOH A 205  HOH A 216                    
SITE     4 AC5 14 HOH A 244  HOH A 380                                          
CRYST1   73.612   37.783   57.970  90.00 117.04  90.00 C 1 2 1       4          
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      0.013585  0.000000  0.006934        0.00000                         
SCALE2      0.000000  0.026467  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.019367        0.00000