HEADER    HYDROLASE (PHOSPHORIC MONOESTER)        02-JUN-95   1ALJ              
TITLE     ALKALINE PHOSPHATASE MUTANT (H412N)                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ALKALINE PHOSPHATASE;                                      
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 EC: 3.1.3.1;                                                         
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 STRAIN: EK1498;                                                      
SOURCE   5 GENE: PHOA;                                                          
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PEK202;                                   
SOURCE   9 EXPRESSION_SYSTEM_GENE: PHOA                                         
KEYWDS    HYDROLASE (PHOSPHORIC MONOESTER), TRANSFERASE (PHOSPHO, ALCOHOL       
KEYWDS   2 ACCEPTOR)                                                            
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    L.MA,T.T.TIBBITTS,E.R.KANTROWITZ                                      
REVDAT   4   06-NOV-24 1ALJ    1       REMARK                                   
REVDAT   3   03-NOV-21 1ALJ    1       REMARK SEQADV LINK                       
REVDAT   2   24-FEB-09 1ALJ    1       VERSN                                    
REVDAT   1   14-NOV-95 1ALJ    0                                                
JRNL        AUTH   L.MA,T.T.TIBBITTS,E.R.KANTROWITZ                             
JRNL        TITL   ESCHERICHIA COLI ALKALINE PHOSPHATASE: X-RAY STRUCTURAL      
JRNL        TITL 2 STUDIES OF A MUTANT ENZYME (HIS-412-->ASN) AT ONE OF THE     
JRNL        TITL 3 CATALYTICALLY IMPORTANT ZINC BINDING SITES.                  
JRNL        REF    PROTEIN SCI.                  V.   4  1498 1995              
JRNL        REFN                   ISSN 0961-8368                               
JRNL        PMID   8520475                                                      
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   E.E.KIM,H.W.WYCKOFF                                          
REMARK   1  TITL   REACTION MECHANISM OF ALKALINE PHOSPHATASE BASED ON CRYSTAL  
REMARK   1  TITL 2 STRUCTURES. TWO METAL ION CATALYSIS                          
REMARK   1  REF    J.MOL.BIOL.                   V. 218   449 1991              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   L.MA,E.R.KANTROWITZ                                          
REMARK   1  TITL   MUTATIONS AT HISTIDINE 412 ALTER ZINC BINDING AND ELIMINATE  
REMARK   1  TITL 2 TRANSFERASE ACTIVITY IN ESCHERICHIA COLI ALKALINE            
REMARK   1  TITL 3 PHOSPHATASE                                                  
REMARK   1  REF    J.BIOL.CHEM.                  V. 269 31614 1994              
REMARK   1  REFN                   ISSN 0021-9258                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.60 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 8.00                           
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)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 38875                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.166                           
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3   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) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 6558                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 14                                      
REMARK   3   SOLVENT ATOMS            : 219                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.27                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.020                           
REMARK   3   BOND ANGLES            (DEGREES) : 2.010                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 22.80                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.670                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  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 1ALJ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000170966.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 14-MAY-93                          
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.54                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : AREA DETECTOR                      
REMARK 200  DETECTOR MANUFACTURER          : ADSC                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : ADSC                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 36882                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 26.300                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 3.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.4                               
REMARK 200  DATA REDUNDANCY                : 4.600                              
REMARK 200  R MERGE                    (I) : 0.10800                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 62.79                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.31                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: THIS ENTRY IS A MUTANT ALKALINE          
REMARK 280  PHOSPHATE (H412N) IN WHICH HIS 412 IS REPLACED BY ASN,              
REMARK 280  DETERMINED WITH CRYSTALS SOAKED IN STABILIZATION BUFFER             
REMARK 280  CONTAINING NO ADDED ZINC. THERE IS ONE ZINC AND ONE MAGNESIUM       
REMARK 280  COMPLEXED WITH INORGANIC PHOSPHATE BOUND IN EACH OF THE TWO         
REMARK 280  ACTIVE SITES.                                                       
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 2 2 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,Y,-Z                                                 
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   X+1/2,-Y+1/2,-Z+1/2                                     
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        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       97.38000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       83.87000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       38.11500            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       97.38000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       83.87000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       38.11500            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       97.38000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       83.87000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       38.11500            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       97.38000            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       83.87000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       38.11500            
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: THERE IS A DIMER (IDENTICAL CHAINS OF 449 RESIDUES) PER      
REMARK 300 ASYMMETRIC UNIT. THESE SUBUNITS, DESIGNATED "A" AND "B".             
REMARK 300 THE FIRST THREE RESIDUES WERE DELETED DURING THE                     
REMARK 300 REFINEMENT.                                                          
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: 8300 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 27290 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -82.0 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     THR A     1                                                      
REMARK 465     PRO A     2                                                      
REMARK 465     GLU A     3                                                      
REMARK 465     THR B     1                                                      
REMARK 465     PRO B     2                                                      
REMARK 465     GLU B     3                                                      
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    ALA A  88   CA    ALA A  88   CB     -0.131                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASN A   9      117.72   -161.70                                   
REMARK 500    HIS A  86       38.50   -143.03                                   
REMARK 500    ASN A 293      145.43     64.60                                   
REMARK 500    SER A 325       -8.88    -49.90                                   
REMARK 500    ALA A 332       10.27    -68.50                                   
REMARK 500    HIS A 372     -168.14   -121.62                                   
REMARK 500    GLU A 407       45.93    -82.11                                   
REMARK 500    ASP A 408      -72.80     63.04                                   
REMARK 500    SER A 409      105.03    -53.81                                   
REMARK 500    ALA B  88     -167.54   -103.01                                   
REMARK 500    TYR B  98      -19.39    -48.86                                   
REMARK 500    ASN B 293      144.76     57.46                                   
REMARK 500    SER B 325       -8.11    -50.59                                   
REMARK 500    ALA B 332        6.52    -68.25                                   
REMARK 500    GLU B 407       45.36    -82.50                                   
REMARK 500    ASP B 408      -74.31     63.91                                   
REMARK 500    SER B 409      106.49    -53.06                                   
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                              ZN A 451  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A  51   OD2                                                    
REMARK 620 2 SER A 102   OG   96.1                                              
REMARK 620 3 ASP A 369   OD2  96.4  85.3                                        
REMARK 620 4 HIS A 370   NE2 172.6  80.6  90.0                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 452  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A  51   OD1                                                    
REMARK 620 2 ASP A  51   OD2  43.5                                              
REMARK 620 3 THR A 155   OG1  74.2 116.5                                        
REMARK 620 4 GLU A 322   OE2  61.7  87.9  67.7                                  
REMARK 620 5 HOH A 454   O   116.9  77.0 142.1 150.2                            
REMARK 620 6 HOH A 500   O   147.7 133.4  90.9 138.7  60.0                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              ZN B 451  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP B  51   OD2                                                    
REMARK 620 2 SER B 102   OG  102.9                                              
REMARK 620 3 ASP B 369   OD2 102.6  92.0                                        
REMARK 620 4 HIS B 370   NE2 158.0  83.0  98.3                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG B 452  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP B  51   OD1                                                    
REMARK 620 2 THR B 155   OG1  70.3                                              
REMARK 620 3 GLU B 322   OE2  54.3  66.4                                        
REMARK 620 4 HOH B 519   O   109.2 150.8 138.5                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: A                                                   
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: CATALYTICALLY ACTIVE SITE ON A SUBUNIT             
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: B                                                   
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: CATALYTICALLY ACTIVE SITE ON B SUBUNIT             
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 451                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 452                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 453                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 451                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 452                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 B 453                 
DBREF  1ALJ A    1   449  UNP    P00634   PPB_ECOLI       23    471             
DBREF  1ALJ B    1   449  UNP    P00634   PPB_ECOLI       23    471             
SEQADV 1ALJ ASN A  412  UNP  P00634    HIS   434 ENGINEERED MUTATION            
SEQADV 1ALJ ASN B  412  UNP  P00634    HIS   434 ENGINEERED MUTATION            
SEQRES   1 A  449  THR PRO GLU MET PRO VAL LEU GLU ASN ARG ALA ALA GLN          
SEQRES   2 A  449  GLY ASP ILE THR ALA PRO GLY GLY ALA ARG ARG LEU THR          
SEQRES   3 A  449  GLY ASP GLN THR ALA ALA LEU ARG ASP SER LEU SER ASP          
SEQRES   4 A  449  LYS PRO ALA LYS ASN ILE ILE LEU LEU ILE GLY ASP GLY          
SEQRES   5 A  449  MET GLY ASP SER GLU ILE THR ALA ALA ARG ASN TYR ALA          
SEQRES   6 A  449  GLU GLY ALA GLY GLY PHE PHE LYS GLY ILE ASP ALA LEU          
SEQRES   7 A  449  PRO LEU THR GLY GLN TYR THR HIS TYR ALA LEU ASN LYS          
SEQRES   8 A  449  LYS THR GLY LYS PRO ASP TYR VAL THR ASP SER ALA ALA          
SEQRES   9 A  449  SER ALA THR ALA TRP SER THR GLY VAL LYS THR TYR ASN          
SEQRES  10 A  449  GLY ALA LEU GLY VAL ASP ILE HIS GLU LYS ASP HIS PRO          
SEQRES  11 A  449  THR ILE LEU GLU MET ALA LYS ALA ALA GLY LEU ALA THR          
SEQRES  12 A  449  GLY ASN VAL SER THR ALA GLU LEU GLN ASP ALA THR PRO          
SEQRES  13 A  449  ALA ALA LEU VAL ALA HIS VAL THR SER ARG LYS CYS TYR          
SEQRES  14 A  449  GLY PRO SER ALA THR SER GLU LYS CYS PRO GLY ASN ALA          
SEQRES  15 A  449  LEU GLU LYS GLY GLY LYS GLY SER ILE THR GLU GLN LEU          
SEQRES  16 A  449  LEU ASN ALA ARG ALA ASP VAL THR LEU GLY GLY GLY ALA          
SEQRES  17 A  449  LYS THR PHE ALA GLU THR ALA THR ALA GLY GLU TRP GLN          
SEQRES  18 A  449  GLY LYS THR LEU ARG GLU GLN ALA GLN ALA ARG GLY TYR          
SEQRES  19 A  449  GLN LEU VAL SER ASP ALA ALA SER LEU ASN SER VAL THR          
SEQRES  20 A  449  GLU ALA ASN GLN GLN LYS PRO LEU LEU GLY LEU PHE ALA          
SEQRES  21 A  449  ASP GLY ASN MET PRO VAL ARG TRP LEU GLY PRO LYS ALA          
SEQRES  22 A  449  THR TYR HIS GLY ASN ILE ASP LYS PRO ALA VAL THR CYS          
SEQRES  23 A  449  THR PRO ASN PRO GLN ARG ASN ASP SER VAL PRO THR LEU          
SEQRES  24 A  449  ALA GLN MET THR ASP LYS ALA ILE GLU LEU LEU SER LYS          
SEQRES  25 A  449  ASN GLU LYS GLY PHE PHE LEU GLN VAL GLU GLY ALA SER          
SEQRES  26 A  449  ILE ASP LYS GLN ASP HIS ALA ALA ASN PRO CYS GLY GLN          
SEQRES  27 A  449  ILE GLY GLU THR VAL ASP LEU ASP GLU ALA VAL GLN ARG          
SEQRES  28 A  449  ALA LEU GLU PHE ALA LYS LYS GLU GLY ASN THR LEU VAL          
SEQRES  29 A  449  ILE VAL THR ALA ASP HIS ALA HIS ALA SER GLN ILE VAL          
SEQRES  30 A  449  ALA PRO ASP THR LYS ALA PRO GLY LEU THR GLN ALA LEU          
SEQRES  31 A  449  ASN THR LYS ASP GLY ALA VAL MET VAL MET SER TYR GLY          
SEQRES  32 A  449  ASN SER GLU GLU ASP SER GLN GLU ASN THR GLY SER GLN          
SEQRES  33 A  449  LEU ARG ILE ALA ALA TYR GLY PRO HIS ALA ALA ASN VAL          
SEQRES  34 A  449  VAL GLY LEU THR ASP GLN THR ASP LEU PHE TYR THR MET          
SEQRES  35 A  449  LYS ALA ALA LEU GLY LEU LYS                                  
SEQRES   1 B  449  THR PRO GLU MET PRO VAL LEU GLU ASN ARG ALA ALA GLN          
SEQRES   2 B  449  GLY ASP ILE THR ALA PRO GLY GLY ALA ARG ARG LEU THR          
SEQRES   3 B  449  GLY ASP GLN THR ALA ALA LEU ARG ASP SER LEU SER ASP          
SEQRES   4 B  449  LYS PRO ALA LYS ASN ILE ILE LEU LEU ILE GLY ASP GLY          
SEQRES   5 B  449  MET GLY ASP SER GLU ILE THR ALA ALA ARG ASN TYR ALA          
SEQRES   6 B  449  GLU GLY ALA GLY GLY PHE PHE LYS GLY ILE ASP ALA LEU          
SEQRES   7 B  449  PRO LEU THR GLY GLN TYR THR HIS TYR ALA LEU ASN LYS          
SEQRES   8 B  449  LYS THR GLY LYS PRO ASP TYR VAL THR ASP SER ALA ALA          
SEQRES   9 B  449  SER ALA THR ALA TRP SER THR GLY VAL LYS THR TYR ASN          
SEQRES  10 B  449  GLY ALA LEU GLY VAL ASP ILE HIS GLU LYS ASP HIS PRO          
SEQRES  11 B  449  THR ILE LEU GLU MET ALA LYS ALA ALA GLY LEU ALA THR          
SEQRES  12 B  449  GLY ASN VAL SER THR ALA GLU LEU GLN ASP ALA THR PRO          
SEQRES  13 B  449  ALA ALA LEU VAL ALA HIS VAL THR SER ARG LYS CYS TYR          
SEQRES  14 B  449  GLY PRO SER ALA THR SER GLU LYS CYS PRO GLY ASN ALA          
SEQRES  15 B  449  LEU GLU LYS GLY GLY LYS GLY SER ILE THR GLU GLN LEU          
SEQRES  16 B  449  LEU ASN ALA ARG ALA ASP VAL THR LEU GLY GLY GLY ALA          
SEQRES  17 B  449  LYS THR PHE ALA GLU THR ALA THR ALA GLY GLU TRP GLN          
SEQRES  18 B  449  GLY LYS THR LEU ARG GLU GLN ALA GLN ALA ARG GLY TYR          
SEQRES  19 B  449  GLN LEU VAL SER ASP ALA ALA SER LEU ASN SER VAL THR          
SEQRES  20 B  449  GLU ALA ASN GLN GLN LYS PRO LEU LEU GLY LEU PHE ALA          
SEQRES  21 B  449  ASP GLY ASN MET PRO VAL ARG TRP LEU GLY PRO LYS ALA          
SEQRES  22 B  449  THR TYR HIS GLY ASN ILE ASP LYS PRO ALA VAL THR CYS          
SEQRES  23 B  449  THR PRO ASN PRO GLN ARG ASN ASP SER VAL PRO THR LEU          
SEQRES  24 B  449  ALA GLN MET THR ASP LYS ALA ILE GLU LEU LEU SER LYS          
SEQRES  25 B  449  ASN GLU LYS GLY PHE PHE LEU GLN VAL GLU GLY ALA SER          
SEQRES  26 B  449  ILE ASP LYS GLN ASP HIS ALA ALA ASN PRO CYS GLY GLN          
SEQRES  27 B  449  ILE GLY GLU THR VAL ASP LEU ASP GLU ALA VAL GLN ARG          
SEQRES  28 B  449  ALA LEU GLU PHE ALA LYS LYS GLU GLY ASN THR LEU VAL          
SEQRES  29 B  449  ILE VAL THR ALA ASP HIS ALA HIS ALA SER GLN ILE VAL          
SEQRES  30 B  449  ALA PRO ASP THR LYS ALA PRO GLY LEU THR GLN ALA LEU          
SEQRES  31 B  449  ASN THR LYS ASP GLY ALA VAL MET VAL MET SER TYR GLY          
SEQRES  32 B  449  ASN SER GLU GLU ASP SER GLN GLU ASN THR GLY SER GLN          
SEQRES  33 B  449  LEU ARG ILE ALA ALA TYR GLY PRO HIS ALA ALA ASN VAL          
SEQRES  34 B  449  VAL GLY LEU THR ASP GLN THR ASP LEU PHE TYR THR MET          
SEQRES  35 B  449  LYS ALA ALA LEU GLY LEU LYS                                  
HET     ZN  A 451       1                                                       
HET     MG  A 452       1                                                       
HET    PO4  A 453       5                                                       
HET     ZN  B 451       1                                                       
HET     MG  B 452       1                                                       
HET    PO4  B 453       5                                                       
HETNAM      ZN ZINC ION                                                         
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     PO4 PHOSPHATE ION                                                    
FORMUL   3   ZN    2(ZN 2+)                                                     
FORMUL   4   MG    2(MG 2+)                                                     
FORMUL   5  PO4    2(O4 P 3-)                                                   
FORMUL   9  HOH   *219(H2 O)                                                    
HELIX    1   1 THR A   30  SER A   36  1                                   7    
HELIX    2   2 ASP A   55  GLU A   66  1                                  12    
HELIX    3   3 ILE A   75  ALA A   77  5                                   3    
HELIX    4   4 SER A  102  THR A  111  1                                  10    
HELIX    5   5 ILE A  132  ALA A  138  1                                   7    
HELIX    6   6 ALA A  154  LEU A  159  1                                   6    
HELIX    7   7 PRO A  171  LYS A  177  1                                   7    
HELIX    8   8 LEU A  183  LYS A  185  5                                   3    
HELIX    9   9 ILE A  191  ALA A  198  1                                   8    
HELIX   10  10 THR A  210  ALA A  212  5                                   3    
HELIX   11  11 LEU A  225  ARG A  232  1                                   8    
HELIX   12  12 ALA A  240  SER A  245  1                                   6    
HELIX   13  13 GLY A  277  ASP A  280  1                                   4    
HELIX   14  14 PRO A  290  ARG A  292  5                                   3    
HELIX   15  15 LEU A  299  LYS A  312  1                                  14    
HELIX   16  16 SER A  325  HIS A  331  1                                   7    
HELIX   17  17 PRO A  335  GLU A  359  1                                  25    
HELIX   18  18 ALA A  426  VAL A  429  5                                   4    
HELIX   19  19 GLN A  435  ALA A  445  1                                  11    
HELIX   20  20 THR B   30  SER B   36  1                                   7    
HELIX   21  21 ASP B   55  GLU B   66  1                                  12    
HELIX   22  22 SER B  102  THR B  111  1                                  10    
HELIX   23  23 ILE B  132  ALA B  138  1                                   7    
HELIX   24  24 ALA B  154  LEU B  159  1                                   6    
HELIX   25  25 PRO B  171  LYS B  177  1                                   7    
HELIX   26  26 LEU B  183  LYS B  185  5                                   3    
HELIX   27  27 ILE B  191  ALA B  198  1                                   8    
HELIX   28  28 ALA B  208  ALA B  212  5                                   5    
HELIX   29  29 LEU B  225  ARG B  232  1                                   8    
HELIX   30  30 ALA B  240  SER B  245  1                                   6    
HELIX   31  31 GLY B  277  ASP B  280  1                                   4    
HELIX   32  32 PRO B  290  ARG B  292  5                                   3    
HELIX   33  33 LEU B  299  LYS B  312  1                                  14    
HELIX   34  34 SER B  325  HIS B  331  1                                   7    
HELIX   35  35 PRO B  335  GLU B  359  1                                  25    
HELIX   36  36 ALA B  426  VAL B  429  5                                   4    
HELIX   37  37 GLN B  435  ALA B  445  1                                  11    
SHEET    1   A10 GLN A 235  VAL A 237  0                                        
SHEET    2   A10 LEU A 255  LEU A 258  1  N  LEU A 256   O  GLN A 235           
SHEET    3   A10 VAL A 202  GLY A 205  1  N  THR A 203   O  LEU A 255           
SHEET    4   A10 ALA A 142  SER A 147  1  N  ASN A 145   O  VAL A 202           
SHEET    5   A10 PHE A 317  GLY A 323  1  N  PHE A 318   O  ALA A 142           
SHEET    6   A10 ASN A  44  GLY A  50  1  N  ILE A  45   O  LEU A 319           
SHEET    7   A10 THR A 362  ALA A 368  1  N  LEU A 363   O  ASN A  44           
SHEET    8   A10 LEU A 417  TYR A 422 -1  N  TYR A 422   O  VAL A 364           
SHEET    9   A10 LEU A  80  THR A  85 -1  N  TYR A  84   O  LEU A 417           
SHEET   10   A10 GLY A 431  ASP A 434  1  N  GLY A 431   O  GLN A  83           
SHEET    1   B 3 GLN A 375  VAL A 377  0                                        
SHEET    2   B 3 VAL A 397  TYR A 402 -1  N  SER A 401   O  GLN A 375           
SHEET    3   B 3 LEU A 386  ASN A 391 -1  N  LEU A 390   O  MET A 398           
SHEET    1   C10 GLN B 235  VAL B 237  0                                        
SHEET    2   C10 LEU B 255  LEU B 258  1  N  LEU B 256   O  GLN B 235           
SHEET    3   C10 VAL B 202  GLY B 205  1  N  THR B 203   O  LEU B 255           
SHEET    4   C10 ALA B 142  SER B 147  1  N  ASN B 145   O  VAL B 202           
SHEET    5   C10 PHE B 317  GLY B 323  1  N  PHE B 318   O  ALA B 142           
SHEET    6   C10 ASN B  44  GLY B  50  1  N  ILE B  45   O  LEU B 319           
SHEET    7   C10 THR B 362  ALA B 368  1  N  LEU B 363   O  ASN B  44           
SHEET    8   C10 LEU B 417  TYR B 422 -1  N  TYR B 422   O  VAL B 364           
SHEET    9   C10 LEU B  80  THR B  85 -1  N  TYR B  84   O  LEU B 417           
SHEET   10   C10 GLY B 431  ASP B 434  1  N  GLY B 431   O  GLN B  83           
SHEET    1   D 3 GLN B 375  VAL B 377  0                                        
SHEET    2   D 3 VAL B 397  TYR B 402 -1  N  SER B 401   O  GLN B 375           
SHEET    3   D 3 LEU B 386  ASN B 391 -1  N  LEU B 390   O  MET B 398           
SSBOND   1 CYS A  168    CYS A  178                          1555   1555  2.01  
SSBOND   2 CYS A  286    CYS A  336                          1555   1555  2.02  
SSBOND   3 CYS B  168    CYS B  178                          1555   1555  2.00  
SSBOND   4 CYS B  286    CYS B  336                          1555   1555  2.06  
LINK         OD2 ASP A  51                ZN    ZN A 451     1555   1555  2.76  
LINK         OD1 ASP A  51                MG    MG A 452     1555   1555  2.74  
LINK         OD2 ASP A  51                MG    MG A 452     1555   1555  3.11  
LINK         OG  SER A 102                ZN    ZN A 451     1555   1555  2.67  
LINK         OG1 THR A 155                MG    MG A 452     1555   1555  2.72  
LINK         OE2 GLU A 322                MG    MG A 452     1555   1555  2.73  
LINK         OD2 ASP A 369                ZN    ZN A 451     1555   1555  2.17  
LINK         NE2 HIS A 370                ZN    ZN A 451     1555   1555  2.17  
LINK        MG    MG A 452                 O   HOH A 454     1555   1555  2.92  
LINK        MG    MG A 452                 O   HOH A 500     1555   1555  2.47  
LINK         OD2 ASP B  51                ZN    ZN B 451     1555   1555  2.59  
LINK         OD1 ASP B  51                MG    MG B 452     1555   1555  3.08  
LINK         OG  SER B 102                ZN    ZN B 451     1555   1555  2.70  
LINK         OG1 THR B 155                MG    MG B 452     1555   1555  2.52  
LINK         OE2 GLU B 322                MG    MG B 452     1555   1555  3.00  
LINK         OD2 ASP B 369                ZN    ZN B 451     1555   1555  1.97  
LINK         NE2 HIS B 370                ZN    ZN B 451     1555   1555  2.27  
LINK        MG    MG B 452                 O   HOH B 519     1555   1555  3.00  
SITE     1   A 13 ASP A 327  HIS A 331  ASN A 412   ZN A 451                    
SITE     2   A 13  MG A 452  PO4 A 453  ASP A  51  ASP A 369                    
SITE     3   A 13 HIS A 370  THR A 155  GLU A 322  ARG A 166                    
SITE     4   A 13 SER A 102                                                     
SITE     1   B 13 ASP B 327  HIS B 331  ASN B 412   ZN B 451                    
SITE     2   B 13  MG B 452  PO4 B 453  ASP B  51  ASP B 369                    
SITE     3   B 13 HIS B 370  THR B 155  GLU B 322  ARG B 166                    
SITE     4   B 13 SER B 102                                                     
SITE     1 AC1  6 ASP A  51  SER A 102  ASP A 327  ASP A 369                    
SITE     2 AC1  6 HIS A 370  PO4 A 453                                          
SITE     1 AC2  6 ASP A  51  ASP A 153  THR A 155  GLU A 322                    
SITE     2 AC2  6 HOH A 454  HOH A 500                                          
SITE     1 AC3  9 ASP A 101  SER A 102  ARG A 166  ASP A 327                    
SITE     2 AC3  9 HIS A 331  HIS A 370  ASN A 412   ZN A 451                    
SITE     3 AC3  9 HOH A 454                                                     
SITE     1 AC4  5 ASP B  51  SER B 102  ASP B 327  ASP B 369                    
SITE     2 AC4  5 HIS B 370                                                     
SITE     1 AC5  5 ASP B  51  ASP B 153  THR B 155  GLU B 322                    
SITE     2 AC5  5 HOH B 519                                                     
SITE     1 AC6  8 ASP B 101  SER B 102  ARG B 166  ASP B 327                    
SITE     2 AC6  8 HIS B 331  HIS B 370  ASN B 412  HOH B 519                    
CRYST1  194.760  167.740   76.230  90.00  90.00  90.00 I 2 2 2      16          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.005135  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.005962  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.013118        0.00000