HEADER    HYDROLASE                               08-SEP-06   2IAX              
TITLE     CRYSTAL STRUCTURE OF SQUID GANGLION DFPASE D232S MUTANT               
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: DIISOPROPYLFLUOROPHOSPHATASE;                              
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: DFPASE;                                                     
COMPND   5 EC: 3.1.8.2;                                                         
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES;                                                       
COMPND   8 OTHER_DETAILS: PHOSPHOTRIESTERASE                                    
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: LOLIGO VULGARIS;                                
SOURCE   3 ORGANISM_TAXID: 6622;                                                
SOURCE   4 ORGAN: HEAD GANGLION;                                                
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21;                            
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 511693;                                     
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: BL21;                                      
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PKKHISND                                  
KEYWDS    PHOSPHOTRIESTERASE, BETA-PROPELLER, CALCIUM-BINDING SITE, HYDROLASE   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    V.KATSEMI,C.LUECKE,J.KOEPKE,F.LOEHR,S.MAURER,G.FRITZSCH,H.RUETERJANS  
REVDAT   5   30-AUG-23 2IAX    1       REMARK                                   
REVDAT   4   20-OCT-21 2IAX    1       REMARK SEQADV LINK                       
REVDAT   3   18-OCT-17 2IAX    1       REMARK                                   
REVDAT   2   24-FEB-09 2IAX    1       VERSN                                    
REVDAT   1   26-SEP-06 2IAX    0                                                
JRNL        AUTH   V.KATSEMI,C.LUECKE,J.KOEPKE,F.LOEHR,S.MAURER,G.FRITZSCH,     
JRNL        AUTH 2 H.RUETERJANS                                                 
JRNL        TITL   MUTATIONAL AND STRUCTURAL STUDIES OF THE                     
JRNL        TITL 2 DIISOPROPYLFLUOROPHOSPHATASE FROM LOLIGO VULGARIS SHED NEW   
JRNL        TITL 3 LIGHT ON THE CATALYTIC MECHANISM OF THE ENZYME               
JRNL        REF    BIOCHEMISTRY                  V.  44  9022 2005              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   15966726                                                     
JRNL        DOI    10.1021/BI0500675                                            
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   E.I.SCHARFF,C.LUECKE,G.FRITZSCH,J.KOEPKE,J.HARTLEIB,S.DIERL, 
REMARK   1  AUTH 2 H.RUETERJANS                                                 
REMARK   1  TITL   CRYSTALLIZATION AND PRELIMINARY X-RAY CRYSTALLOGRAPHIC       
REMARK   1  TITL 2 ANALYSIS OF DFPASE FROM LOLIGO VULGARIS                      
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.D      V.  57   148 2001              
REMARK   1  REFN                   ISSN 0907-4449                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   E.I.SCHARFF,J.KOEPKE,G.FRITZSCH,C.LUECKE,H.RUETERJANS        
REMARK   1  TITL   CRYSTAL STRUCTURE OF DIISOPROPYLFLUOROPHOSPHATASE FROM       
REMARK   1  TITL 2 LOLIGO VULGARIS                                              
REMARK   1  REF    STRUCTURE                     V.   9   493 2001              
REMARK   1  REFN                   ISSN 0969-2126                               
REMARK   1  PMID   11435114                                                     
REMARK   1  DOI    10.1016/S0969-2126(01)00610-4                                
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   J.KOEPKE,E.I.SCHARFF,C.LUECKE,H.RUETERJANS,G.FRITZSCH        
REMARK   1  TITL   STATISTICAL ANALYSIS OF CRYSTALLOGRAPHIC DATA OBTAINED FROM  
REMARK   1  TITL 2 SQUID GANGLION DFPASE AT 0.85 A RESOLUTION                   
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.D      V.  59  1744 2003              
REMARK   1  REFN                   ISSN 0907-4449                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.0                                           
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : ENGH & HUBER                                  
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 59.76                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 120843                         
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 + TEST SET) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.179                           
REMARK   3   FREE R VALUE                     : 0.208                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 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   REFLECTION IN BIN     (WORKING SET) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE SET COUNT          : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2449                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 1                                       
REMARK   3   SOLVENT ATOMS            : 507                                     
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 OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): NULL          
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): NULL          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL          
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : NULL                          
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : NULL                          
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):  NULL ;  NULL ;  NULL       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : NULL                                          
REMARK   3   ION PROBE RADIUS   : NULL                                          
REMARK   3   SHRINKAGE RADIUS   : NULL                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2IAX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 14-SEP-06.                  
REMARK 100 THE DEPOSITION ID IS D_1000039356.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 07-MAR-03                          
REMARK 200  TEMPERATURE           (KELVIN) : 120                                
REMARK 200  PH                             : 6.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : EMBL/DESY, HAMBURG                 
REMARK 200  BEAMLINE                       : BW7B                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.8424                             
REMARK 200  MONOCHROMATOR                  : TRIANGULAR SI                      
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MAR SCANNER 345 MM PLATE           
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 8200                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.100                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 59.760                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: PDB ENTRY 1E1A                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 44.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.20                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 12% PEG 6000, 0.1 M MES, PH 6.5, VAPOR   
REMARK 280  DIFFUSION, HANGING DROP, TEMPERATURE 289K                           
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
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       21.54050            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       43.31550            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       41.02650            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000       43.31550            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       21.54050            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       41.02650            
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 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    HOH A   426     O    HOH A   798              1.45            
REMARK 500   NH1  ARG A    50     O    HOH A   490              1.62            
REMARK 500   O    HOH A   538     O    HOH A   539              1.90            
REMARK 500   O    HOH A   752     O    HOH A   795              1.93            
REMARK 500   O    HOH A   434     O    HOH A   435              2.13            
REMARK 500   O    HOH A   692     O    HOH A   743              2.13            
REMARK 500   OE1  GLU A   194     O    HOH A   650              2.14            
REMARK 500   O    THR A   160     O    HOH A   616              2.16            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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    HOH A   571     O    HOH A   766     3655     0.51            
REMARK 500   NH2  ARG A   115     O    HOH A   729     3555     1.30            
REMARK 500   OE2  GLU A   127     O    HOH A   610     1655     2.13            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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    CYS A  76   CB    CYS A  76   SG     -0.108                       
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    ALA A  20      126.72    -31.96                                   
REMARK 500    ALA A  45       47.92   -153.54                                   
REMARK 500    SER A 147       40.03    -91.23                                   
REMARK 500    ALA A 170       37.69     70.33                                   
REMARK 500    PHE A 173       66.93     68.62                                   
REMARK 500    ASN A 175     -100.30   -138.60                                   
REMARK 500    TYR A 188      -10.19   -142.79                                   
REMARK 500    ASP A 229     -101.62   -112.35                                   
REMARK 500    PRO A 266       39.44    -80.82                                   
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                              CA A 401  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A  21   OE2                                                    
REMARK 620 2 ASN A 120   OD1 113.6                                              
REMARK 620 3 ASN A 175   OD1 156.4  73.3                                        
REMARK 620 4 ASP A 229   OD1  90.1 146.7  76.1                                  
REMARK 620 5 HOH A 447   O    77.4  72.2 125.4 138.6                            
REMARK 620 6 HOH A 448   O    76.0  94.4  81.0  67.9 142.1                      
REMARK 620 7 HOH A 578   O   122.2 105.6  74.1  77.8  76.2 141.5                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 401                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1E1A   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF WILD-TYPE DFPASE AT 1.8 ANGSTROMS RESOLUTION    
REMARK 900 RELATED ID: 1PJX   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF WILD-TYPE DFPASE AT 0.85 ANGSTROMS RESOLUTION   
REMARK 900 RELATED ID: 2IAO   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2IAP   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2IAQ   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2IAR   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2IAS   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2IAT   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2IAU   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2IAV   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2IAW   RELATED DB: PDB                                   
DBREF  2IAX A    3   314  UNP    Q7SIG4   DFPA_LOLVU       3    314             
SEQADV 2IAX SER A  232  UNP  Q7SIG4    ASP   232 ENGINEERED MUTATION            
SEQRES   1 A  312  ILE PRO VAL ILE GLU PRO LEU PHE THR LYS VAL THR GLU          
SEQRES   2 A  312  ASP ILE PRO GLY ALA GLU GLY PRO VAL PHE ASP LYS ASN          
SEQRES   3 A  312  GLY ASP PHE TYR ILE VAL ALA PRO GLU VAL GLU VAL ASN          
SEQRES   4 A  312  GLY LYS PRO ALA GLY GLU ILE LEU ARG ILE ASP LEU LYS          
SEQRES   5 A  312  THR GLY LYS LYS THR VAL ILE CYS LYS PRO GLU VAL ASN          
SEQRES   6 A  312  GLY TYR GLY GLY ILE PRO ALA GLY CYS GLN CYS ASP ARG          
SEQRES   7 A  312  ASP ALA ASN GLN LEU PHE VAL ALA ASP MET ARG LEU GLY          
SEQRES   8 A  312  LEU LEU VAL VAL GLN THR ASP GLY THR PHE GLU GLU ILE          
SEQRES   9 A  312  ALA LYS LYS ASP SER GLU GLY ARG ARG MET GLN GLY CYS          
SEQRES  10 A  312  ASN ASP CYS ALA PHE ASP TYR GLU GLY ASN LEU TRP ILE          
SEQRES  11 A  312  THR ALA PRO ALA GLY GLU VAL ALA PRO ALA ASP TYR THR          
SEQRES  12 A  312  ARG SER MET GLN GLU LYS PHE GLY SER ILE TYR CYS PHE          
SEQRES  13 A  312  THR THR ASP GLY GLN MET ILE GLN VAL ASP THR ALA PHE          
SEQRES  14 A  312  GLN PHE PRO ASN GLY ILE ALA VAL ARG HIS MET ASN ASP          
SEQRES  15 A  312  GLY ARG PRO TYR GLN LEU ILE VAL ALA GLU THR PRO THR          
SEQRES  16 A  312  LYS LYS LEU TRP SER TYR ASP ILE LYS GLY PRO ALA LYS          
SEQRES  17 A  312  ILE GLU ASN LYS LYS VAL TRP GLY HIS ILE PRO GLY THR          
SEQRES  18 A  312  HIS GLU GLY GLY ALA ASP GLY MET SER PHE ASP GLU ASP          
SEQRES  19 A  312  ASN ASN LEU LEU VAL ALA ASN TRP GLY SER SER HIS ILE          
SEQRES  20 A  312  GLU VAL PHE GLY PRO ASP GLY GLY GLN PRO LYS MET ARG          
SEQRES  21 A  312  ILE ARG CYS PRO PHE GLU LYS PRO SER ASN LEU HIS PHE          
SEQRES  22 A  312  LYS PRO GLN THR LYS THR ILE PHE VAL THR GLU HIS GLU          
SEQRES  23 A  312  ASN ASN ALA VAL TRP LYS PHE GLU TRP GLN ARG ASN GLY          
SEQRES  24 A  312  LYS LYS GLN TYR CYS GLU THR LEU LYS PHE GLY ILE PHE          
HET     CA  A 401       1                                                       
HETNAM      CA CALCIUM ION                                                      
FORMUL   2   CA    CA 2+                                                        
FORMUL   3  HOH   *507(H2 O)                                                    
HELIX    1   1 GLN A  304  THR A  308  5                                   5    
SHEET    1   A 5 VAL A   5  ILE A   6  0                                        
SHEET    2   A 5 MET A 261  ARG A 264  1  O  ARG A 264   N  ILE A   6           
SHEET    3   A 5 HIS A 248  PHE A 252 -1  N  VAL A 251   O  MET A 261           
SHEET    4   A 5 LEU A 239  TRP A 244 -1  N  LEU A 239   O  PHE A 252           
SHEET    5   A 5 GLY A 227  PHE A 233 -1  N  SER A 232   O  LEU A 240           
SHEET    1   B 4 THR A  11  THR A  14  0                                        
SHEET    2   B 4 ALA A 291  GLU A 296 -1  O  VAL A 292   N  VAL A  13           
SHEET    3   B 4 THR A 281  GLU A 286 -1  N  ILE A 282   O  PHE A 295           
SHEET    4   B 4 PRO A 270  PHE A 275 -1  N  HIS A 274   O  PHE A 283           
SHEET    1   C 4 GLU A  21  PHE A  25  0                                        
SHEET    2   C 4 PHE A  31  ALA A  35 -1  O  VAL A  34   N  GLU A  21           
SHEET    3   C 4 GLU A  47  ILE A  51 -1  O  LEU A  49   N  ILE A  33           
SHEET    4   C 4 LYS A  58  CYS A  62 -1  O  CYS A  62   N  ILE A  48           
SHEET    1   D 2 GLU A  39  VAL A  40  0                                        
SHEET    2   D 2 LYS A  43  PRO A  44 -1  O  LYS A  43   N  VAL A  40           
SHEET    1   E 2 GLU A  65  VAL A  66  0                                        
SHEET    2   E 2 TYR A  69  GLY A  70 -1  O  TYR A  69   N  VAL A  66           
SHEET    1   F 4 PRO A  73  CYS A  78  0                                        
SHEET    2   F 4 GLN A  84  ASP A  89 -1  O  ALA A  88   N  ALA A  74           
SHEET    3   F 4 GLY A  93  GLN A  98 -1  O  GLY A  93   N  ASP A  89           
SHEET    4   F 4 PHE A 103  GLU A 105 -1  O  GLU A 104   N  VAL A  96           
SHEET    1   G 4 ASP A 121  PHE A 124  0                                        
SHEET    2   G 4 LEU A 130  ALA A 134 -1  O  TRP A 131   N  ALA A 123           
SHEET    3   G 4 GLY A 153  PHE A 158 -1  O  PHE A 158   N  LEU A 130           
SHEET    4   G 4 MET A 164  PHE A 171 -1  O  PHE A 171   N  GLY A 153           
SHEET    1   H 4 PRO A 174  HIS A 181  0                                        
SHEET    2   H 4 PRO A 187  GLU A 194 -1  O  GLN A 189   N  ARG A 180           
SHEET    3   H 4 LYS A 199  GLY A 207 -1  O  TRP A 201   N  VAL A 192           
SHEET    4   H 4 LYS A 210  HIS A 219 -1  O  GLU A 212   N  ASP A 204           
LINK         OE2 GLU A  21                CA    CA A 401     1555   1555  2.31  
LINK         OD1 ASN A 120                CA    CA A 401     1555   1555  2.34  
LINK         OD1 ASN A 175                CA    CA A 401     1555   1555  2.42  
LINK         OD1 ASP A 229                CA    CA A 401     1555   1555  2.38  
LINK        CA    CA A 401                 O   HOH A 447     1555   1555  2.48  
LINK        CA    CA A 401                 O   HOH A 448     1555   1555  2.41  
LINK        CA    CA A 401                 O   HOH A 578     1555   1555  2.34  
CISPEP   1 ALA A  140    PRO A  141          0         9.08                     
SITE     1 AC1  7 GLU A  21  ASN A 120  ASN A 175  ASP A 229                    
SITE     2 AC1  7 HOH A 447  HOH A 448  HOH A 578                               
CRYST1   43.081   82.053   86.631  90.00  90.00  90.00 P 21 21 21    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      0.023212  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.012187  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011543        0.00000