PDB Short entry for 3E31
HEADER    LYASE                                   05-AUG-08   3E31              
TITLE     H. INFLUENZAE BETA-CARBONIC ANHYDRASE, VARIANT V47A                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CARBONIC ANHYDRASE 2;                                      
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: CARBONATE DEHYDRATASE 2;                                    
COMPND   5 EC: 4.2.1.1;                                                         
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HAEMOPHILUS INFLUENZAE;                         
SOURCE   3 ORGANISM_TAXID: 727;                                                 
SOURCE   4 GENE: CAN, HI1301;                                                   
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: JM109;                                     
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PTRC99                                    
KEYWDS    BETA CARBONIC ANHYDRASE, ALLOSTERIC SITE MUTANT, LYASE, METAL-BINDING 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    R.S.ROWLETT,J.LEE                                                     
REVDAT   5   30-AUG-23 3E31    1       REMARK                                   
REVDAT   4   20-OCT-21 3E31    1       REMARK SEQADV                            
REVDAT   3   13-JUL-11 3E31    1       VERSN                                    
REVDAT   2   26-MAY-10 3E31    1       JRNL                                     
REVDAT   1   18-AUG-09 3E31    0                                                
JRNL        AUTH   R.S.ROWLETT,K.M.HOFFMANN,H.FAILING,M.M.MYSLIWIEC,D.SAMARDZIC 
JRNL        TITL   EVIDENCE FOR A BICARBONATE "ESCORT" SITE IN HAEMOPHILUS      
JRNL        TITL 2 INFLUENZAE BETA-CARBONIC ANHYDRASE .                         
JRNL        REF    BIOCHEMISTRY                  V.  49  3640 2010              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   20359198                                                     
JRNL        DOI    10.1021/BI100328J                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.95 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC                                               
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.95                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 37.72                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 14323                          
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) : 0.199                           
REMARK   3   R VALUE            (WORKING SET) : 0.197                           
REMARK   3   FREE R VALUE                     : 0.247                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 718                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.95                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 3.03                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 975                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 100.0                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2690                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 57                           
REMARK   3   BIN FREE R VALUE                    : 0.3090                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2887                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 2                                       
REMARK   3   SOLVENT ATOMS            : 16                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   B VALUE TYPE : LIKELY RESIDUAL                                     
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 42.86                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.17000                                             
REMARK   3    B22 (A**2) : -0.17000                                             
REMARK   3    B33 (A**2) : 0.34000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.716         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.342         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.254         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 27.379        
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.950                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.931                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2959 ; 0.016 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  1953 ; 0.002 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  4009 ; 1.588 ; 1.930       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  4754 ; 0.959 ; 3.002       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   362 ; 8.179 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   137 ;40.726 ;23.869       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   506 ;19.848 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    18 ;18.289 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   453 ; 0.086 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  3272 ; 0.005 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   598 ; 0.001 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   838 ; 0.275 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  2122 ; 0.207 ; 0.200       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  1467 ; 0.200 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  1636 ; 0.095 ; 0.200       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   106 ; 0.200 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):     1 ; 0.024 ; 0.200       
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):    22 ; 0.207 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):    29 ; 0.339 ; 0.200       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):     5 ; 0.274 ; 0.200       
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):  2268 ; 1.069 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   744 ; 0.113 ; 1.500       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2900 ; 1.256 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1344 ; 1.736 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1109 ; 2.404 ; 4.500       
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  : 2                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   A    33        A   215                          
REMARK   3    ORIGIN FOR THE GROUP (A): -25.3520 -13.2860 -16.8730              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2971 T22:   0.1194                                     
REMARK   3      T33:   0.3651 T12:   0.0245                                     
REMARK   3      T13:  -0.0718 T23:  -0.0644                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   3.1950 L22:   2.7876                                     
REMARK   3      L33:   4.0689 L12:   0.9211                                     
REMARK   3      L13:   1.1636 L23:   1.0124                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.1557 S12:  -0.0133 S13:   0.0258                       
REMARK   3      S21:  -0.5142 S22:  -0.3375 S23:   0.1654                       
REMARK   3      S31:  -0.3817 S32:  -0.2991 S33:   0.1819                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   B    34        B   214                          
REMARK   3    ORIGIN FOR THE GROUP (A): -27.5000  -2.4660   7.0700              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.1903 T22:   0.1376                                     
REMARK   3      T33:   0.4278 T12:  -0.0374                                     
REMARK   3      T13:  -0.0297 T23:  -0.0764                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   3.7839 L22:   4.4288                                     
REMARK   3      L33:   3.5860 L12:   1.6683                                     
REMARK   3      L13:  -0.3961 L23:   1.4514                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0468 S12:  -0.3800 S13:   0.3096                       
REMARK   3      S21:  -0.2769 S22:  -0.0702 S23:   0.5177                       
REMARK   3      S31:  -0.4967 S32:  -0.0829 S33:   0.0234                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 3E31 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 08-AUG-08.                  
REMARK 100 THE DEPOSITION ID IS D_1000048811.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-MAR-07                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : CHESS                              
REMARK 200  BEAMLINE                       : F2                                 
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.974                              
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 210                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : SCALA                              
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 14391                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.950                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 37.770                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.9                               
REMARK 200  DATA REDUNDANCY                : 16.80                              
REMARK 200  R MERGE                    (I) : 0.08200                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 34.2000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.95                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.11                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 100.0                              
REMARK 200  DATA REDUNDANCY IN SHELL       : 5.80                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.49300                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 5.800                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER                                                
REMARK 200 STARTING MODEL: PDB ENTRY 2A8D                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 59.56                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.04                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M HEPES, 0.7 SODIUM POTASSIUM        
REMARK 280  TARTRATE, 12 MG/ML PROTEIN, PH 7.5, VAPOR DIFFUSION, HANGING        
REMARK 280  DROP, TEMPERATURE 295K                                              
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 41 21 2                        
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -Y+1/2,X+1/2,Z+1/4                                      
REMARK 290       4555   Y+1/2,-X+1/2,Z+3/4                                      
REMARK 290       5555   -X+1/2,Y+1/2,-Z+1/4                                     
REMARK 290       6555   X+1/2,-Y+1/2,-Z+3/4                                     
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-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       94.39150            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       41.13850            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       41.13850            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       47.19575            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       41.13850            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       41.13850            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000      141.58725            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       41.13850            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       41.13850            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       47.19575            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       41.13850            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       41.13850            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000      141.58725            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       94.39150            
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: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 9530 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 27910 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -49.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     ASP A     2                                                      
REMARK 465     LYS A     3                                                      
REMARK 465     ILE A     4                                                      
REMARK 465     LYS A     5                                                      
REMARK 465     GLN A     6                                                      
REMARK 465     LEU A     7                                                      
REMARK 465     PHE A     8                                                      
REMARK 465     ALA A     9                                                      
REMARK 465     ASN A    10                                                      
REMARK 465     ASN A    11                                                      
REMARK 465     TYR A    12                                                      
REMARK 465     SER A    13                                                      
REMARK 465     TRP A    14                                                      
REMARK 465     ALA A    15                                                      
REMARK 465     GLN A    16                                                      
REMARK 465     ARG A    17                                                      
REMARK 465     MET A    18                                                      
REMARK 465     LYS A    19                                                      
REMARK 465     GLU A    20                                                      
REMARK 465     GLU A    21                                                      
REMARK 465     ASN A    22                                                      
REMARK 465     SER A    23                                                      
REMARK 465     THR A    24                                                      
REMARK 465     TYR A    25                                                      
REMARK 465     PHE A    26                                                      
REMARK 465     LYS A    27                                                      
REMARK 465     GLU A    28                                                      
REMARK 465     LEU A    29                                                      
REMARK 465     ALA A    30                                                      
REMARK 465     ASP A    31                                                      
REMARK 465     HIS A    32                                                      
REMARK 465     ASP A   216                                                      
REMARK 465     GLU A   217                                                      
REMARK 465     GLU A   218                                                      
REMARK 465     ASN A   219                                                      
REMARK 465     ILE A   220                                                      
REMARK 465     LEU A   221                                                      
REMARK 465     LYS A   222                                                      
REMARK 465     LYS A   223                                                      
REMARK 465     ASP A   224                                                      
REMARK 465     HIS A   225                                                      
REMARK 465     LEU A   226                                                      
REMARK 465     GLU A   227                                                      
REMARK 465     ASN A   228                                                      
REMARK 465     THR A   229                                                      
REMARK 465     MET B     1                                                      
REMARK 465     ASP B     2                                                      
REMARK 465     LYS B     3                                                      
REMARK 465     ILE B     4                                                      
REMARK 465     LYS B     5                                                      
REMARK 465     GLN B     6                                                      
REMARK 465     LEU B     7                                                      
REMARK 465     PHE B     8                                                      
REMARK 465     ALA B     9                                                      
REMARK 465     ASN B    10                                                      
REMARK 465     ASN B    11                                                      
REMARK 465     TYR B    12                                                      
REMARK 465     SER B    13                                                      
REMARK 465     TRP B    14                                                      
REMARK 465     ALA B    15                                                      
REMARK 465     GLN B    16                                                      
REMARK 465     ARG B    17                                                      
REMARK 465     MET B    18                                                      
REMARK 465     LYS B    19                                                      
REMARK 465     GLU B    20                                                      
REMARK 465     GLU B    21                                                      
REMARK 465     ASN B    22                                                      
REMARK 465     SER B    23                                                      
REMARK 465     THR B    24                                                      
REMARK 465     TYR B    25                                                      
REMARK 465     PHE B    26                                                      
REMARK 465     LYS B    27                                                      
REMARK 465     GLU B    28                                                      
REMARK 465     LEU B    29                                                      
REMARK 465     ALA B    30                                                      
REMARK 465     ASP B    31                                                      
REMARK 465     HIS B    32                                                      
REMARK 465     GLN B    33                                                      
REMARK 465     LEU B   215                                                      
REMARK 465     ASP B   216                                                      
REMARK 465     GLU B   217                                                      
REMARK 465     GLU B   218                                                      
REMARK 465     ASN B   219                                                      
REMARK 465     ILE B   220                                                      
REMARK 465     LEU B   221                                                      
REMARK 465     LYS B   222                                                      
REMARK 465     LYS B   223                                                      
REMARK 465     ASP B   224                                                      
REMARK 465     HIS B   225                                                      
REMARK 465     LEU B   226                                                      
REMARK 465     GLU B   227                                                      
REMARK 465     ASN B   228                                                      
REMARK 465     THR B   229                                                      
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    SER B   213     O    HOH B   235              1.85            
REMARK 500   O    PRO A    48     O    GLU A    50              2.11            
REMARK 500   OE2  GLU A    50     O    HOH A   235              2.17            
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 B  42   CB    CYS B  42   SG     -0.097                       
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    THR A  34      138.77     92.91                                   
REMARK 500    ASP A  44       51.81    -60.90                                   
REMARK 500    SER A  45       28.15     34.65                                   
REMARK 500    PRO A  48       91.15    -57.02                                   
REMARK 500    ALA A  49      -80.86    -44.65                                   
REMARK 500    GLU A  50      123.49    -21.51                                   
REMARK 500    LYS A  51      -48.11     88.31                                   
REMARK 500    THR A  53      -68.94    -90.49                                   
REMARK 500    ASN A  54       77.21     62.58                                   
REMARK 500    GLU A  56       91.13     10.21                                   
REMARK 500    GLU A  59       69.54   -109.70                                   
REMARK 500    LEU A  60       99.96   -164.38                                   
REMARK 500    VAL A  85      -72.27    -74.70                                   
REMARK 500    VAL A  87      -79.97    -75.13                                   
REMARK 500    LEU A  88       -9.93    -58.46                                   
REMARK 500    LEU A 113       34.61    -95.92                                   
REMARK 500    LYS A 136       79.93   -169.06                                   
REMARK 500    SER A 138      113.85    -39.13                                   
REMARK 500    VAL A 189       77.32    -64.53                                   
REMARK 500    GLN A 191       95.77    -41.73                                   
REMARK 500    ASP B  44        3.41    -61.79                                   
REMARK 500    SER B  45      -20.37     79.45                                   
REMARK 500    GLU B  50      -53.56    -18.36                                   
REMARK 500    LEU B  52      -59.68    -17.38                                   
REMARK 500    ASN B  54       44.54     92.38                                   
REMARK 500    LEU B  55      -87.82   -123.39                                   
REMARK 500    GLU B  56      167.22    174.70                                   
REMARK 500    ASN B 100       89.52     13.15                                   
REMARK 500    HIS B 130       42.97    -98.69                                   
REMARK 500    LYS B 136       68.22    -45.52                                   
REMARK 500    LEU B 137      162.08    178.61                                   
REMARK 500    ALA B 143      -66.55     -5.50                                   
REMARK 500    LEU B 188     -178.84    -63.23                                   
REMARK 500    VAL B 189      111.65   -162.29                                   
REMARK 500    MET B 194      118.24   -178.35                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS                                         
REMARK 500                                                                      
REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH          
REMARK 500 CIS AND TRANS CONFORMATION.  CIS BONDS, IF ANY, ARE LISTED           
REMARK 500 ON CISPEP RECORDS.  TRANS IS DEFINED AS 180 +/- 30 AND               
REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES.                                  
REMARK 500                                 MODEL     OMEGA                      
REMARK 500 ALA A   49     GLU A   50                  142.38                    
REMARK 500 ASP A  190     GLN A  191                  147.52                    
REMARK 500 GLY B  192     VAL B  193                  143.86                    
REMARK 500 SER B  213     ILE B  214                  148.54                    
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 230  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS A  42   SG                                                     
REMARK 620 2 ASP A  44   OD2  96.7                                              
REMARK 620 3 HIS A  98   NE2 106.9 120.5                                        
REMARK 620 4 CYS A 101   SG  131.7  89.8 110.5                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              ZN B 230  ZN                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B  42   SG                                                     
REMARK 620 2 ASP B  44   OD2 101.3                                              
REMARK 620 3 HIS B  98   NE2  95.3 103.8                                        
REMARK 620 4 CYS B 101   SG  134.2 102.2 116.2                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 230                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN B 230                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2A8C   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2A8D   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3E24   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3E28   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3E2A   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3E2W   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3E2X   RELATED DB: PDB                                   
DBREF  3E31 A    1   229  UNP    P45148   CAN_HAEIN        1    229             
DBREF  3E31 B    1   229  UNP    P45148   CAN_HAEIN        1    229             
SEQADV 3E31 ALA A   47  UNP  P45148    VAL    47 ENGINEERED MUTATION            
SEQADV 3E31 ALA B   47  UNP  P45148    VAL    47 ENGINEERED MUTATION            
SEQRES   1 A  229  MET ASP LYS ILE LYS GLN LEU PHE ALA ASN ASN TYR SER          
SEQRES   2 A  229  TRP ALA GLN ARG MET LYS GLU GLU ASN SER THR TYR PHE          
SEQRES   3 A  229  LYS GLU LEU ALA ASP HIS GLN THR PRO HIS TYR LEU TRP          
SEQRES   4 A  229  ILE GLY CYS SER ASP SER ARG ALA PRO ALA GLU LYS LEU          
SEQRES   5 A  229  THR ASN LEU GLU PRO GLY GLU LEU PHE VAL HIS ARG ASN          
SEQRES   6 A  229  VAL ALA ASN GLN VAL ILE HIS THR ASP PHE ASN CYS LEU          
SEQRES   7 A  229  SER VAL VAL GLN TYR ALA VAL ASP VAL LEU LYS ILE GLU          
SEQRES   8 A  229  HIS ILE ILE ILE CYS GLY HIS THR ASN CYS GLY GLY ILE          
SEQRES   9 A  229  HIS ALA ALA MET ALA ASP LYS ASP LEU GLY LEU ILE ASN          
SEQRES  10 A  229  ASN TRP LEU LEU HIS ILE ARG ASP ILE TRP PHE LYS HIS          
SEQRES  11 A  229  GLY HIS LEU LEU GLY LYS LEU SER PRO GLU LYS ARG ALA          
SEQRES  12 A  229  ASP MET LEU THR LYS ILE ASN VAL ALA GLU GLN VAL TYR          
SEQRES  13 A  229  ASN LEU GLY ARG THR SER ILE VAL LYS SER ALA TRP GLU          
SEQRES  14 A  229  ARG GLY GLN LYS LEU SER LEU HIS GLY TRP VAL TYR ASP          
SEQRES  15 A  229  VAL ASN ASP GLY PHE LEU VAL ASP GLN GLY VAL MET ALA          
SEQRES  16 A  229  THR SER ARG GLU THR LEU GLU ILE SER TYR ARG ASN ALA          
SEQRES  17 A  229  ILE ALA ARG LEU SER ILE LEU ASP GLU GLU ASN ILE LEU          
SEQRES  18 A  229  LYS LYS ASP HIS LEU GLU ASN THR                              
SEQRES   1 B  229  MET ASP LYS ILE LYS GLN LEU PHE ALA ASN ASN TYR SER          
SEQRES   2 B  229  TRP ALA GLN ARG MET LYS GLU GLU ASN SER THR TYR PHE          
SEQRES   3 B  229  LYS GLU LEU ALA ASP HIS GLN THR PRO HIS TYR LEU TRP          
SEQRES   4 B  229  ILE GLY CYS SER ASP SER ARG ALA PRO ALA GLU LYS LEU          
SEQRES   5 B  229  THR ASN LEU GLU PRO GLY GLU LEU PHE VAL HIS ARG ASN          
SEQRES   6 B  229  VAL ALA ASN GLN VAL ILE HIS THR ASP PHE ASN CYS LEU          
SEQRES   7 B  229  SER VAL VAL GLN TYR ALA VAL ASP VAL LEU LYS ILE GLU          
SEQRES   8 B  229  HIS ILE ILE ILE CYS GLY HIS THR ASN CYS GLY GLY ILE          
SEQRES   9 B  229  HIS ALA ALA MET ALA ASP LYS ASP LEU GLY LEU ILE ASN          
SEQRES  10 B  229  ASN TRP LEU LEU HIS ILE ARG ASP ILE TRP PHE LYS HIS          
SEQRES  11 B  229  GLY HIS LEU LEU GLY LYS LEU SER PRO GLU LYS ARG ALA          
SEQRES  12 B  229  ASP MET LEU THR LYS ILE ASN VAL ALA GLU GLN VAL TYR          
SEQRES  13 B  229  ASN LEU GLY ARG THR SER ILE VAL LYS SER ALA TRP GLU          
SEQRES  14 B  229  ARG GLY GLN LYS LEU SER LEU HIS GLY TRP VAL TYR ASP          
SEQRES  15 B  229  VAL ASN ASP GLY PHE LEU VAL ASP GLN GLY VAL MET ALA          
SEQRES  16 B  229  THR SER ARG GLU THR LEU GLU ILE SER TYR ARG ASN ALA          
SEQRES  17 B  229  ILE ALA ARG LEU SER ILE LEU ASP GLU GLU ASN ILE LEU          
SEQRES  18 B  229  LYS LYS ASP HIS LEU GLU ASN THR                              
HET     ZN  A 230       1                                                       
HET     ZN  B 230       1                                                       
HETNAM      ZN ZINC ION                                                         
FORMUL   3   ZN    2(ZN 2+)                                                     
FORMUL   5  HOH   *16(H2 O)                                                     
HELIX    1   1 PRO A   48  THR A   53  1                                   6    
HELIX    2   2 VAL A   66  GLN A   69  5                                   4    
HELIX    3   3 ASP A   74  VAL A   87  1                                  14    
HELIX    4   4 CYS A  101  ALA A  109  1                                   9    
HELIX    5   5 GLY A  114  HIS A  130  1                                  17    
HELIX    6   6 HIS A  130  GLY A  135  1                                   6    
HELIX    7   7 SER A  138  ARG A  160  1                                  23    
HELIX    8   8 THR A  161  ARG A  170  1                                  10    
HELIX    9   9 SER A  197  SER A  213  1                                  17    
HELIX   10  10 PRO B   48  THR B   53  1                                   6    
HELIX   11  11 ASP B   74  VAL B   87  1                                  14    
HELIX   12  12 CYS B  101  ALA B  109  1                                   9    
HELIX   13  13 GLY B  114  HIS B  130  1                                  17    
HELIX   14  14 HIS B  130  LYS B  136  1                                   7    
HELIX   15  15 SER B  138  GLY B  159  1                                  22    
HELIX   16  16 THR B  161  ARG B  170  1                                  10    
HELIX   17  17 SER B  197  LEU B  212  1                                  16    
SHEET    1   A 5 PHE A  61  ASN A  65  0                                        
SHEET    2   A 5 LEU A  38  CYS A  42  1  N  TRP A  39   O  PHE A  61           
SHEET    3   A 5 HIS A  92  HIS A  98  1  O  HIS A  92   N  LEU A  38           
SHEET    4   A 5 SER A 175  ASP A 182  1  O  HIS A 177   N  ILE A  95           
SHEET    5   A 5 GLY A 186  PHE A 187 -1  O  GLY A 186   N  ASP A 182           
SHEET    1   B 5 PHE A  61  ASN A  65  0                                        
SHEET    2   B 5 LEU A  38  CYS A  42  1  N  TRP A  39   O  PHE A  61           
SHEET    3   B 5 HIS A  92  HIS A  98  1  O  HIS A  92   N  LEU A  38           
SHEET    4   B 5 SER A 175  ASP A 182  1  O  HIS A 177   N  ILE A  95           
SHEET    5   B 5 VAL A 193  ALA A 195 -1  O  ALA A 195   N  LEU A 176           
SHEET    1   C 5 LEU B  60  ARG B  64  0                                        
SHEET    2   C 5 TYR B  37  GLY B  41  1  N  TRP B  39   O  PHE B  61           
SHEET    3   C 5 HIS B  92  HIS B  98  1  O  ILE B  94   N  LEU B  38           
SHEET    4   C 5 SER B 175  TYR B 181  1  O  TRP B 179   N  GLY B  97           
SHEET    5   C 5 ASP B 190  ALA B 195 -1  O  ALA B 195   N  LEU B 176           
LINK         SG  CYS A  42                ZN    ZN A 230     1555   1555  2.33  
LINK         OD2 ASP A  44                ZN    ZN A 230     1555   1555  2.00  
LINK         NE2 HIS A  98                ZN    ZN A 230     1555   1555  2.09  
LINK         SG  CYS A 101                ZN    ZN A 230     1555   1555  2.30  
LINK         SG  CYS B  42                ZN    ZN B 230     1555   1555  2.33  
LINK         OD2 ASP B  44                ZN    ZN B 230     1555   1555  1.98  
LINK         NE2 HIS B  98                ZN    ZN B 230     1555   1555  2.10  
LINK         SG  CYS B 101                ZN    ZN B 230     1555   1555  2.27  
SITE     1 AC1  4 CYS A  42  ASP A  44  HIS A  98  CYS A 101                    
SITE     1 AC2  4 CYS B  42  ASP B  44  HIS B  98  CYS B 101                    
CRYST1   82.277   82.277  188.783  90.00  90.00  90.00 P 41 21 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      0.012154  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.012154  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.005297        0.00000