HEADER    TRANSFERASE (ACYLTRANSFERASE)           03-AUG-95   1QCA              
TITLE     QUADRUPLE MUTANT Q92C, N146F, Y168F, I172V TYPE III CAT COMPLEXED WITH
TITLE    2 FUSIDIC ACID. CRYSTALS GROWN AT PH 6.3. X-RAY DATA COLLECTED AT ROOM 
TITLE    3 TEMPERATURE                                                          
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TYPE III CHLORAMPHENICOL ACETYLTRANSFERASE;                
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: CAT III;                                                    
COMPND   5 EC: 2.3.1.28;                                                        
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: SHIGELLA FLEXNERI;                              
SOURCE   3 ORGANISM_TAXID: 623;                                                 
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   6 EXPRESSION_SYSTEM_STRAIN: JM101;                                     
SOURCE   7 EXPRESSION_SYSTEM_PLASMID: PUC18;                                    
SOURCE   8 OTHER_DETAILS: TRANSMISSIBLE PLASMID R387 ISOLATED FROM SHIGELLA     
SOURCE   9 FLEXNERI                                                             
KEYWDS    CHLORAMPHENICOL, FUSIDATE, STEROID, TRANSFERASE (ACYLTRANSFERASE)     
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.G.W.LESLIE                                                          
REVDAT   4   14-FEB-24 1QCA    1       REMARK SEQADV LINK                       
REVDAT   3   13-JUL-11 1QCA    1       VERSN                                    
REVDAT   2   24-FEB-09 1QCA    1       VERSN                                    
REVDAT   1   15-OCT-95 1QCA    0                                                
JRNL        AUTH   I.A.MURRAY,P.A.CANN,P.J.DAY,J.P.DERRICK,M.J.SUTCLIFFE,       
JRNL        AUTH 2 W.V.SHAW,A.G.LESLIE                                          
JRNL        TITL   STEROID RECOGNITION BY CHLORAMPHENICOL ACETYLTRANSFERASE:    
JRNL        TITL 2 ENGINEERING AND STRUCTURAL ANALYSIS OF A HIGH AFFINITY       
JRNL        TITL 3 FUSIDIC ACID BINDING SITE.                                   
JRNL        REF    J.MOL.BIOL.                   V. 254   993 1995              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   7500366                                                      
JRNL        DOI    10.1006/JMBI.1995.0671                                       
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   W.V.SHAW,A.G.W.LESLIE                                        
REMARK   1  TITL   CHLORAMPHENICOL ACETYLTRANSFERASE                            
REMARK   1  REF    ANNU.REV.BIOPHYS.BIOPHYS.     V.  20   363 1991              
REMARK   1  REF  2 CHEM.                                                        
REMARK   1  REFN                   ISSN 0883-9182                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   A.G.W.LESLIE                                                 
REMARK   1  TITL   REFINED CRYSTAL STRUCTURE OF TYPE III CHLORAMPHENICOL        
REMARK   1  TITL 2 ACETYLTRANSFERASE AT 1.75-ANGSTROMS RESOLUTION               
REMARK   1  REF    J.MOL.BIOL.                   V. 213   167 1990              
REMARK   1  REFN                   ISSN 0022-2836                               
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   A.G.W.LESLIE,P.C.E.MOODY,W.V.SHAW                            
REMARK   1  TITL   STRUCTURE OF CHLORAMPHENICOL ACETYLTRANSFERASE AT            
REMARK   1  TITL 2 1.75-ANGSTROMS RESOLUTION                                    
REMARK   1  REF    PROC.NATL.ACAD.SCI.USA        V.  85  4133 1988              
REMARK   1  REFN                   ISSN 0027-8424                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.20 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PROLSQ                                               
REMARK   3   AUTHORS     : KONNERT,HENDRICKSON                                  
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 6.00                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 13517                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.174                           
REMARK   3   R VALUE            (WORKING SET) : NULL                            
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL WITH ALL DATA.                               
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : NULL                   
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE                  (NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL                   
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : NULL                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : NULL                   
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1686                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 39                                      
REMARK   3   SOLVENT ATOMS            : 144                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 19.90                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : 0.018 ; 0.020               
REMARK   3    ANGLE DISTANCE                  (A) : 0.049 ; 0.040               
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : 0.059 ; 0.050               
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : 0.015 ; NULL                
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : 0.166 ; 0.150               
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : 0.185 ; 0.300               
REMARK   3    MULTIPLE TORSION                (A) : 0.240 ; 0.300               
REMARK   3    H-BOND (X...Y)                  (A) : NULL  ; NULL                
REMARK   3    H-BOND (X-H...Y)                (A) : 0.215 ; 0.300               
REMARK   3                                                                      
REMARK   3   CONFORMATIONAL TORSION ANGLE RESTRAINTS.                           
REMARK   3    SPECIFIED                 (DEGREES) : NULL  ; NULL                
REMARK   3    PLANAR                    (DEGREES) : 2.600 ; 3.000               
REMARK   3    STAGGERED                 (DEGREES) : 14.800; 15.000              
REMARK   3    TRANSVERSE                (DEGREES) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND               (A**2) : 3.340 ; 3.000               
REMARK   3   MAIN-CHAIN ANGLE              (A**2) : 4.510 ; 5.000               
REMARK   3   SIDE-CHAIN BOND               (A**2) : 6.160 ; 5.000               
REMARK   3   SIDE-CHAIN ANGLE              (A**2) : 7.720 ; 7.000               
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  THE STRUCTURE WAS SOLVED BY MOLECULAR REPLACEMENT                   
REMARK   3  USING THE REFINED 1.75 ANGSTROMS RESOLUTION STRUCTURE OF            
REMARK   3  THE WILD-TYPE ENZYME AS A STARTING MODEL.                           
REMARK   3                                                                      
REMARK   3  CRYST1                                                              
REMARK   3    TEXT TO EXPLAIN UNUSUAL UNIT-CELL DATA: HEXAGONAL                 
REMARK   3    SETTING FOR R32                                                   
REMARK   3                                                                      
REMARK   3  HOH 328 LIES ON A CRYSTALLOGRAPHIC TWO-FOLD AXIS AND IS NOT         
REMARK   3  A TRUE SOLVENT MOLECULE, BUT IS IN MODELLING DENSITY                
REMARK   3  SURROUNDING THE COBALT ION CO223 (ALSO ON THE TWO-FOLD              
REMARK   3  AXIS).  PRESUMABLY THIS DENSITY IS DUE TO THE HEXAMMINE             
REMARK   3  GROUP (THE CRYSTALS WERE GROWN IN THE PRESENCE OF COBALT            
REMARK   3  HEXAMMINE).                                                         
REMARK   4                                                                      
REMARK   4 1QCA COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000175902.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 27-AUG-92                          
REMARK 200  TEMPERATURE           (KELVIN) : 298                                
REMARK 200  PH                             : 6.3                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 14238                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 15.600                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.0                               
REMARK 200  DATA REDUNDANCY                : 4.800                              
REMARK 200  R MERGE                    (I) : 0.09500                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 55.69                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.78                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.3                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3 2                            
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z                                                
REMARK 290       3555   -X+Y,-X,Z                                               
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z                                               
REMARK 290       6555   -X,-X+Y,-Z                                              
REMARK 290       7555   X+2/3,Y+1/3,Z+1/3                                       
REMARK 290       8555   -Y+2/3,X-Y+1/3,Z+1/3                                    
REMARK 290       9555   -X+Y+2/3,-X+1/3,Z+1/3                                   
REMARK 290      10555   Y+2/3,X+1/3,-Z+1/3                                      
REMARK 290      11555   X-Y+2/3,-Y+1/3,-Z+1/3                                   
REMARK 290      12555   -X+2/3,-X+Y+1/3,-Z+1/3                                  
REMARK 290      13555   X+1/3,Y+2/3,Z+2/3                                       
REMARK 290      14555   -Y+1/3,X-Y+2/3,Z+2/3                                    
REMARK 290      15555   -X+Y+1/3,-X+2/3,Z+2/3                                   
REMARK 290      16555   Y+1/3,X+2/3,-Z+2/3                                      
REMARK 290      17555   X-Y+1/3,-Y+2/3,-Z+2/3                                   
REMARK 290      18555   -X+1/3,-X+Y+2/3,-Z+2/3                                  
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   7  1.000000  0.000000  0.000000       53.90500            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       31.12207            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       41.37667            
REMARK 290   SMTRY1   8 -0.500000 -0.866025  0.000000       53.90500            
REMARK 290   SMTRY2   8  0.866025 -0.500000  0.000000       31.12207            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       41.37667            
REMARK 290   SMTRY1   9 -0.500000  0.866025  0.000000       53.90500            
REMARK 290   SMTRY2   9 -0.866025 -0.500000  0.000000       31.12207            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       41.37667            
REMARK 290   SMTRY1  10 -0.500000  0.866025  0.000000       53.90500            
REMARK 290   SMTRY2  10  0.866025  0.500000  0.000000       31.12207            
REMARK 290   SMTRY3  10  0.000000  0.000000 -1.000000       41.37667            
REMARK 290   SMTRY1  11  1.000000  0.000000  0.000000       53.90500            
REMARK 290   SMTRY2  11  0.000000 -1.000000  0.000000       31.12207            
REMARK 290   SMTRY3  11  0.000000  0.000000 -1.000000       41.37667            
REMARK 290   SMTRY1  12 -0.500000 -0.866025  0.000000       53.90500            
REMARK 290   SMTRY2  12 -0.866025  0.500000  0.000000       31.12207            
REMARK 290   SMTRY3  12  0.000000  0.000000 -1.000000       41.37667            
REMARK 290   SMTRY1  13  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  13  0.000000  1.000000  0.000000       62.24413            
REMARK 290   SMTRY3  13  0.000000  0.000000  1.000000       82.75333            
REMARK 290   SMTRY1  14 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  14  0.866025 -0.500000  0.000000       62.24413            
REMARK 290   SMTRY3  14  0.000000  0.000000  1.000000       82.75333            
REMARK 290   SMTRY1  15 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  15 -0.866025 -0.500000  0.000000       62.24413            
REMARK 290   SMTRY3  15  0.000000  0.000000  1.000000       82.75333            
REMARK 290   SMTRY1  16 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  16  0.866025  0.500000  0.000000       62.24413            
REMARK 290   SMTRY3  16  0.000000  0.000000 -1.000000       82.75333            
REMARK 290   SMTRY1  17  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  17  0.000000 -1.000000  0.000000       62.24413            
REMARK 290   SMTRY3  17  0.000000  0.000000 -1.000000       82.75333            
REMARK 290   SMTRY1  18 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  18 -0.866025  0.500000  0.000000       62.24413            
REMARK 290   SMTRY3  18  0.000000  0.000000 -1.000000       82.75333            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: SYMMETRY                                                     
REMARK 300  THE CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS PRESENTED             
REMARK 300  BELOW GENERATE THE SUBUNITS OF THE POLYMERIC MOLECULE.              
REMARK 300                                                                      
REMARK 300  APPLIED TO RESIDUES:      MET    6 ..    LYS  219                   
REMARK 300                                                                      
REMARK 300   120 DEGREE ROTATION ABOUT Z                                        
REMARK 300                                                                      
REMARK 300  SYMMETRY1   1 -0.499953 -0.866025  0.000000        0.00000          
REMARK 300  SYMMETRY2   1  0.866026 -0.500047  0.000000        0.00000          
REMARK 300  SYMMETRY3   1  0.000000  0.000000  1.000000        0.00000          
REMARK 300  APPLIED TO RESIDUES:      MET    6 ..    LYS  219                   
REMARK 300                                                                      
REMARK 300   120 DEGREE ROTATION ABOUT Z                                        
REMARK 300                                                                      
REMARK 300  SYMMETRY1   2 -0.500047  0.866025  0.000000        0.00000          
REMARK 300  SYMMETRY2   2 -0.866026 -0.499953  0.000000        0.00000          
REMARK 300  SYMMETRY3   2  0.000000  0.000000  1.000000        0.00000          
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: TRIMERIC                          
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 9800 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 24990 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -48.0 KCAL/MOL                        
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 350   BIOMT1   2 -0.500000 -0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: HEXAMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 21330 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 48620 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -142.0 KCAL/MOL                       
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 350   BIOMT1   2 -0.500000 -0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 350   BIOMT1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   5  0.000000  0.000000 -1.000000        0.00000            
REMARK 350   BIOMT1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 350   BIOMT3   6  0.000000  0.000000 -1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375 CO    CO A 222  LIES ON A SPECIAL POSITION.                          
REMARK 375 CO    CO A 223  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 302  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 303  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 328  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH A 333  LIES ON A SPECIAL POSITION.                          
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     VAL A   139                                                      
REMARK 465     THR A   140                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     MET A   6    SD   CE                                             
REMARK 470     LYS A  14    CG   CD   CE   NZ                                   
REMARK 470     ASN A  15    OD1  ND2                                            
REMARK 470     ARG A  19    CD   NE   CZ   NH1  NH2                             
REMARK 470     LYS A  46    CG   CD   CE   NZ                                   
REMARK 470     ASP A  50    OD1  OD2                                            
REMARK 470     LYS A  54    CD   CE   NZ                                        
REMARK 470     GLN A  69    CD   OE1  NE2                                       
REMARK 470     GLN A  98    CD   OE1  NE2                                       
REMARK 470     GLN A 116    OE1  NE2                                            
REMARK 470     GLU A 126    CB   CG   CD   OE1  OE2                             
REMARK 470     ARG A 127    NE   CZ   NH1  NH2                                  
REMARK 470     LYS A 129    CE   NZ                                             
REMARK 470     LYS A 133    CE   NZ                                             
REMARK 470     ASN A 164    CG   OD1  ND2                                       
REMARK 470     GLN A 180    CD   OE1  NE2                                       
REMARK 470     GLU A 181    CD   OE1  OE2                                       
REMARK 470     ASP A 183    CG   OD1  OD2                                       
REMARK 470     ARG A 184    CZ   NH1  NH2                                       
REMARK 470     LYS A 217    CD   CE   NZ                                        
REMARK 470     LYS A 219    NZ                                                  
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    MET A   6   CA  -  CB  -  CG  ANGL. DEV. =  15.1 DEGREES          
REMARK 500    GLU A  20   CG  -  CD  -  OE1 ANGL. DEV. =  12.0 DEGREES          
REMARK 500    PHE A  24   CB  -  CG  -  CD2 ANGL. DEV. =   4.5 DEGREES          
REMARK 500    PHE A  24   CB  -  CG  -  CD1 ANGL. DEV. =  -5.0 DEGREES          
REMARK 500    TYR A  25   CB  -  CG  -  CD2 ANGL. DEV. =  -3.8 DEGREES          
REMARK 500    ARG A  26   NE  -  CZ  -  NH1 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    ARG A  26   NE  -  CZ  -  NH2 ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    ARG A  28   CG  -  CD  -  NE  ANGL. DEV. =  15.8 DEGREES          
REMARK 500    ARG A  28   NE  -  CZ  -  NH1 ANGL. DEV. =   7.8 DEGREES          
REMARK 500    ARG A  28   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.9 DEGREES          
REMARK 500    CYS A  31   CA  -  CB  -  SG  ANGL. DEV. =   7.0 DEGREES          
REMARK 500    LEU A  35   CA  -  CB  -  CG  ANGL. DEV. =  18.7 DEGREES          
REMARK 500    ASP A  40   CB  -  CG  -  OD1 ANGL. DEV. =   5.5 DEGREES          
REMARK 500    TYR A  56   CB  -  CG  -  CD1 ANGL. DEV. =  -3.7 DEGREES          
REMARK 500    ASP A  80   CB  -  CG  -  OD1 ANGL. DEV. =  -7.1 DEGREES          
REMARK 500    ASP A  80   CB  -  CG  -  OD2 ANGL. DEV. =   6.5 DEGREES          
REMARK 500    ASP A  87   CB  -  CG  -  OD1 ANGL. DEV. =   6.8 DEGREES          
REMARK 500    ASP A  90   CB  -  CG  -  OD1 ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    CYS A  92   CB  -  CA  -  C   ANGL. DEV. =   7.3 DEGREES          
REMARK 500    CYS A 108   CB  -  CA  -  C   ANGL. DEV. =   9.7 DEGREES          
REMARK 500    TYR A 110   CB  -  CG  -  CD1 ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    ASP A 113   CB  -  CG  -  OD1 ANGL. DEV. =   7.6 DEGREES          
REMARK 500    ASP A 131   CB  -  CG  -  OD1 ANGL. DEV. =   8.8 DEGREES          
REMARK 500    GLU A 142   OE1 -  CD  -  OE2 ANGL. DEV. =  13.2 DEGREES          
REMARK 500    GLU A 142   CA  -  C   -  N   ANGL. DEV. =  14.1 DEGREES          
REMARK 500    ASP A 156   CB  -  CG  -  OD1 ANGL. DEV. =  -6.0 DEGREES          
REMARK 500    ASP A 156   CB  -  CG  -  OD2 ANGL. DEV. =   6.9 DEGREES          
REMARK 500    GLN A 180   O   -  C   -  N   ANGL. DEV. =  10.1 DEGREES          
REMARK 500    ARG A 184   CG  -  CD  -  NE  ANGL. DEV. =  14.1 DEGREES          
REMARK 500    PHE A 206   CB  -  CG  -  CD2 ANGL. DEV. =  -4.8 DEGREES          
REMARK 500    GLU A 212   CA  -  CB  -  CG  ANGL. DEV. =  16.6 DEGREES          
REMARK 500    GLU A 212   CG  -  CD  -  OE2 ANGL. DEV. = -14.8 DEGREES          
REMARK 500    LEU A 218   CB  -  CA  -  C   ANGL. DEV. =  11.9 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    HIS A  27      -37.37   -131.08                                   
REMARK 500    LEU A 150       74.52   -117.71                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 THERE ARE TWO COBALT IONS (BOTH OF WHICH LIE ON                      
REMARK 600 CRYSTALLOGRAPHIC TWO-FOLD AXES) WHICH PLAY A CRUCIAL ROLE            
REMARK 600 IN STABILIZING THE CRYSTAL LATTICE (LESLIE, 1990).                   
REMARK 600                                                                      
REMARK 600 CO 222 IS TETRAHEDRALLY COORDINATED BY OE2 GLU 23 AND                
REMARK 600 ND1 HIS 27 FROM TWO SYMMETRY-RELATED MOLECULES.  CO 223 IS           
REMARK 600 BELIEVED TO BE A COBALT HEXAMMINE GROUP.                             
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                              CO A 222  CO                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A  23   OE2                                                    
REMARK 620 2 GLU A  23   OE2 138.1                                              
REMARK 620 3 HIS A  27   ND1 107.7  99.9                                        
REMARK 620 4 HIS A  27   ND1  99.9 107.7  96.4                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CO A 223  CO                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A 277   O                                                      
REMARK 620 2 HOH A 277   O   178.3                                              
REMARK 620 3 HOH A 328   O    89.1  89.1                                        
REMARK 620 4 HOH A 328   O    89.0  89.2   0.2                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: ACT                                                 
REMARK 800 EVIDENCE_CODE: AUTHOR                                                
REMARK 800 SITE_DESCRIPTION: ACTIVE SITE: HIS 195 ACTS AS A GENERAL BASE IN     
REMARK 800  THE CATALYTIC MECHANISM                                             
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CO A 222                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CO A 223                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FUA A 221                 
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 THE AMINO ACID NUMBERING SCHEME ADOPTED IS BASED ON THE              
REMARK 999 ALIGNMENT OF SEVERAL CAT SEQUENCES.  FOR THE TYPE III                
REMARK 999 ENZYME WHOSE COORDINATES ARE GIVEN HERE, MET 6 IS THE                
REMARK 999 N-TERMINAL RESIDUE AND THERE IS NO RESIDUE 79.                       
DBREF  1QCA A    6   219  UNP    P00484   CAT3_ECOLI       1    213             
SEQADV 1QCA CYS A   92  UNP  P00484    GLN    86 CONFLICT                       
SEQADV 1QCA PHE A  146  UNP  P00484    ASN   140 CONFLICT                       
SEQADV 1QCA PHE A  168  UNP  P00484    TYR   162 CONFLICT                       
SEQADV 1QCA VAL A  172  UNP  P00484    ILE   166 CONFLICT                       
SEQRES   1 A  213  MET ASN TYR THR LYS PHE ASP VAL LYS ASN TRP VAL ARG          
SEQRES   2 A  213  ARG GLU HIS PHE GLU PHE TYR ARG HIS ARG LEU PRO CYS          
SEQRES   3 A  213  GLY PHE SER LEU THR SER LYS ILE ASP ILE THR THR LEU          
SEQRES   4 A  213  LYS LYS SER LEU ASP ASP SER ALA TYR LYS PHE TYR PRO          
SEQRES   5 A  213  VAL MET ILE TYR LEU ILE ALA GLN ALA VAL ASN GLN PHE          
SEQRES   6 A  213  ASP GLU LEU ARG MET ALA ILE LYS ASP ASP GLU LEU ILE          
SEQRES   7 A  213  VAL TRP ASP SER VAL ASP PRO CYS PHE THR VAL PHE HIS          
SEQRES   8 A  213  GLN GLU THR GLU THR PHE SER ALA LEU SER CYS PRO TYR          
SEQRES   9 A  213  SER SER ASP ILE ASP GLN PHE MET VAL ASN TYR LEU SER          
SEQRES  10 A  213  VAL MET GLU ARG TYR LYS SER ASP THR LYS LEU PHE PRO          
SEQRES  11 A  213  GLN GLY VAL THR PRO GLU ASN HIS LEU PHE ILE SER ALA          
SEQRES  12 A  213  LEU PRO TRP VAL ASN PHE ASP SER PHE ASN LEU ASN VAL          
SEQRES  13 A  213  ALA ASN PHE THR ASP PHE PHE ALA PRO VAL ILE THR MET          
SEQRES  14 A  213  ALA LYS TYR GLN GLN GLU GLY ASP ARG LEU LEU LEU PRO          
SEQRES  15 A  213  LEU SER VAL GLN VAL HIS HIS ALA VAL CYS ASP GLY PHE          
SEQRES  16 A  213  HIS VAL ALA ARG PHE ILE ASN ARG LEU GLN GLU LEU CYS          
SEQRES  17 A  213  ASN SER LYS LEU LYS                                          
HET     CO  A 222       1                                                       
HET     CO  A 223       1                                                       
HET    FUA  A 221      37                                                       
HETNAM      CO COBALT (II) ION                                                  
HETNAM     FUA FUSIDIC ACID                                                     
FORMUL   2   CO    2(CO 2+)                                                     
FORMUL   4  FUA    C31 H48 O6                                                   
FORMUL   5  HOH   *144(H2 O)                                                    
HELIX    1   1 VAL A   13  ASN A   15  5                                   3    
HELIX    2   2 ARG A   19  ARG A   26  1                                   8    
HELIX    3   3 THR A   42  ASP A   49  1                                   8    
HELIX    4   4 PHE A   55  GLN A   69  1                                  15    
HELIX    5   5 ASP A   71  LEU A   73  5                                   3    
HELIX    6   6 ILE A  114  TYR A  128  1                                  15    
HELIX    7   7 GLY A  200  CYS A  214  1                                  15    
SHEET    1   A 3 TYR A   8  LYS A  10  0                                        
SHEET    2   A 3 GLU A  82  TRP A  86 -1  N  VAL A  85   O  THR A   9           
SHEET    3   A 3 MET A  75  LYS A  78 -1  N  LYS A  78   O  GLU A  82           
SHEET    1   B 6 GLY A  32  ASP A  40  0                                        
SHEET    2   B 6 LEU A 186  HIS A 194 -1  N  VAL A 193   O  PHE A  33           
SHEET    3   B 6 VAL A 172  ALA A 176 -1  N  THR A 174   O  SER A 190           
SHEET    4   B 6 HIS A 144  LEU A 150  1  N  PHE A 146   O  ILE A 173           
SHEET    5   B 6 ASP A  90  HIS A  97  1  N  ASP A  90   O  LEU A 145           
SHEET    6   B 6 THR A 102  CYS A 108 -1  N  CYS A 108   O  PRO A  91           
SHEET    1   C 2 GLN A 179  GLU A 181  0                                        
SHEET    2   C 2 ARG A 184  LEU A 186 -1  N  LEU A 186   O  GLN A 179           
LINK         OE2 GLU A  23                CO    CO A 222     1555   1555  1.88  
LINK         OE2 GLU A  23                CO    CO A 222     5555   1555  1.88  
LINK         ND1 HIS A  27                CO    CO A 222     1555   1555  2.12  
LINK         ND1 HIS A  27                CO    CO A 222     5555   1555  2.12  
LINK        CO    CO A 223                 O   HOH A 277     1555   1555  2.51  
LINK        CO    CO A 223                 O   HOH A 277     1555  12555  2.51  
LINK        CO    CO A 223                 O   HOH A 328     1555   1555  1.64  
LINK        CO    CO A 223                 O   HOH A 328     1555  12555  1.64  
SITE     1 ACT  1 HIS A 195                                                     
SITE     1 AC1  2 GLU A  23  HIS A  27                                          
SITE     1 AC2  2 HOH A 277  HOH A 328                                          
SITE     1 AC3 11 TYR A  25  LEU A  29  CYS A  92  THR A  94                    
SITE     2 AC3 11 PHE A 103  SER A 107  PHE A 135  PHE A 146                    
SITE     3 AC3 11 LEU A 160  PHE A 168  HIS A 195                               
CRYST1  107.810  107.810  124.130  90.00  90.00 120.00 H 3 2        18          
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      0.009276  0.005355  0.000000        0.00000                         
SCALE2      0.000000  0.010711  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.008056        0.00000