HEADER    RACEMASE                                28-MAR-96   1DTN              
TITLE     MANDELATE RACEMASE MUTANT D270N CO-CRYSTALLIZED WITH (S)-ATROLACTATE  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: MANDELATE RACEMASE;                                        
COMPND   3 CHAIN: A;                                                            
COMPND   4 EC: 5.1.2.2;                                                         
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PSEUDOMONAS AERUGINOSA;                         
SOURCE   3 ORGANISM_TAXID: 287;                                                 
SOURCE   4 ATCC: 15692;                                                         
SOURCE   5 GENE: MANDELATE RACEMASE;                                            
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PKT230;                                   
SOURCE   9 EXPRESSION_SYSTEM_GENE: MANDELATE RACEMASE;                          
SOURCE  10 OTHER_DETAILS: TRC PROMOTER                                          
KEYWDS    RACEMASE, ISOMERASE, MANDELATE PATHWAY                                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.G.CLIFTON,G.A.PETSKO                                                
REVDAT   5   07-FEB-24 1DTN    1       REMARK                                   
REVDAT   4   03-NOV-21 1DTN    1       REMARK SEQADV LINK                       
REVDAT   3   13-JUL-11 1DTN    1       VERSN                                    
REVDAT   2   24-FEB-09 1DTN    1       VERSN                                    
REVDAT   1   14-OCT-96 1DTN    0                                                
JRNL        AUTH   B.MITRA,A.T.KALLARAKAL,J.W.KOZARICH,J.A.GERLT,J.G.CLIFTON,   
JRNL        AUTH 2 G.A.PETSKO,G.L.KENYON                                        
JRNL        TITL   MECHANISM OF THE REACTION CATALYZED BY MANDELATE RACEMASE:   
JRNL        TITL 2 IMPORTANCE OF ELECTROPHILIC CATALYSIS BY GLUTAMIC ACID 317.  
JRNL        REF    BIOCHEMISTRY                  V.  34  2777 1995              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   7893689                                                      
JRNL        DOI    10.1021/BI00009A006                                          
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   D.J.NEIDHART,P.L.HOWELL,G.A.PETSKO,V.M.POWERS,R.S.LI,        
REMARK   1  AUTH 2 G.L.KENYON,J.A.GERLT                                         
REMARK   1  TITL   MECHANISM OF THE REACTION CATALYZED BY MANDELATE RACEMASE.   
REMARK   1  TITL 2 2. CRYSTAL STRUCTURE OF MANDELATE RACEMASE AT 2.5-A          
REMARK   1  TITL 3 RESOLUTION: IDENTIFICATION OF THE ACTIVE SITE AND POSSIBLE   
REMARK   1  TITL 4 CATALYTIC RESIDUES                                           
REMARK   1  REF    BIOCHEMISTRY                  V.  30  9264 1991              
REMARK   1  REFN                   ISSN 0006-2960                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   D.J.NEIDHART,G.L.KENYON,J.A.GERLT,G.A.PETSKO                 
REMARK   1  TITL   MANDELATE RACEMASE AND MUCONATE LACTONIZING ENZYME ARE       
REMARK   1  TITL 2 MECHANISTICALLY DISTINCT AND STRUCTURALLY HOMOLOGOUS         
REMARK   1  REF    NATURE                        V. 347   692 1990              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : TNT                                                  
REMARK   3   AUTHORS     : TRONRUD,TEN EYCK,MATTHEWS                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 1.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 85.3                           
REMARK   3   NUMBER OF REFLECTIONS             : 20034                          
REMARK   3                                                                      
REMARK   3  USING DATA ABOVE SIGMA CUTOFF.                                      
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE     (WORKING + TEST SET) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.171                           
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  USING ALL DATA, NO SIGMA CUTOFF.                                    
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) : 24924                  
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2698                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 13                                      
REMARK   3   SOLVENT ATOMS            : 110                                     
REMARK   3                                                                      
REMARK   3  WILSON B VALUE (FROM FCALC, A**2) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.    RMS    WEIGHT  COUNT           
REMARK   3   BOND LENGTHS                 (A) : 0.010 ; 0.020 ; NULL            
REMARK   3   BOND ANGLES            (DEGREES) : 2.200 ; 3.000 ; 3902            
REMARK   3   TORSION ANGLES         (DEGREES) : 24.000; NULL  ; 1701            
REMARK   3   PSEUDOROTATION ANGLES  (DEGREES) : NULL  ; NULL  ; NULL            
REMARK   3   TRIGONAL CARBON PLANES       (A) : 0.009 ; 0.020 ; 59              
REMARK   3   GENERAL PLANES               (A) : 0.017 ; 0.020 ; 422             
REMARK   3   ISOTROPIC THERMAL FACTORS (A**2) : 1.700 ; NULL  ; 2403            
REMARK   3   NON-BONDED CONTACTS          (A) : 0.048 ; 0.100 ; 8               
REMARK   3                                                                      
REMARK   3  INCORRECT CHIRAL-CENTERS (COUNT) : NULL                             
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
REMARK   3                                                                      
REMARK   3  RESTRAINT LIBRARIES.                                                
REMARK   3   STEREOCHEMISTRY : NULL                                             
REMARK   3   ISOTROPIC THERMAL FACTOR RESTRAINTS : NULL                         
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: RANGE_OF_ATOMS_OR_RESIDUES:               
REMARK   3              LEU 18 - ALA 32                                         
REMARK   3  THE ELECTRON DENSITY FOR THE RESIDUES IN THE "FLAP" REGION          
REMARK   3  (LEU 18 - ALA 32) INDICATED THAT THESE RESIDUES WERE                
REMARK   3  PRESENT IN TWO DIFFERENT CONFORMATIONS.  THE OCCUPANCIES OF         
REMARK   3  THE TWO CONFORMATIONS WERE REFINED WITH X-PLOR, WHICH DID           
REMARK   3  NOT KEEP THE SUMS OF THE TWO OCCUPANCIES EQUAL TO 1.0.              
REMARK   3  AFTER THAT REFINEMENT, THE STRUCTURE WAS REFINED USING TNT,         
REMARK   3  KEEPING THE OCCUPANCIES (FROM X-PLOR) CONSTANT.  INSTEAD,           
REMARK   3  THE B-FACTORS WERE REFINED.                                         
REMARK   4                                                                      
REMARK   4 1DTN 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_1000172934.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 03-JUN-92                          
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : AREA DETECTOR                      
REMARK 200  DETECTOR MANUFACTURER          : SIEMENS                            
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XSCALE                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 24924                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 1.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 85.3                               
REMARK 200  DATA REDUNDANCY                : 2.700                              
REMARK 200  R MERGE                    (I) : 0.13000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 55.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.73                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 4 2 2                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -Y,X,Z                                                  
REMARK 290       4555   Y,-X,Z                                                  
REMARK 290       5555   -X,Y,-Z                                                 
REMARK 290       6555   X,-Y,-Z                                                 
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-Z                                                
REMARK 290       9555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290      10555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290      11555   -Y+1/2,X+1/2,Z+1/2                                      
REMARK 290      12555   Y+1/2,-X+1/2,Z+1/2                                      
REMARK 290      13555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290      14555   X+1/2,-Y+1/2,-Z+1/2                                     
REMARK 290      15555   Y+1/2,X+1/2,-Z+1/2                                      
REMARK 290      16555   -Y+1/2,-X+1/2,-Z+1/2                                    
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000        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  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000        0.00000            
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        0.00000            
REMARK 290   SMTRY1   9  1.000000  0.000000  0.000000       62.75000            
REMARK 290   SMTRY2   9  0.000000  1.000000  0.000000       62.75000            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       53.65000            
REMARK 290   SMTRY1  10 -1.000000  0.000000  0.000000       62.75000            
REMARK 290   SMTRY2  10  0.000000 -1.000000  0.000000       62.75000            
REMARK 290   SMTRY3  10  0.000000  0.000000  1.000000       53.65000            
REMARK 290   SMTRY1  11  0.000000 -1.000000  0.000000       62.75000            
REMARK 290   SMTRY2  11  1.000000  0.000000  0.000000       62.75000            
REMARK 290   SMTRY3  11  0.000000  0.000000  1.000000       53.65000            
REMARK 290   SMTRY1  12  0.000000  1.000000  0.000000       62.75000            
REMARK 290   SMTRY2  12 -1.000000  0.000000  0.000000       62.75000            
REMARK 290   SMTRY3  12  0.000000  0.000000  1.000000       53.65000            
REMARK 290   SMTRY1  13 -1.000000  0.000000  0.000000       62.75000            
REMARK 290   SMTRY2  13  0.000000  1.000000  0.000000       62.75000            
REMARK 290   SMTRY3  13  0.000000  0.000000 -1.000000       53.65000            
REMARK 290   SMTRY1  14  1.000000  0.000000  0.000000       62.75000            
REMARK 290   SMTRY2  14  0.000000 -1.000000  0.000000       62.75000            
REMARK 290   SMTRY3  14  0.000000  0.000000 -1.000000       53.65000            
REMARK 290   SMTRY1  15  0.000000  1.000000  0.000000       62.75000            
REMARK 290   SMTRY2  15  1.000000  0.000000  0.000000       62.75000            
REMARK 290   SMTRY3  15  0.000000  0.000000 -1.000000       53.65000            
REMARK 290   SMTRY1  16  0.000000 -1.000000  0.000000       62.75000            
REMARK 290   SMTRY2  16 -1.000000  0.000000  0.000000       62.75000            
REMARK 290   SMTRY3  16  0.000000  0.000000 -1.000000       53.65000            
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: OCTAMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: OCTAMERIC                  
REMARK 350 SOFTWARE USED: PISA,PQS                                              
REMARK 350 TOTAL BURIED SURFACE AREA: 28520 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 86280 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -185.0 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 -1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   3  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   4  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   4 -1.000000  0.000000  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  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   6  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   6  0.000000  0.000000 -1.000000        0.00000            
REMARK 350   BIOMT1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 350   BIOMT1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   8  0.000000  0.000000 -1.000000        0.00000            
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 THIS IS THE STRUCTURE OF THE MANDELATE RACEMASE                      
REMARK 400 MUTANT GLUTAMATE 317 -> GLUTAMINE CO-CRYSTALLIZED WITH               
REMARK 400 THE COMPETITIVE INHIBITOR (S)- ATROLACTIC ACID.  THE                 
REMARK 400 INHIBITOR (ALSO CALLED (S)-ALPHA-METHYLMANDELIC ACID) IS             
REMARK 400 RESIDUE 399.  THE INHIBITOR CONSTANT (K SUB I) FOR                   
REMARK 400 (S)-ATROLACTATE IS APPROXIMATELY 0.2 MILLIMOLAR;                     
REMARK 400 CRYSTALS WERE OBTAINED FROM A SOLUTION THAT CONTAINED 5              
REMARK 400 MILLIMOLAR INHIBITOR.                                                
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     SER A     2                                                      
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    GLU A 150   CD    GLU A 150   OE2     0.070                       
REMARK 500    GLU A 247   CD    GLU A 247   OE2     0.072                       
REMARK 500    GLU A 333   CD    GLU A 333   OE1     0.069                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ARG A  10   NE  -  CZ  -  NH1 ANGL. DEV. =   3.2 DEGREES          
REMARK 500    ASP A 108   CB  -  CG  -  OD2 ANGL. DEV. =   5.8 DEGREES          
REMARK 500    ASP A 113   CB  -  CG  -  OD2 ANGL. DEV. =   5.7 DEGREES          
REMARK 500    ARG A 151   NE  -  CZ  -  NH2 ANGL. DEV. =   3.3 DEGREES          
REMARK 500    ARG A 161   NE  -  CZ  -  NH1 ANGL. DEV. =   5.3 DEGREES          
REMARK 500    ARG A 161   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.5 DEGREES          
REMARK 500    ASP A 173   CB  -  CG  -  OD1 ANGL. DEV. =  -5.8 DEGREES          
REMARK 500    ASP A 173   CB  -  CG  -  OD2 ANGL. DEV. =   5.7 DEGREES          
REMARK 500    ASP A 189   CB  -  CG  -  OD2 ANGL. DEV. =  -5.8 DEGREES          
REMARK 500    ASP A 201   CB  -  CG  -  OD1 ANGL. DEV. =   6.4 DEGREES          
REMARK 500    ASP A 201   CB  -  CG  -  OD2 ANGL. DEV. =  -6.8 DEGREES          
REMARK 500    ASP A 270   CB  -  CG  -  OD2 ANGL. DEV. =   5.4 DEGREES          
REMARK 500    ASP A 341   CB  -  CG  -  OD1 ANGL. DEV. =   5.4 DEGREES          
REMARK 500    ASP A 341   CB  -  CG  -  OD2 ANGL. DEV. =  -6.1 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    ALA A  19      -46.98    132.36                                   
REMARK 500    TYR A  54      -55.42     75.02                                   
REMARK 500    HIS A 140     -164.75   -111.49                                   
REMARK 500    SER A 141     -159.57   -132.38                                   
REMARK 500    PHE A 190      139.48    -19.57                                   
REMARK 500    GLU A 222       65.13     34.02                                   
REMARK 500    MET A 268       76.22   -151.84                                   
REMARK 500    LEU A 298     -165.86     58.02                                   
REMARK 500    HIS A 314      -88.81   -119.59                                   
REMARK 500    ARG A 350       69.41   -109.97                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 360  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP A 195   OD2                                                    
REMARK 620 2 GLU A 221   OE2  99.7                                              
REMARK 620 3 GLU A 247   OE1 172.0  81.2                                        
REMARK 620 4 GLU A 247   OE2 132.3 128.0  47.6                                  
REMARK 620 5 APG A 399   O17  86.1 155.2  96.4  50.6                            
REMARK 620 6 APG A 399   O14  92.7  87.6  95.2  88.5  68.0                      
REMARK 620 7 HOH A 401   O    80.6 126.4  92.5  72.7  78.2 146.0                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: MTL                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: SITE MTL CONSTITUTES THE DIRECT METAL ION          
REMARK 800  LIGANDS.                                                            
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: ACT                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: SITE ACT CONSTITUTES THE ACID/BASE CATALYSTS       
REMARK 800  RESPONSIBLE FOR PROTON ABSTRACTION AND REDELIVERY IN THE            
REMARK 800  RACEMIZATION REACTION.                                              
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: CAR                                                 
REMARK 800 EVIDENCE_CODE: UNKNOWN                                               
REMARK 800 SITE_DESCRIPTION: SITE CAR CONSTITUTES THE BINDING SITE FOR THE      
REMARK 800  CARBOXYL GROUP OF SUBSTRATE. THESE RESIDUES FUNCTION, ALONG WITH    
REMARK 800  THE METAL ION, AS ELECTROPHILIC CATALYSTS.                          
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 360                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE APG A 399                 
DBREF  1DTN A    1   359  UNP    P11444   MANR_PSEPU       1    359             
SEQADV 1DTN GLN A  317  UNP  P11444    GLU   317 ENGINEERED MUTATION            
SEQRES   1 A  359  MET SER GLU VAL LEU ILE THR GLY LEU ARG THR ARG ALA          
SEQRES   2 A  359  VAL ASN VAL PRO LEU ALA TYR PRO VAL HIS THR ALA VAL          
SEQRES   3 A  359  GLY THR VAL GLY THR ALA PRO LEU VAL LEU ILE ASP LEU          
SEQRES   4 A  359  ALA THR SER ALA GLY VAL VAL GLY HIS SER TYR LEU PHE          
SEQRES   5 A  359  ALA TYR THR PRO VAL ALA LEU LYS SER LEU LYS GLN LEU          
SEQRES   6 A  359  LEU ASP ASP MET ALA ALA MET ILE VAL ASN GLU PRO LEU          
SEQRES   7 A  359  ALA PRO VAL SER LEU GLU ALA MET LEU ALA LYS ARG PHE          
SEQRES   8 A  359  CYS LEU ALA GLY TYR THR GLY LEU ILE ARG MET ALA ALA          
SEQRES   9 A  359  ALA GLY ILE ASP MET ALA ALA TRP ASP ALA LEU GLY LYS          
SEQRES  10 A  359  VAL HIS GLU THR PRO LEU VAL LYS LEU LEU GLY ALA ASN          
SEQRES  11 A  359  ALA ARG PRO VAL GLN ALA TYR ASP SER HIS SER LEU ASP          
SEQRES  12 A  359  GLY VAL LYS LEU ALA THR GLU ARG ALA VAL THR ALA ALA          
SEQRES  13 A  359  GLU LEU GLY PHE ARG ALA VAL LYS THR LYS ILE GLY TYR          
SEQRES  14 A  359  PRO ALA LEU ASP GLN ASP LEU ALA VAL VAL ARG SER ILE          
SEQRES  15 A  359  ARG GLN ALA VAL GLY ASP ASP PHE GLY ILE MET VAL ASP          
SEQRES  16 A  359  TYR ASN GLN SER LEU ASP VAL PRO ALA ALA ILE LYS ARG          
SEQRES  17 A  359  SER GLN ALA LEU GLN GLN GLU GLY VAL THR TRP ILE GLU          
SEQRES  18 A  359  GLU PRO THR LEU GLN HIS ASP TYR GLU GLY HIS GLN ARG          
SEQRES  19 A  359  ILE GLN SER LYS LEU ASN VAL PRO VAL GLN MET GLY GLU          
SEQRES  20 A  359  ASN TRP LEU GLY PRO GLU GLU MET PHE LYS ALA LEU SER          
SEQRES  21 A  359  ILE GLY ALA CYS ARG LEU ALA MET PRO ASP ALA MET LYS          
SEQRES  22 A  359  ILE GLY GLY VAL THR GLY TRP ILE ARG ALA SER ALA LEU          
SEQRES  23 A  359  ALA GLN GLN PHE GLY ILE PRO MET SER SER HIS LEU PHE          
SEQRES  24 A  359  GLN GLU ILE SER ALA HIS LEU LEU ALA ALA THR PRO THR          
SEQRES  25 A  359  ALA HIS TRP LEU GLN ARG LEU ASP LEU ALA GLY SER VAL          
SEQRES  26 A  359  ILE GLU PRO THR LEU THR PHE GLU GLY GLY ASN ALA VAL          
SEQRES  27 A  359  ILE PRO ASP LEU PRO GLY VAL GLY ILE ILE TRP ARG GLU          
SEQRES  28 A  359  LYS GLU ILE GLY LYS TYR LEU VAL                              
HET     MG  A 360       1                                                       
HET    APG  A 399      12                                                       
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     APG ATROLACTIC ACID (2-PHENYL-LACTIC ACID)                           
FORMUL   2   MG    MG 2+                                                        
FORMUL   3  APG    C9 H10 O3                                                    
FORMUL   4  HOH   *110(H2 O)                                                    
HELIX    1  NA THR A   55  ILE A   73  1KINKS AT ALA 58, ALA 70           19    
HELIX    2  NB PRO A   80  ALA A   94  1KINK AT ARG 90                    15    
HELIX    3  NC GLY A   98  VAL A  118  1                                  21    
HELIX    4  ND LEU A  123  LEU A  127  1                                   5    
HELIX    5  BA GLY A  144  GLU A  157  1                                  14    
HELIX    6  BB LEU A  172  VAL A  186  1                                  15    
HELIX    7  BC VAL A  202  GLU A  215  1                                  14    
HELIX    8  BD TYR A  229  SER A  237  1                                   9    
HELIX    9  BE PRO A  252  ILE A  261  1                                  10    
HELIX   10  BH ALA A  271  ILE A  274  1                                   4    
HELIX   11  BF VAL A  277  PHE A  290  1                                  14    
HELIX   12  BG GLN A  300  ALA A  308  1                                   9    
HELIX   13  CA ALA A  322  VAL A  325  1                                   4    
HELIX   14  CB GLU A  351  LYS A  356  1                                   6    
SHEET    1   N 3 LEU A   5  VAL A  16  0                                        
SHEET    2   N 3 ALA A  32  THR A  41 -1  O  ALA A  40   N  GLY A   8           
SHEET    3   N 3 VAL A  45  PHE A  52 -1  O  VAL A  45   N  THR A  41           
SHEET    1   B 9 VAL A 134  HIS A 140  0                                        
SHEET    2   B 9 ALA A 162  LYS A 166  1  O  ALA A 162   N  ASP A 138           
SHEET    3   B 9 GLY A 191  ASP A 195  1  O  GLY A 191   N  VAL A 163           
SHEET    4   B 9 TRP A 219  GLU A 221  1  O  TRP A 219   N  VAL A 194           
SHEET    5   B 9 PRO A 242  MET A 245  1  O  PRO A 242   N  ILE A 220           
SHEET    6   B 9 ARG A 265  MET A 268  1  N  MET A 268   O  MET A 245           
SHEET    7   B 9 PRO A 293  HIS A 297  1  N  SER A 295   O  ALA A 267           
SHEET    8   B 9 HIS A 314  ARG A 318  1  O  TRP A 315   N  SER A 296           
SHEET    9   B 9 VAL A 134  HIS A 140  1  O  GLN A 135   N  LEU A 316           
SHEET    1   C 3 THR A 331  GLU A 333  0                                        
SHEET    2   C 3 ASN A 336  VAL A 338 -1  N  VAL A 338   O  THR A 331           
SHEET    3   C 3 VAL A 134  ALA A 136 -1  O  VAL A 134   N  ALA A 337           
SHEET    1   F 2 VAL A  22  THR A  24  0                                        
SHEET    2   F 2 GLY A  27  VAL A  29 -1  O  VAL A  29   N  VAL A  22           
LINK         OD2 ASP A 195                MG    MG A 360     1555   1555  2.36  
LINK         OE2 GLU A 221                MG    MG A 360     1555   1555  2.07  
LINK         OE1 GLU A 247                MG    MG A 360     1555   1555  2.01  
LINK         OE2 GLU A 247                MG    MG A 360     1555   1555  3.05  
LINK        MG    MG A 360                 O17 APG A 399     1555   1555  2.48  
LINK        MG    MG A 360                 O14 APG A 399     1555   1555  2.54  
LINK        MG    MG A 360                 O   HOH A 401     1555   1555  2.18  
SITE     1 MTL  3 ASP A 195  GLU A 221  GLU A 247                               
SITE     1 ACT  2 LYS A 166  HIS A 297                                          
SITE     1 CAR  2 LYS A 164  GLN A 317                                          
SITE     1 AC1  5 ASP A 195  GLU A 221  GLU A 247  APG A 399                    
SITE     2 AC1  5 HOH A 401                                                     
SITE     1 AC2 12 PHE A  52  TYR A  54  LYS A 164  LYS A 166                    
SITE     2 AC2 12 ASP A 195  ASN A 197  GLU A 221  GLU A 247                    
SITE     3 AC2 12 HIS A 297  GLN A 317   MG A 360  HOH A 401                    
CRYST1  125.500  125.500  107.300  90.00  90.00  90.00 I 4 2 2      16          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.007968  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.007968  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009320        0.00000