HEADER    ISOMERASE                               24-MAY-23   8SY0              
TITLE     X-RAY CRYSTAL STRUCTURE OF UDP- 2,3-DIACETAMIDO-2,3-DIDEOXY-GLUCURONIC
TITLE    2 ACID-2-EPIMERASE FROM THERMUS THERMOPHILUS STRAIN HB27 IN COMPLEX    
TITLE    3 WITH ITS PRODUCT UDP-2,3-DIACETAMIDO-2,3-DIDEOXY-D-MANNURONIC ACID AT
TITLE    4 PH 9                                                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: UDP-2,3-DIACETAMIDO-2,3-DIDEOXY-GLUCURONIC ACID-2-         
COMPND   3 EPIMERASE;                                                           
COMPND   4 CHAIN: A, B;                                                         
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: THERMUS THERMOPHILUS HB27;                      
SOURCE   3 ORGANISM_TAXID: 262724;                                              
SOURCE   4 STRAIN: ATCC BAA-163 / DSM 7039 / HB27;                              
SOURCE   5 GENE: TT_C0285;                                                      
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   8 EXPRESSION_SYSTEM_VARIANT: ROSETTA2                                  
KEYWDS    LIPOPOLYSACCHARIDE, O-ANTIGEN, 2-EPIMERASE, ISOMERASE                 
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.O.MCKNIGHT,J.B.THODEN,H.M.HOLDEN                                    
REVDAT   2   18-OCT-23 8SY0    1       JRNL                                     
REVDAT   1   13-SEP-23 8SY0    0                                                
JRNL        AUTH   J.B.THODEN,J.O.MCKNIGHT,C.W.KROFT,J.D.T.JAST,H.M.HOLDEN      
JRNL        TITL   STRUCTURAL ANALYSIS OF A BACTERIAL UDP-SUGAR 2-EPIMERASE     
JRNL        TITL 2 REVEALS THE ACTIVE SITE ARCHITECTURE BEFORE AND AFTER        
JRNL        TITL 3 CATALYSIS.                                                   
JRNL        REF    J.BIOL.CHEM.                  V. 299 05200 2023              
JRNL        REFN                   ESSN 1083-351X                               
JRNL        PMID   37660908                                                     
JRNL        DOI    10.1016/J.JBC.2023.105200                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.10 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.8.0403                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 40.67                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 42938                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.183                           
REMARK   3   R VALUE            (WORKING SET) : 0.180                           
REMARK   3   FREE R VALUE                     : 0.231                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2215                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.10                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.15                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 3056                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 96.17                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3170                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 154                          
REMARK   3   BIN FREE R VALUE                    : 0.3070                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 5676                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 93                                      
REMARK   3   SOLVENT ATOMS            : 285                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 25.94                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.04000                                             
REMARK   3    B22 (A**2) : 0.02000                                              
REMARK   3    B33 (A**2) : 0.02000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -0.01000                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.221         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.186         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.157         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 6.328         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.950                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.913                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  5910 ; 0.009 ; 0.012       
REMARK   3   BOND LENGTHS OTHERS               (A):  5705 ; 0.001 ; 0.016       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  8031 ; 1.624 ; 1.674       
REMARK   3   BOND ANGLES OTHERS          (DEGREES): 13097 ; 0.547 ; 1.584       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   727 ; 6.687 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    53 ; 9.348 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):  1009 ;16.616 ;10.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   912 ; 0.076 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  6940 ; 0.008 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  1340 ; 0.002 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  2890 ; 2.392 ; 2.478       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  2890 ; 2.389 ; 2.478       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  3611 ; 3.629 ; 4.440       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  3612 ; 3.630 ; 4.442       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  3020 ; 3.326 ; 2.908       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  3021 ; 3.325 ; 2.908       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  4417 ; 5.325 ; 5.137       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  6692 ; 6.871 ;25.290       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  6693 ; 6.870 ;25.290       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 8SY0 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-MAY-23.                  
REMARK 100 THE DEPOSITION ID IS D_1000274745.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 27-JAN-23                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 9                                  
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : SEALED TUBE                        
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : BRUKER D8 QUEST                    
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                  : PIXEL                              
REMARK 200  DETECTOR MANUFACTURER          : BRUKER PHOTON II                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : SAINT                              
REMARK 200  DATA SCALING SOFTWARE          : SADABS                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 45153                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.100                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.1                               
REMARK 200  DATA REDUNDANCY                : 7.900                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.08200                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 14.7000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.10                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.20                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 96.9                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.50                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.36000                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS            
REMARK 200 SOFTWARE USED: REFMAC                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 48.09                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.37                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PROTEIN INCUBATED WITH 5 MM UDP-2,3      
REMARK 280  -DIACETAMIDO-2,3-DIDEOXY-GLUCURONIC ACID 18-22% POLY(ETHYLENE       
REMARK 280  GLYCOL) 3350, 200 MM LICL, 100 MM CHES (PH 9), VAPOR DIFFUSION,     
REMARK 280  HANGING DROP, TEMPERATURE 293K                                      
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y+1/2,-Z                                             
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       64.30400            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 3330 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 26530 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -34.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     LYS A   360                                                      
REMARK 465     VAL A   361                                                      
REMARK 465     GLY A   362                                                      
REMARK 465     ILE A   363                                                      
REMARK 465     ARG A   364                                                      
REMARK 465     THR A   365                                                      
REMARK 465     LEU A   366                                                      
REMARK 465     GLU A   367                                                      
REMARK 465     HIS A   368                                                      
REMARK 465     HIS A   369                                                      
REMARK 465     HIS A   370                                                      
REMARK 465     HIS A   371                                                      
REMARK 465     HIS A   372                                                      
REMARK 465     HIS A   373                                                      
REMARK 465     ARG B   364                                                      
REMARK 465     THR B   365                                                      
REMARK 465     LEU B   366                                                      
REMARK 465     GLU B   367                                                      
REMARK 465     HIS B   368                                                      
REMARK 465     HIS B   369                                                      
REMARK 465     HIS B   370                                                      
REMARK 465     HIS B   371                                                      
REMARK 465     HIS B   372                                                      
REMARK 465     HIS B   373                                                      
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     ARG A 359    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     MET B   1    CG   SD   CE                                        
REMARK 470     ILE B 363    CG1  CG2  CD1                                       
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   OE1  GLU B   304     O    HOH B   501              2.02            
REMARK 500   O    HOH A   654     O    HOH A   658              2.13            
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    PRO A  29      -75.29    -54.20                                   
REMARK 500    TYR A  42      -11.90   -141.37                                   
REMARK 500    SER A  47      -74.90   -153.11                                   
REMARK 500    ASP A  98       24.51   -154.43                                   
REMARK 500    GLU A 120       67.25     75.88                                   
REMARK 500    ALA A 199      127.57    -39.28                                   
REMARK 500    ARG B  12      -64.47    -28.13                                   
REMARK 500    SER B  47      -84.90   -147.52                                   
REMARK 500    GLU B  55       38.46     74.17                                   
REMARK 500    ASP B  98       35.60   -150.38                                   
REMARK 500    GLU B 120       73.17     78.95                                   
REMARK 500    HIS B 208       -6.07   -150.00                                   
REMARK 500    TRP B 307       61.79   -101.02                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500    ARG A  26         0.12    SIDE CHAIN                              
REMARK 500    ARG A 159         0.09    SIDE CHAIN                              
REMARK 500    ARG A 246         0.12    SIDE CHAIN                              
REMARK 500    ARG A 336         0.16    SIDE CHAIN                              
REMARK 500    ARG B 159         0.09    SIDE CHAIN                              
REMARK 500    ARG B 218         0.09    SIDE CHAIN                              
REMARK 500    ARG B 278         0.09    SIDE CHAIN                              
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                              NA A 403  NA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A 257   O                                                      
REMARK 620 2 VAL A 259   O    83.9                                              
REMARK 620 3 HOH A 606   O   102.2  75.2                                        
REMARK 620 4 HOH A 632   O    83.2  78.1 151.9                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              NA B 403  NA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 VAL B 170   O                                                      
REMARK 620 2 ASP B 347   OD1 147.0                                              
REMARK 620 3 HOH B 522   O   105.8  98.6                                        
REMARK 620 N                    1     2                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 8SXW   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 8SXY   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 8SXV   RELATED DB: PDB                                   
DBREF  8SY0 A    1   365  UNP    Q72KY0   Q72KY0_THET2     1    365             
DBREF  8SY0 B    1   365  UNP    Q72KY0   Q72KY0_THET2     1    365             
SEQADV 8SY0 LEU A  366  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 GLU A  367  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS A  368  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS A  369  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS A  370  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS A  371  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS A  372  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS A  373  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 LEU B  366  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 GLU B  367  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS B  368  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS B  369  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS B  370  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS B  371  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS B  372  UNP  Q72KY0              EXPRESSION TAG                 
SEQADV 8SY0 HIS B  373  UNP  Q72KY0              EXPRESSION TAG                 
SEQRES   1 A  373  MET TRP VAL LYS ILE LEU SER VAL VAL GLY ALA ARG PRO          
SEQRES   2 A  373  GLN PHE ILE LYS ALA ALA ALA VAL SER ARG VAL LEU ARG          
SEQRES   3 A  373  ALA SER PRO GLY VAL ARG GLU VAL LEU VAL HIS THR GLY          
SEQRES   4 A  373  GLN HIS TYR ASP ASP ASN MET SER GLN VAL PHE PHE GLU          
SEQRES   5 A  373  GLU LEU GLU ILE PRO ASP PRO ASP TYR HIS LEU GLY ILE          
SEQRES   6 A  373  GLY GLY GLY THR HIS GLY GLN ASN THR GLY ARG MET LEU          
SEQRES   7 A  373  GLU ALA ILE GLU GLY VAL LEU LEU LYS GLU LYS PRO ASP          
SEQRES   8 A  373  TRP VAL LEU VAL TYR GLY ASP THR ASP SER THR LEU ALA          
SEQRES   9 A  373  GLY ALA LEU ALA ALA VAL LYS LEU HIS ILE PRO VAL ALA          
SEQRES  10 A  373  HIS VAL GLU ALA GLY LEU ARG SER PHE ASN ARG ARG MET          
SEQRES  11 A  373  PRO GLU GLU ILE ASN ARG ILE LEU THR ASP HIS ALA SER          
SEQRES  12 A  373  ASP LEU LEU PHE ALA PRO THR GLU THR ALA VAL GLN ASN          
SEQRES  13 A  373  LEU LEU ARG GLU GLY ILE PRO GLU ASN ARG ILE HIS LEU          
SEQRES  14 A  373  VAL GLY ASP VAL MET TYR ASP ALA ALA LEU HIS TYR GLY          
SEQRES  15 A  373  ALA LYS ALA GLU ARG LYS SER ARG ILE LEU GLU ARG LEU          
SEQRES  16 A  373  GLY LEU GLN ALA LYS GLY TYR VAL LEU ALA THR ILE HIS          
SEQRES  17 A  373  ARG ALA GLU ASN THR ASP ASP GLN GLU ARG LEU ARG VAL          
SEQRES  18 A  373  ILE LEU GLU ALA LEU ALA GLU VAL HIS GLN GLU VAL PRO          
SEQRES  19 A  373  VAL VAL PHE PRO VAL HIS PRO ARG THR ARG LYS ARG ALA          
SEQRES  20 A  373  GLU ALA PHE GLY LEU GLY SER TYR LEU GLU LYS VAL VAL          
SEQRES  21 A  373  ALA LEU GLU PRO VAL GLY TYR LEU ASP MET VAL MET LEU          
SEQRES  22 A  373  GLU LYS ASN ALA ARG LEU ILE VAL THR ASP SER GLY GLY          
SEQRES  23 A  373  VAL GLN LYS GLU ALA TYR PHE TYR ARG VAL PRO CYS VAL          
SEQRES  24 A  373  THR VAL ARG GLU GLU THR GLU TRP VAL GLU LEU LEU LYS          
SEQRES  25 A  373  ALA GLU TRP ASN TYR LEU ALA ALA PRO GLN ASN ALA LYS          
SEQRES  26 A  373  ASP LEU ALA LEU THR ILE LEU HIS ARG MET ARG THR LYS          
SEQRES  27 A  373  GLY VAL GLU ILE ASP LEU TYR GLY ASP GLY ARG ALA SER          
SEQRES  28 A  373  GLN LYS ILE SER ASP PHE LEU ARG LYS VAL GLY ILE ARG          
SEQRES  29 A  373  THR LEU GLU HIS HIS HIS HIS HIS HIS                          
SEQRES   1 B  373  MET TRP VAL LYS ILE LEU SER VAL VAL GLY ALA ARG PRO          
SEQRES   2 B  373  GLN PHE ILE LYS ALA ALA ALA VAL SER ARG VAL LEU ARG          
SEQRES   3 B  373  ALA SER PRO GLY VAL ARG GLU VAL LEU VAL HIS THR GLY          
SEQRES   4 B  373  GLN HIS TYR ASP ASP ASN MET SER GLN VAL PHE PHE GLU          
SEQRES   5 B  373  GLU LEU GLU ILE PRO ASP PRO ASP TYR HIS LEU GLY ILE          
SEQRES   6 B  373  GLY GLY GLY THR HIS GLY GLN ASN THR GLY ARG MET LEU          
SEQRES   7 B  373  GLU ALA ILE GLU GLY VAL LEU LEU LYS GLU LYS PRO ASP          
SEQRES   8 B  373  TRP VAL LEU VAL TYR GLY ASP THR ASP SER THR LEU ALA          
SEQRES   9 B  373  GLY ALA LEU ALA ALA VAL LYS LEU HIS ILE PRO VAL ALA          
SEQRES  10 B  373  HIS VAL GLU ALA GLY LEU ARG SER PHE ASN ARG ARG MET          
SEQRES  11 B  373  PRO GLU GLU ILE ASN ARG ILE LEU THR ASP HIS ALA SER          
SEQRES  12 B  373  ASP LEU LEU PHE ALA PRO THR GLU THR ALA VAL GLN ASN          
SEQRES  13 B  373  LEU LEU ARG GLU GLY ILE PRO GLU ASN ARG ILE HIS LEU          
SEQRES  14 B  373  VAL GLY ASP VAL MET TYR ASP ALA ALA LEU HIS TYR GLY          
SEQRES  15 B  373  ALA LYS ALA GLU ARG LYS SER ARG ILE LEU GLU ARG LEU          
SEQRES  16 B  373  GLY LEU GLN ALA LYS GLY TYR VAL LEU ALA THR ILE HIS          
SEQRES  17 B  373  ARG ALA GLU ASN THR ASP ASP GLN GLU ARG LEU ARG VAL          
SEQRES  18 B  373  ILE LEU GLU ALA LEU ALA GLU VAL HIS GLN GLU VAL PRO          
SEQRES  19 B  373  VAL VAL PHE PRO VAL HIS PRO ARG THR ARG LYS ARG ALA          
SEQRES  20 B  373  GLU ALA PHE GLY LEU GLY SER TYR LEU GLU LYS VAL VAL          
SEQRES  21 B  373  ALA LEU GLU PRO VAL GLY TYR LEU ASP MET VAL MET LEU          
SEQRES  22 B  373  GLU LYS ASN ALA ARG LEU ILE VAL THR ASP SER GLY GLY          
SEQRES  23 B  373  VAL GLN LYS GLU ALA TYR PHE TYR ARG VAL PRO CYS VAL          
SEQRES  24 B  373  THR VAL ARG GLU GLU THR GLU TRP VAL GLU LEU LEU LYS          
SEQRES  25 B  373  ALA GLU TRP ASN TYR LEU ALA ALA PRO GLN ASN ALA LYS          
SEQRES  26 B  373  ASP LEU ALA LEU THR ILE LEU HIS ARG MET ARG THR LYS          
SEQRES  27 B  373  GLY VAL GLU ILE ASP LEU TYR GLY ASP GLY ARG ALA SER          
SEQRES  28 B  373  GLN LYS ILE SER ASP PHE LEU ARG LYS VAL GLY ILE ARG          
SEQRES  29 B  373  THR LEU GLU HIS HIS HIS HIS HIS HIS                          
HET    MJ3  A 401      43                                                       
HET    EDO  A 402       4                                                       
HET     NA  A 403       1                                                       
HET    MJ3  B 401      43                                                       
HET     CL  B 402       1                                                       
HET     NA  B 403       1                                                       
HETNAM     MJ3 (2~{S},3~{S},4~{R},5~{S},6~{R})-4,5-DIACETAMIDO-6-               
HETNAM   2 MJ3  [[[(2~{R},3~{S},4~{R},5~{R})-5-[2,4-                            
HETNAM   3 MJ3  BIS(OXIDANYLIDENE)PYRIMIDIN-1-YL]-3,4-BIS(OXIDANYL)             
HETNAM   4 MJ3  OXOLAN-2-YL]METHOXY-OXIDANYL-PHOSPHORYL]OXY-OXIDANYL-           
HETNAM   5 MJ3  PHOSPHORYL]OXY-3-OXIDANYL-OXANE-2-CARBOXYLIC ACID               
HETNAM     EDO 1,2-ETHANEDIOL                                                   
HETNAM      NA SODIUM ION                                                       
HETNAM      CL CHLORIDE ION                                                     
HETSYN     MJ3 UDP-2,3-DIACETAMIDO-2,3-DIDEOXY-ALPHA-D-MANNURONIC ACID          
HETSYN     EDO ETHYLENE GLYCOL                                                  
FORMUL   3  MJ3    2(C19 H28 N4 O18 P2)                                         
FORMUL   4  EDO    C2 H6 O2                                                     
FORMUL   5   NA    2(NA 1+)                                                     
FORMUL   7   CL    CL 1-                                                        
FORMUL   9  HOH   *285(H2 O)                                                    
HELIX    1 AA1 ALA A   11  ALA A   27  1                                  17    
HELIX    2 AA2 SER A   47  LEU A   54  1                                   8    
HELIX    3 AA3 THR A   69  LYS A   89  1                                  21    
HELIX    4 AA4 THR A   99  LEU A  112  1                                  14    
HELIX    5 AA5 MET A  130  SER A  143  1                                  14    
HELIX    6 AA6 THR A  150  ARG A  159  1                                  10    
HELIX    7 AA7 PRO A  163  ASN A  165  5                                   3    
HELIX    8 AA8 ASP A  172  SER A  189  1                                  18    
HELIX    9 AA9 ARG A  190  LEU A  195  1                                   6    
HELIX   10 AB1 ARG A  209  ASP A  214  1                                   6    
HELIX   11 AB2 ASP A  215  VAL A  233  1                                  19    
HELIX   12 AB3 HIS A  240  PHE A  250  1                                  11    
HELIX   13 AB4 LEU A  252  VAL A  259  1                                   8    
HELIX   14 AB5 GLY A  266  ASN A  276  1                                  11    
HELIX   15 AB6 SER A  284  TYR A  294  1                                  11    
HELIX   16 AB7 TRP A  307  ALA A  313  1                                   7    
HELIX   17 AB8 ASN A  323  MET A  335  1                                  13    
HELIX   18 AB9 ARG A  349  LEU A  358  1                                  10    
HELIX   19 AC1 ALA B   11  ARG B   26  1                                  16    
HELIX   20 AC2 SER B   47  GLU B   55  1                                   9    
HELIX   21 AC3 THR B   69  LYS B   89  1                                  21    
HELIX   22 AC4 THR B   99  LEU B  112  1                                  14    
HELIX   23 AC5 MET B  130  ALA B  142  1                                  13    
HELIX   24 AC6 THR B  150  GLU B  160  1                                  11    
HELIX   25 AC7 PRO B  163  ASN B  165  5                                   3    
HELIX   26 AC8 ASP B  172  SER B  189  1                                  18    
HELIX   27 AC9 ARG B  190  GLY B  196  1                                   7    
HELIX   28 AD1 ARG B  209  ASP B  214  1                                   6    
HELIX   29 AD2 ASP B  215  VAL B  233  1                                  19    
HELIX   30 AD3 HIS B  240  PHE B  250  1                                  11    
HELIX   31 AD4 LEU B  252  LYS B  258  1                                   7    
HELIX   32 AD5 GLY B  266  ASN B  276  1                                  11    
HELIX   33 AD6 SER B  284  TYR B  294  1                                  11    
HELIX   34 AD7 TRP B  307  ALA B  313  1                                   7    
HELIX   35 AD8 ASN B  323  ARG B  336  1                                  14    
HELIX   36 AD9 ARG B  349  LYS B  360  1                                  12    
SHEET    1 AA1 7 TYR A  61  HIS A  62  0                                        
SHEET    2 AA1 7 VAL A  31  HIS A  37  1  N  HIS A  37   O  TYR A  61           
SHEET    3 AA1 7 VAL A   3  VAL A   9  1  N  SER A   7   O  VAL A  34           
SHEET    4 AA1 7 TRP A  92  TYR A  96  1  O  LEU A  94   N  LEU A   6           
SHEET    5 AA1 7 VAL A 116  VAL A 119  1  O  VAL A 119   N  VAL A  95           
SHEET    6 AA1 7 LEU A 145  ALA A 148  1  O  PHE A 147   N  HIS A 118           
SHEET    7 AA1 7 ILE A 167  LEU A 169  1  O  HIS A 168   N  LEU A 146           
SHEET    1 AA2 6 VAL A 260  LEU A 262  0                                        
SHEET    2 AA2 6 VAL A 235  PRO A 238  1  N  PHE A 237   O  LEU A 262           
SHEET    3 AA2 6 VAL A 203  THR A 206  1  N  VAL A 203   O  VAL A 236           
SHEET    4 AA2 6 LEU A 279  THR A 282  1  O  VAL A 281   N  LEU A 204           
SHEET    5 AA2 6 CYS A 298  THR A 300  1  O  VAL A 299   N  THR A 282           
SHEET    6 AA2 6 ASN A 316  LEU A 318  1  O  TYR A 317   N  THR A 300           
SHEET    1 AA3 7 TYR B  61  HIS B  62  0                                        
SHEET    2 AA3 7 VAL B  31  HIS B  37  1  N  HIS B  37   O  TYR B  61           
SHEET    3 AA3 7 VAL B   3  VAL B   9  1  N  SER B   7   O  VAL B  36           
SHEET    4 AA3 7 TRP B  92  TYR B  96  1  O  TRP B  92   N  LEU B   6           
SHEET    5 AA3 7 VAL B 116  VAL B 119  1  O  VAL B 119   N  VAL B  95           
SHEET    6 AA3 7 LEU B 145  ALA B 148  1  O  LEU B 145   N  HIS B 118           
SHEET    7 AA3 7 ILE B 167  LEU B 169  1  O  HIS B 168   N  LEU B 146           
SHEET    1 AA4 6 VAL B 260  LEU B 262  0                                        
SHEET    2 AA4 6 VAL B 235  PRO B 238  1  N  VAL B 235   O  VAL B 260           
SHEET    3 AA4 6 VAL B 203  THR B 206  1  N  VAL B 203   O  VAL B 236           
SHEET    4 AA4 6 LEU B 279  THR B 282  1  O  VAL B 281   N  LEU B 204           
SHEET    5 AA4 6 CYS B 298  THR B 300  1  O  VAL B 299   N  THR B 282           
SHEET    6 AA4 6 ASN B 316  LEU B 318  1  O  TYR B 317   N  THR B 300           
LINK         O   GLU A 257                NA    NA A 403     1555   1555  2.30  
LINK         O   VAL A 259                NA    NA A 403     1555   1555  2.42  
LINK        NA    NA A 403                 O   HOH A 606     1555   1555  2.40  
LINK        NA    NA A 403                 O   HOH A 632     1555   1555  2.68  
LINK         O   VAL B 170                NA    NA B 403     1555   1555  2.68  
LINK         OD1 ASP B 347                NA    NA B 403     1555   1555  2.97  
LINK        NA    NA B 403                 O   HOH B 522     1555   1555  2.78  
CRYST1   56.340  128.608   58.934  90.00 111.24  90.00 P 1 21 1      4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.017749  0.000000  0.006897        0.00000                         
SCALE2      0.000000  0.007776  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.018204        0.00000