HEADER    TRANSFERASE                             18-JUN-07   2QBU               
TITLE     CRYSTAL STRUCTURE OF METHANOTHERMOBACTER THERMAUTOTROPHICUS CBIL       
COMPND    MOL_ID: 1;                                                             
COMPND   2 MOLECULE: PRECORRIN-2 METHYLTRANSFERASE;                              
COMPND   3 CHAIN: A, B;                                                          
COMPND   4 ENGINEERED: YES                                                       
SOURCE    MOL_ID: 1;                                                             
SOURCE   2 ORGANISM_SCIENTIFIC: METHANOTHERMOBACTER THERMAUTOTROPHICUS;          
SOURCE   3 ORGANISM_TAXID: 187420;                                               
SOURCE   4 STRAIN: DELTA H;                                                      
SOURCE   5 GENE: CBIL;                                                           
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                  
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                         
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3) PLYSS;                           
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                               
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET14B                                     
KEYWDS    METHYLTRANSFERASE, TRANSFERASE                                         
EXPDTA    X-RAY DIFFRACTION                                                      
AUTHOR    S.FRANK,M.J.WARREN,R.W.PICKERSGILL                                     
REVDAT   5   03-APR-24 2QBU    1       REMARK                                    
REVDAT   4   21-FEB-24 2QBU    1       REMARK                                    
REVDAT   3   13-JUL-11 2QBU    1       VERSN                                     
REVDAT   2   24-FEB-09 2QBU    1       VERSN                                     
REVDAT   1   15-APR-08 2QBU    0                                                 
JRNL        AUTH   S.FRANK,E.DEERY,A.A.BRINDLEY,H.K.LEECH,A.LAWRENCE,            
JRNL        AUTH 2 P.HEATHCOTE,H.L.SCHUBERT,K.BROCKLEHURST,S.E.RIGBY,            
JRNL        AUTH 3 M.J.WARREN,R.W.PICKERSGILL                                    
JRNL        TITL   ELUCIDATION OF SUBSTRATE SPECIFICITY IN THE COBALAMIN         
JRNL        TITL 2 (VITAMIN B12) BIOSYNTHETIC METHYLTRANSFERASES. STRUCTURE AND  
JRNL        TITL 3 FUNCTION OF THE C20 METHYLTRANSFERASE (CBIL) FROM             
JRNL        TITL 4 METHANOTHERMOBACTER THERMAUTOTROPHICUS.                       
JRNL        REF    J.BIOL.CHEM.                  V. 282 23957 2007               
JRNL        REFN                   ISSN 0021-9258                                
JRNL        PMID   17567575                                                      
JRNL        DOI    10.1074/JBC.M703827200                                        
REMARK   2                                                                       
REMARK   2 RESOLUTION.    2.10 ANGSTROMS.                                        
REMARK   3                                                                       
REMARK   3 REFINEMENT.                                                           
REMARK   3   PROGRAM     : REFMAC 5.2.0005                                       
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) : 50.38                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                            
REMARK   3   COMPLETENESS FOR RANGE        (%) : 100.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 29735                           
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) : 0.205                            
REMARK   3   R VALUE            (WORKING SET) : 0.202                            
REMARK   3   FREE R VALUE                     : 0.270                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 1586                             
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) : 2.16                          
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 2186                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 100.0                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2560                        
REMARK   3   BIN FREE R VALUE SET COUNT          : 98                            
REMARK   3   BIN FREE R VALUE                    : 0.3340                        
REMARK   3                                                                       
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                     
REMARK   3   PROTEIN ATOMS            : 3488                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                        
REMARK   3   HETEROGEN ATOMS          : 52                                       
REMARK   3   SOLVENT ATOMS            : 438                                      
REMARK   3                                                                       
REMARK   3  B VALUES.                                                            
REMARK   3   FROM WILSON PLOT           (A**2) : 35.00                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 35.25                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                        
REMARK   3    B11 (A**2) : -0.28000                                              
REMARK   3    B22 (A**2) : -0.28000                                              
REMARK   3    B33 (A**2) : 0.41000                                               
REMARK   3    B12 (A**2) : -0.14000                                              
REMARK   3    B13 (A**2) : 0.00000                                               
REMARK   3    B23 (A**2) : 0.00000                                               
REMARK   3                                                                       
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                  
REMARK   3   ESU BASED ON R VALUE                            (A): 0.231          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.211          
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.155          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 5.765          
REMARK   3                                                                       
REMARK   3 CORRELATION COEFFICIENTS.                                             
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.946                          
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.903                          
REMARK   3                                                                       
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT       
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  3594 ; 0.011 ; 0.022        
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL        
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  4868 ; 1.418 ; 1.993        
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL        
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   454 ; 6.351 ; 5.000        
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   160 ;34.433 ;22.625        
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   610 ;17.929 ;15.000        
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    44 ;17.814 ;15.000        
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   568 ; 0.111 ; 0.200        
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  2706 ; 0.004 ; 0.020        
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL        
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  1870 ; 0.223 ; 0.200        
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL        
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  2421 ; 0.300 ; 0.200        
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL        
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   385 ; 0.179 ; 0.200        
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):    80 ; 0.229 ; 0.200        
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL        
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    17 ; 0.228 ; 0.200        
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL        
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL        
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL        
REMARK   3                                                                       
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT       
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  2348 ; 0.816 ; 1.500        
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL        
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  3674 ; 1.392 ; 2.000        
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL        
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1400 ; 1.940 ; 3.000        
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL        
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1194 ; 3.220 ; 4.500        
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL        
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL        
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL        
REMARK   3                                                                       
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT        
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL        
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL        
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL        
REMARK   3                                                                       
REMARK   3  NCS RESTRAINTS STATISTICS                                            
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : 1                                  
REMARK   3                                                                       
REMARK   3  NCS GROUP NUMBER               : 1                                   
REMARK   3     CHAIN NAMES                    : A B                              
REMARK   3     NUMBER OF COMPONENTS NCS GROUP : 1                                
REMARK   3       COMPONENT C  SSSEQI  TO  C   SSSEQI   CODE                      
REMARK   3           1     A      1       A     228      5                       
REMARK   3           1     B      1       B     228      5                       
REMARK   3                   GROUP CHAIN        COUNT   RMS     WEIGHT           
REMARK   3   MEDIUM POSITIONAL  1    A    (A):    912 ;  0.50 ;  0.50            
REMARK   3   LOOSE POSITIONAL   1    A    (A):    833 ;  0.98 ;  5.00            
REMARK   3   MEDIUM THERMAL     1    A (A**2):    912 ;  1.15 ;  2.00            
REMARK   3   LOOSE THERMAL      1    A (A**2):    833 ;  2.01 ; 10.00            
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 2QBU COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                          
REMARK 100                                                                       
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-JUN-07.                   
REMARK 100 THE DEPOSITION ID IS D_1000043402.                                    
REMARK 200                                                                       
REMARK 200 EXPERIMENTAL DETAILS                                                  
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                   
REMARK 200  DATE OF DATA COLLECTION        : 15-DEC-04                           
REMARK 200  TEMPERATURE           (KELVIN) : 100                                 
REMARK 200  PH                             : 6.5                                 
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                   
REMARK 200                                                                       
REMARK 200  SYNCHROTRON              (Y/N) : Y                                   
REMARK 200  RADIATION SOURCE               : ESRF                                
REMARK 200  BEAMLINE                       : ID14-3                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                                
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                   
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.931                               
REMARK 200  MONOCHROMATOR                  : NULL                                
REMARK 200  OPTICS                         : NULL                                
REMARK 200                                                                       
REMARK 200  DETECTOR TYPE                  : CCD                                 
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                      
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                              
REMARK 200  DATA SCALING SOFTWARE          : SCALA                               
REMARK 200                                                                       
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 31826                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.100                               
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.380                              
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                                
REMARK 200                                                                       
REMARK 200 OVERALL.                                                              
REMARK 200  COMPLETENESS FOR RANGE     (%) : 100.0                               
REMARK 200  DATA REDUNDANCY                : 7.500                               
REMARK 200  R MERGE                    (I) : 0.07400                             
REMARK 200  R SYM                      (I) : NULL                                
REMARK 200   FOR THE DATA SET  : 7.5000                              
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) : 2.21                      
REMARK 200  COMPLETENESS FOR SHELL     (%) : 100.0                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 7.20                                
REMARK 200  R MERGE FOR SHELL          (I) : 0.36300                             
REMARK 200  R SYM FOR SHELL            (I) : NULL                                
REMARK 200   FOR SHELL         : 4.800                               
REMARK 200                                                                       
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                               
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR                           
REMARK 200 SOFTWARE USED: MLPHARE                                                
REMARK 200 STARTING MODEL: B. MEGATERIUM CBIF                                    
REMARK 200                                                                       
REMARK 200 REMARK: NULL                                                          
REMARK 280                                                                       
REMARK 280 CRYSTAL                                                               
REMARK 280 SOLVENT CONTENT, VS   (%): 54.19                                      
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.68                      
REMARK 280                                                                       
REMARK 280 CRYSTALLIZATION CONDITIONS: 100 MM MES BUFFER, PH 6.5, CONTAINING     
REMARK 280  2.5 M AMMONIUM SULPHATE, VAPOR DIFFUSION, HANGING DROP,              
REMARK 280  TEMPERATURE 298K                                                     
REMARK 290                                                                       
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                             
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 62                              
REMARK 290                                                                       
REMARK 290      SYMOP   SYMMETRY                                                 
REMARK 290     NNNMMM   OPERATOR                                                 
REMARK 290       1555   X,Y,Z                                                    
REMARK 290       2555   -Y,X-Y,Z+2/3                                             
REMARK 290       3555   -X+Y,-X,Z+1/3                                            
REMARK 290       4555   -X,-Y,Z                                                  
REMARK 290       5555   Y,-X+Y,Z+2/3                                             
REMARK 290       6555   X-Y,X,Z+1/3                                              
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       33.57933             
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       16.78967             
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000        0.00000             
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000             
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000        0.00000             
REMARK 290   SMTRY1   5  0.500000  0.866025  0.000000        0.00000             
REMARK 290   SMTRY2   5 -0.866025  0.500000  0.000000        0.00000             
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       33.57933             
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       16.78967             
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,PQS                                               
REMARK 350 TOTAL BURIED SURFACE AREA: 5130 ANGSTROM**2                           
REMARK 350 SURFACE AREA OF THE COMPLEX: 19960 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -25.0 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     ARG A   229                                                       
REMARK 465     GLU A   230                                                       
REMARK 465     GLN A   231                                                       
REMARK 465     SER A   232                                                       
REMARK 465     ARG B   229                                                       
REMARK 465     GLU B   230                                                       
REMARK 465     GLN B   231                                                       
REMARK 465     SER B   232                                                       
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   CB   CYS B   172     O    HOH B   742              2.03             
REMARK 500   OE2  GLU B    92     O    HOH B   743              2.08             
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    ASP A  72      -69.59    -91.74                                    
REMARK 500    ASP A  74       40.86    -61.15                                    
REMARK 500    ASP A 159     -167.91   -113.85                                    
REMARK 500    LYS A 176       52.45     33.56                                    
REMARK 500    CYS A 203      132.94    -39.78                                    
REMARK 500    SER A 204       -0.21     69.97                                    
REMARK 500    THR B 110       -6.50     75.19                                    
REMARK 500    SER B 204       -1.79     80.15                                    
REMARK 500                                                                       
REMARK 500 REMARK: NULL                                                          
REMARK 800                                                                       
REMARK 800 SITE                                                                  
REMARK 800 SITE_IDENTIFIER: AC1                                                  
REMARK 800 EVIDENCE_CODE: SOFTWARE                                               
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SAH B 501                  
REMARK 800                                                                       
REMARK 800 SITE_IDENTIFIER: AC2                                                  
REMARK 800 EVIDENCE_CODE: SOFTWARE                                               
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SAH B 502                  
DBREF  2QBU A    1   232  UNP    O27402   O27402_METTH     1    232              
DBREF  2QBU B    1   232  UNP    O27402   O27402_METTH     1    232              
SEQRES   1 A  232  MET HIS GLY LYS LEU ILE GLY VAL GLY VAL GLY PRO GLY           
SEQRES   2 A  232  ASP SER GLU LEU LEU THR LEU ARG ALA VAL ASN VAL LEU           
SEQRES   3 A  232  ARG SER VAL PRO VAL ILE CYS ALA PRO ARG SER SER SER           
SEQRES   4 A  232  GLU ARG GLU SER ILE ALA LEU SER ILE VAL GLU ASP ILE           
SEQRES   5 A  232  LEU THR GLU ARG ARG ASP GLY CYS ARG ILE LEU ASP PRO           
SEQRES   6 A  232  VAL PHE PRO MET THR ASP ASP ARG ASP GLU LEU GLU SER           
SEQRES   7 A  232  HIS TRP ASP SER ALA ALA ARG MET VAL ALA ALA GLU LEU           
SEQRES   8 A  232  GLU ASP GLY ARG ASP VAL ALA PHE ILE THR LEU GLY ASP           
SEQRES   9 A  232  PRO SER ILE TYR SER THR PHE SER TYR LEU GLN GLN ARG           
SEQRES  10 A  232  ILE GLU ASP MET GLY PHE LYS THR GLU MET VAL PRO GLY           
SEQRES  11 A  232  VAL THR SER PHE THR ALA CYS ALA ALA THR ALA GLY ARG           
SEQRES  12 A  232  THR LEU VAL GLU GLY ASP GLU ILE LEU LEU VAL VAL PRO           
SEQRES  13 A  232  ARG VAL ASP ASP ARG PHE GLU ARG VAL LEU ARG ASP VAL           
SEQRES  14 A  232  ASP ALA CYS VAL ILE MET LYS THR SER ARG HIS GLY ARG           
SEQRES  15 A  232  ARG ALA MET GLU VAL VAL GLU SER ASP PRO ARG GLY LYS           
SEQRES  16 A  232  ASP VAL VAL SER VAL ALA ASN CYS SER MET ASP ASP GLU           
SEQRES  17 A  232  VAL VAL GLU ARG GLY PHE ALA SER GLY GLY GLY TYR LEU           
SEQRES  18 A  232  ALA THR THR LEU VAL ARG PHE ARG GLU GLN SER                   
SEQRES   1 B  232  MET HIS GLY LYS LEU ILE GLY VAL GLY VAL GLY PRO GLY           
SEQRES   2 B  232  ASP SER GLU LEU LEU THR LEU ARG ALA VAL ASN VAL LEU           
SEQRES   3 B  232  ARG SER VAL PRO VAL ILE CYS ALA PRO ARG SER SER SER           
SEQRES   4 B  232  GLU ARG GLU SER ILE ALA LEU SER ILE VAL GLU ASP ILE           
SEQRES   5 B  232  LEU THR GLU ARG ARG ASP GLY CYS ARG ILE LEU ASP PRO           
SEQRES   6 B  232  VAL PHE PRO MET THR ASP ASP ARG ASP GLU LEU GLU SER           
SEQRES   7 B  232  HIS TRP ASP SER ALA ALA ARG MET VAL ALA ALA GLU LEU           
SEQRES   8 B  232  GLU ASP GLY ARG ASP VAL ALA PHE ILE THR LEU GLY ASP           
SEQRES   9 B  232  PRO SER ILE TYR SER THR PHE SER TYR LEU GLN GLN ARG           
SEQRES  10 B  232  ILE GLU ASP MET GLY PHE LYS THR GLU MET VAL PRO GLY           
SEQRES  11 B  232  VAL THR SER PHE THR ALA CYS ALA ALA THR ALA GLY ARG           
SEQRES  12 B  232  THR LEU VAL GLU GLY ASP GLU ILE LEU LEU VAL VAL PRO           
SEQRES  13 B  232  ARG VAL ASP ASP ARG PHE GLU ARG VAL LEU ARG ASP VAL           
SEQRES  14 B  232  ASP ALA CYS VAL ILE MET LYS THR SER ARG HIS GLY ARG           
SEQRES  15 B  232  ARG ALA MET GLU VAL VAL GLU SER ASP PRO ARG GLY LYS           
SEQRES  16 B  232  ASP VAL VAL SER VAL ALA ASN CYS SER MET ASP ASP GLU           
SEQRES  17 B  232  VAL VAL GLU ARG GLY PHE ALA SER GLY GLY GLY TYR LEU           
SEQRES  18 B  232  ALA THR THR LEU VAL ARG PHE ARG GLU GLN SER                   
HET    SAH  B 501      26                                                        
HET    SAH  B 502      26                                                        
HETNAM     SAH S-ADENOSYL-L-HOMOCYSTEINE                                         
FORMUL   3  SAH    2(C14 H20 N6 O5 S)                                            
FORMUL   5  HOH   *438(H2 O)                                                     
HELIX    1   1 ASP A   14  LEU A   18  5                                   5     
HELIX    2   2 THR A   19  VAL A   29  1                                  11     
HELIX    3   3 SER A   43  ARG A   56  1                                  14     
HELIX    4   4 GLU A   75  ASP A   93  1                                  19     
HELIX    5   5 THR A  110  MET A  121  1                                  12     
HELIX    6   6 THR A  132  ALA A  141  1                                  10     
HELIX    7   7 ASP A  159  LEU A  166  1                                   8     
HELIX    8   8 ARG A  167  VAL A  169  5                                   3     
HELIX    9   9 LYS A  176  ASP A  191  1                                  16     
HELIX   10  10 ASP B   14  LEU B   18  5                                   5     
HELIX   11  11 THR B   19  VAL B   29  1                                  11     
HELIX   12  12 SER B   43  VAL B   49  1                                   7     
HELIX   13  13 VAL B   49  ARG B   56  1                                   8     
HELIX   14  14 ASP B   72  ASP B   93  1                                  22     
HELIX   15  15 THR B  110  MET B  121  1                                  12     
HELIX   16  16 THR B  132  ALA B  141  1                                  10     
HELIX   17  17 ASP B  159  LEU B  166  1                                   8     
HELIX   18  18 ARG B  167  VAL B  169  5                                   3     
HELIX   19  19 LYS B  176  SER B  190  1                                  15     
SHEET    1   A 5 ARG A  61  LEU A  63  0                                         
SHEET    2   A 5 VAL A  31  CYS A  33  1  N  ILE A  32   O  LEU A  63            
SHEET    3   A 5 VAL A  97  THR A 101  1  O  ALA A  98   N  CYS A  33            
SHEET    4   A 5 LEU A   5  GLY A   9  1  N  VAL A   8   O  PHE A  99            
SHEET    5   A 5 THR A 125  VAL A 128  1  O  VAL A 128   N  GLY A   7            
SHEET    1   B10 VAL A 209  ARG A 212  0                                         
SHEET    2   B10 ASP A 196  ALA A 201 -1  N  ALA A 201   O  VAL A 209            
SHEET    3   B10 ALA A 222  ARG A 227 -1  O  LEU A 225   N  VAL A 198            
SHEET    4   B10 ALA A 171  ILE A 174 -1  N  ILE A 174   O  THR A 224            
SHEET    5   B10 LEU A 152  VAL A 155  1  N  VAL A 155   O  VAL A 173            
SHEET    6   B10 LEU B 152  VAL B 155 -1  O  VAL B 154   N  LEU A 152            
SHEET    7   B10 ALA B 171  ILE B 174  1  O  VAL B 173   N  LEU B 153            
SHEET    8   B10 ALA B 222  ARG B 227 -1  O  VAL B 226   N  CYS B 172            
SHEET    9   B10 ASP B 196  ALA B 201 -1  N  VAL B 198   O  LEU B 225            
SHEET   10   B10 VAL B 209  ARG B 212 -1  O  GLU B 211   N  SER B 199            
SHEET    1   C 5 ARG B  61  LEU B  63  0                                         
SHEET    2   C 5 VAL B  31  CYS B  33  1  N  ILE B  32   O  LEU B  63            
SHEET    3   C 5 VAL B  97  THR B 101  1  O  ALA B  98   N  CYS B  33            
SHEET    4   C 5 LEU B   5  GLY B   9  1  N  ILE B   6   O  VAL B  97            
SHEET    5   C 5 THR B 125  VAL B 128  1  O  VAL B 128   N  GLY B   7            
SITE     1 AC1 18 PRO A  12  LEU A 102  GLY A 103  ASP A 104                     
SITE     2 AC1 18 ILE A 107  TYR A 108  THR A 132  SER A 133                     
SITE     3 AC1 18 CYS A 137  MET A 175  LYS A 176  ASN A 202                     
SITE     4 AC1 18 CYS A 203  TYR A 220  LEU A 221  ALA A 222                     
SITE     5 AC1 18 THR A 223  HOH B 511                                           
SITE     1 AC2 19 PRO B  12  LEU B 102  GLY B 103  ASP B 104                     
SITE     2 AC2 19 ILE B 107  TYR B 108  THR B 132  SER B 133                     
SITE     3 AC2 19 CYS B 137  MET B 175  LYS B 176  ASN B 202                     
SITE     4 AC2 19 CYS B 203  MET B 205  TYR B 220  LEU B 221                     
SITE     5 AC2 19 ALA B 222  THR B 223  HOH B 510                                
CRYST1  135.911  135.911   50.369  90.00  90.00 120.00 P 62         12           
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      0.007358  0.004248  0.000000        0.00000                          
SCALE2      0.000000  0.008496  0.000000        0.00000                          
SCALE3      0.000000  0.000000  0.019853        0.00000                          
END