HEADER    MOLYBDENUM COFACTOR BIOSYNTHESIS        26-FEB-03   1H4D              
TITLE     BIOCHEMICAL AND STRUCTURAL ANALYSIS OF THE MOLYBDENUM COFACTOR        
TITLE    2 BIOSYNTHESIS PROTEIN MOBA                                            
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: MOLYBDOPTERIN-GUANINE DINUCLEOTIDE BIOSYNTHESIS PROTEIN A; 
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: PROTEIN FA;                                                 
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: YES;                                                       
COMPND   7 OTHER_DETAILS: THE FULL LENGTH CONSTRUCT WAS C-TERMINALLY EXTENDED   
COMPND   8 WITH A 7-RESIDUE NICKEL AFFINITY TAG OF SEQUENCE SER-HIS-HIS-HIS-HIS-
COMPND   9 HIS-HIS.                                                             
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;                               
SOURCE   3 ORGANISM_TAXID: 562;                                                 
SOURCE   4 STRAIN: JM109;                                                       
SOURCE   5 VARIANT: M15[PREP4];                                                 
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: JM109;                                     
SOURCE   9 EXPRESSION_SYSTEM_VARIANT: M15[PREP4];                               
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PKK223-3;                                 
SOURCE  11 OTHER_DETAILS: MUTATION INTRODUCED BY 3-WAY PCR AND VERIFIED BY DNA  
SOURCE  12 SEQUENCING                                                           
KEYWDS    MOLYBDOPTERIN NUCLEOTIDYL-TRANSFERASE, MOLYBDENUM COFACTOR            
KEYWDS   2 BIOSYNTHESIS, GTP-BINDING                                            
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.GUSE,C.E.M.STEVENSON,J.KUPER,G.BUCHANAN,G.SCHWARZ,R.R.MENDEL,       
AUTHOR   2 D.M.LAWSON,T.PALMER                                                  
REVDAT   6   13-DEC-23 1H4D    1       REMARK LINK                              
REVDAT   5   08-MAY-19 1H4D    1       REMARK                                   
REVDAT   4   03-APR-19 1H4D    1       REMARK                                   
REVDAT   3   24-FEB-09 1H4D    1       VERSN                                    
REVDAT   2   10-JUL-03 1H4D    1       JRNL                                     
REVDAT   1   08-MAY-03 1H4D    0                                                
JRNL        AUTH   A.GUSE,C.E.M.STEVENSON,J.KUPER,G.BUCHANAN,G.SCHWARZ,         
JRNL        AUTH 2 G.GIORDANO,A.MAGALON,R.R.MENDEL,D.M.LAWSON,T.PALMER          
JRNL        TITL   BIOCHEMICAL AND STRUCTURAL ANALYSIS OF THE MOLYBDENUM        
JRNL        TITL 2 COFACTOR BIOSYNTHESIS PROTEIN MOBA                           
JRNL        REF    J.BIOL.CHEM.                  V. 278 25302 2003              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   12719427                                                     
JRNL        DOI    10.1074/JBC.M302639200                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.74 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.1.24                                        
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) : 1.74                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 54.23                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 98.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 17221                          
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) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.175                           
REMARK   3   FREE R VALUE                     : 0.219                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 894                             
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) : 1.74                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.79                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1138                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2220                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 54                           
REMARK   3   BIN FREE R VALUE                    : 0.2890                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1436                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 27                                      
REMARK   3   SOLVENT ATOMS            : 185                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 15.72                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.08000                                             
REMARK   3    B22 (A**2) : 0.34000                                              
REMARK   3    B33 (A**2) : -0.26000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.123         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.121         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.073         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.226         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.952                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.930                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1497 ; 0.021 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2047 ; 1.913 ; 1.970       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   187 ; 7.741 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   236 ; 0.135 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1158 ; 0.009 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   700 ; 0.227 ; 0.200       
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):   133 ; 0.158 ; 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):    39 ; 0.200 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    21 ; 0.347 ; 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):   936 ; 1.213 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1500 ; 2.116 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   561 ; 3.042 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   547 ; 4.638 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL PLUS MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1H4D COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 26-FEB-03.                  
REMARK 100 THE DEPOSITION ID IS D_1290012250.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 20-MAR-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 5.50                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SRS                                
REMARK 200  BEAMLINE                       : PX9.5                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.00                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 18116                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.750                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 40.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.6                               
REMARK 200  DATA REDUNDANCY                : 4.900                              
REMARK 200  R MERGE                    (I) : 0.06800                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 21.1000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.75                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.78                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 96.7                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.23400                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.800                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: PDB ENTRY 1E5K                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 36.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.93                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: HANGING DROP VAPOUR DIFFUSION. PROTEIN   
REMARK 280  AT CONCENTRATION 12 MG/ML WAS MIXED WITH AN EQUAL VOLUME OF WELL    
REMARK 280  SOLUTION CONSISTING OF 20% (V/V) ISOPROPANO 2% (W/V) PEG 1500,      
REMARK 280  IN 100 MM CITRIC ACID BROUGHT TO PH 5.5 WITH NAOH. CRYSTALS GROW    
REMARK 280  AT 4 DEG. C AND TAKE UP TO 8 WEEK TO REACH FULL SIZE., PH 5.50,     
REMARK 280  VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 277K                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 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   -X+1/2,Y+1/2,-Z                                         
REMARK 290       4555   X+1/2,-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        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000       38.28000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       20.98100            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       38.28000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       20.98100            
REMARK 290   SMTRY3   4  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: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PQS                                                   
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 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A2149  LIES ON A SPECIAL POSITION.                          
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 LINKS A GUANOSINE 5'-PHOSPHATE TO MOLYDOPTERIN (MPT)                 
REMARK 400  FORMING MOLYBDOPTERIN GUANINE DINUCLEOTIDE (MGD).                   
REMARK 400  THE ENZYME EXISTS AS A MONOMER IN SOLUTION AND IS A                 
REMARK 400  MEMBER OF THE MOBA FAMILY OF PROTEIN.                               
REMARK 400                                                                      
REMARK 400  ENGINEERED MUTATION GLY 22 LEU                                      
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     ASN A     2                                                      
REMARK 465     LEU A     3                                                      
REMARK 465     GLU A   192                                                      
REMARK 465     LYS A   193                                                      
REMARK 465     ARG A   194                                                      
REMARK 465     SER A   195                                                      
REMARK 465     HIS A   196                                                      
REMARK 465     HIS A   197                                                      
REMARK 465     HIS A   198                                                      
REMARK 465     HIS A   199                                                      
REMARK 465     HIS A   200                                                      
REMARK 465     HIS A   201                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     MET A   4    CG   SD   CE                                        
REMARK 470     LYS A  16    CG   CD   CE   NZ                                   
REMARK 470     ARG A  19    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     GLU A  59    CG   CD   OE1  OE2                                  
REMARK 470     GLU A 129    CD   OE1  OE2                                       
REMARK 470     LYS A 175    CD   CE   NZ                                        
REMARK 470     ARG A 189    NE   CZ   NH1  NH2                                  
REMARK 470     TRP A 190    CD1  CD2  NE1  CE2  CE3  CZ2  CZ3                   
REMARK 470     TRP A 190    CH2                                                 
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    HOH A  2078     O    HOH A  2165              1.65            
REMARK 500   O    HOH A  2078     O    HOH A  2164              2.10            
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    LEU A  73   CA  -  CB  -  CG  ANGL. DEV. =  14.0 DEGREES          
REMARK 500    ARG A 117   NE  -  CZ  -  NH1 ANGL. DEV. =   3.4 DEGREES          
REMARK 500    ARG A 117   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.5 DEGREES          
REMARK 500    ARG A 130   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500    ARG A 130   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.4 DEGREES          
REMARK 500    ARG A 140   CG  -  CD  -  NE  ANGL. DEV. = -13.5 DEGREES          
REMARK 500    ARG A 140   NE  -  CZ  -  NH1 ANGL. DEV. =  -6.0 DEGREES          
REMARK 500    ARG A 140   NE  -  CZ  -  NH2 ANGL. DEV. =   3.7 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    LYS A  16     -149.45     63.62                                   
REMARK 500    ALA A  17       19.36    140.03                                   
REMARK 500    ARG A  18       -3.70    -59.85                                   
REMARK 500    ASP A 119       -7.80     76.26                                   
REMARK 500    ARG A 140      -37.29    -38.10                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS                                         
REMARK 500                                                                      
REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH          
REMARK 500 CIS AND TRANS CONFORMATION.  CIS BONDS, IF ANY, ARE LISTED           
REMARK 500 ON CISPEP RECORDS.  TRANS IS DEFINED AS 180 +/- 30 AND               
REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES.                                  
REMARK 500                                 MODEL     OMEGA                      
REMARK 500 GLY A   15     LYS A   16                  144.92                    
REMARK 500 ALA A   17     ARG A   18                  141.64                    
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                              LI A 301  LI                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CIT A 302   O7                                                     
REMARK 620 2 CIT A 302   O5  100.6                                              
REMARK 620 3 CIT A 303   O5  113.8 104.4                                        
REMARK 620 4 CIT A 303   O7  123.6 111.0 102.4                                  
REMARK 620 5 CIT A 303   O4   80.3 172.7  68.9  74.0                            
REMARK 620 N                    1     2     3     4                             
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE LI A 301                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CIT A 302                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CIT A 303                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1E5K   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF THE MOLYBDENUM COFACTOR BIOSYNTHESIS PROTEIN    
REMARK 900 MOBA (PROTEIN FA) FROM ESCHERICHIA COLI AT NEAR ATOMIC RESOLUTION    
REMARK 900 RELATED ID: 1FR9   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF E. COLI MOBA                                            
REMARK 900 RELATED ID: 1FRW   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF E. COLI MOBA WITH BOUND GTP AND MANGANESE               
REMARK 900 RELATED ID: 1H4C   RELATED DB: PDB                                   
REMARK 900 BIOCHEMICAL AND STRUCTURAL ANALYSIS OF THE MOLYBDENUM COFACTOR       
REMARK 900 BIOSYNTHESIS PROTEIN MOBA                                            
REMARK 900 RELATED ID: 1H4E   RELATED DB: PDB                                   
REMARK 900 BIOCHEMICAL AND STRUCTURAL ANALYSIS OF THE MOLYBDENUM COFACTOR       
REMARK 900 BIOSYNTHESIS PROTEIN MOBA                                            
REMARK 900 RELATED ID: 1HJJ   RELATED DB: PDB                                   
REMARK 900 BIOCHEMICAL AND STRUCTURAL ANALYSIS OF THE MOLYBDENUM COFACTOR       
REMARK 900 BIOSYNTHESIS PROTEIN MOBA                                            
REMARK 900 RELATED ID: 1HJL   RELATED DB: PDB                                   
REMARK 900 BIOCHEMICAL AND STRUCTURAL ANALYSIS OF THE MOLYBDENUM COFACTOR       
REMARK 900 BIOSYNTHESIS PROTEIN MOBA                                            
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 G22L MUTANT                                                          
REMARK 999 C-TERMINAL TAG: SER-HIS-HIS-HIS-HIS-HIS-HIS                          
DBREF  1H4D A    1   194  UNP    P32173   MOBA_ECOLI       1    194             
DBREF  1H4D A  195   201  PDB    1H4D     1H4D           195    201             
SEQADV 1H4D LEU A   22  UNP  P32173    GLY    22 ENGINEERED MUTATION            
SEQRES   1 A  201  MET ASN LEU MET THR THR ILE THR GLY VAL VAL LEU ALA          
SEQRES   2 A  201  GLY GLY LYS ALA ARG ARG MET GLY LEU VAL ASP LYS GLY          
SEQRES   3 A  201  LEU LEU GLU LEU ASN GLY LYS PRO LEU TRP GLN HIS VAL          
SEQRES   4 A  201  ALA ASP ALA LEU MET THR GLN LEU SER HIS VAL VAL VAL          
SEQRES   5 A  201  ASN ALA ASN ARG HIS GLN GLU ILE TYR GLN ALA SER GLY          
SEQRES   6 A  201  LEU LYS VAL ILE GLU ASP SER LEU ALA ASP TYR PRO GLY          
SEQRES   7 A  201  PRO LEU ALA GLY MET LEU SER VAL MET GLN GLN GLU ALA          
SEQRES   8 A  201  GLY GLU TRP PHE LEU PHE CYS PRO CYS ASP THR PRO TYR          
SEQRES   9 A  201  ILE PRO PRO ASP LEU ALA ALA ARG LEU ASN HIS GLN ARG          
SEQRES  10 A  201  LYS ASP ALA PRO VAL VAL TRP VAL HIS ASP GLY GLU ARG          
SEQRES  11 A  201  ASP HIS PRO THR ILE ALA LEU VAL ASN ARG ALA ILE GLU          
SEQRES  12 A  201  PRO LEU LEU LEU GLU TYR LEU GLN ALA GLY GLU ARG ARG          
SEQRES  13 A  201  VAL MET VAL PHE MET ARG LEU ALA GLY GLY HIS ALA VAL          
SEQRES  14 A  201  ASP PHE SER ASP HIS LYS ASP ALA PHE VAL ASN VAL ASN          
SEQRES  15 A  201  THR PRO GLU GLU LEU ALA ARG TRP GLN GLU LYS ARG SER          
SEQRES  16 A  201  HIS HIS HIS HIS HIS HIS                                      
HET     LI  A 301       1                                                       
HET    CIT  A 302      13                                                       
HET    CIT  A 303      13                                                       
HETNAM      LI LITHIUM ION                                                      
HETNAM     CIT CITRIC ACID                                                      
FORMUL   2   LI    LI 1+                                                        
FORMUL   3  CIT    2(C6 H8 O7)                                                  
FORMUL   5  HOH   *185(H2 O)                                                    
HELIX    1   1 ASP A   24  LEU A   27  5                                   4    
HELIX    2   2 LEU A   35  LEU A   47  1                                  13    
HELIX    3   3 HIS A   57  ALA A   63  1                                   7    
HELIX    4   4 GLY A   78  GLU A   90  1                                  13    
HELIX    5   5 ASP A  108  GLN A  116  1                                   9    
HELIX    6   6 ILE A  142  ALA A  152  1                                  11    
HELIX    7   7 ARG A  156  ALA A  164  1                                   9    
HELIX    8   8 THR A  183  GLN A  191  1                                   9    
SHEET    1  AA 7 VAL A  68  ILE A  69  0                                        
SHEET    2  AA 7 VAL A  50  ASN A  53  1  O  VAL A  52   N  ILE A  69           
SHEET    3  AA 7 ILE A   7  LEU A  12  1  O  GLY A   9   N  VAL A  51           
SHEET    4  AA 7 TRP A  94  PRO A  99  1  O  TRP A  94   N  THR A   8           
SHEET    5  AA 7 ASP A 131  ASN A 139 -1  O  ALA A 136   N  PHE A  97           
SHEET    6  AA 7 VAL A 122  HIS A 126 -1  O  VAL A 123   N  LEU A 137           
SHEET    7  AA 7 HIS A 167  ASP A 170  1  O  HIS A 167   N  TRP A 124           
SHEET    1  AB 2 GLU A  29  LEU A  30  0                                        
SHEET    2  AB 2 LYS A  33  PRO A  34 -1  O  LYS A  33   N  LEU A  30           
LINK        LI    LI A 301                 O7  CIT A 302     1555   1555  1.51  
LINK        LI    LI A 301                 O5  CIT A 302     1555   1555  1.60  
LINK        LI    LI A 301                 O5  CIT A 303     1555   1555  1.59  
LINK        LI    LI A 301                 O7  CIT A 303     1555   1555  1.45  
LINK        LI    LI A 301                 O4  CIT A 303     1555   1555  3.13  
SITE     1 AC1  3 HIS A  57  CIT A 302  CIT A 303                               
SITE     1 AC2 15 GLY A  21  LEU A  22  ASP A  24  ARG A  56                    
SITE     2 AC2 15 HIS A  57  ARG A 155  ARG A 156  VAL A 157                    
SITE     3 AC2 15 MET A 158  VAL A 159  ARG A 162   LI A 301                    
SITE     4 AC2 15 CIT A 303  HOH A2178  HOH A2179                               
SITE     1 AC3 16 MET A  20  GLY A  21  ARG A  56  HIS A  57                    
SITE     2 AC3 16 PRO A 133  VAL A 157  MET A 158   LI A 301                    
SITE     3 AC3 16 CIT A 302  HOH A2179  HOH A2180  HOH A2181                    
SITE     4 AC3 16 HOH A2182  HOH A2183  HOH A2184  HOH A2185                    
CRYST1   76.560   41.962   54.319  90.00  90.00  90.00 P 21 21 2     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      0.013062  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.023831  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.018410        0.00000