HEADER    BIOSYNTHETIC PROTEIN                    20-AUG-07   2Z7E              
TITLE     CRYSTAL STRUCTURE OF AQUIFEX AEOLICUS ISCU WITH BOUND [2FE-2S] CLUSTER
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: NIFU-LIKE PROTEIN;                                         
COMPND   3 CHAIN: A, B, C;                                                      
COMPND   4 SYNONYM: ISCU PROTEIN;                                               
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: AQUIFEX AEOLICUS;                               
SOURCE   3 ORGANISM_TAXID: 63363;                                               
SOURCE   4 STRAIN: VF5;                                                         
SOURCE   5 GENE: AQ_896;                                                        
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: C41(DE3);                                  
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET21A(+)                                 
KEYWDS    IRON-SULFUR CLUSTER, IRON, BIOSYNTHESIS, [2FE-2S], ISC, ISCU, NIFU,   
KEYWDS   2 ASYMMETRIC TRIMER, THREE CONSERVED CYS, BIOSYNTHETIC PROTEIN         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    Y.SHIMOMURA,K.WADA,Y.TAKAHASHI,K.FUKUYAMA                             
REVDAT   5   30-OCT-24 2Z7E    1       REMARK                                   
REVDAT   4   10-NOV-21 2Z7E    1       REMARK SEQADV                            
REVDAT   3   24-FEB-09 2Z7E    1       VERSN                                    
REVDAT   2   07-OCT-08 2Z7E    1       JRNL                                     
REVDAT   1   19-AUG-08 2Z7E    0                                                
JRNL        AUTH   Y.SHIMOMURA,K.WADA,K.FUKUYAMA,Y.TAKAHASHI                    
JRNL        TITL   THE ASYMMETRIC TRIMERIC ARCHITECTURE OF [2FE-2S] ISCU:       
JRNL        TITL 2 IMPLICATIONS FOR ITS SCAFFOLDING DURING IRON-SULFUR CLUSTER  
JRNL        TITL 3 BIOSYNTHESIS                                                 
JRNL        REF    J.MOL.BIOL.                   V. 383   133 2008              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   18723024                                                     
JRNL        DOI    10.1016/J.JMB.2008.08.015                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.30 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 47.25                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 1635058.450                    
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 96.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 24440                          
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 SET) : 0.225                           
REMARK   3   FREE R VALUE                     : 0.252                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1226                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.007                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.30                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.44                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 81.30                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 3189                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2770                       
REMARK   3   BIN FREE R VALUE                    : 0.2970                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.40                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 181                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.022                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3087                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 24                                      
REMARK   3   SOLVENT ATOMS            : 162                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 28.00                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 49.90                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -5.37000                                             
REMARK   3    B22 (A**2) : -12.50000                                            
REMARK   3    B33 (A**2) : 17.86000                                             
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 COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.31                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.27                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.35                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.34                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.007                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.300                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 22.60                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.840                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 1.430 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 2.460 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 2.050 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 3.010 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.39                                                 
REMARK   3   BSOL        : 74.56                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : FES_XPLOR_PARAM.TXT                            
REMARK   3  PARAMETER FILE  4  : SO4_XPLOR_PARAM.TXT                            
REMARK   3  PARAMETER FILE  5  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER_REP.TOP                                  
REMARK   3  TOPOLOGY FILE  3   : FES_XPLOR_TOP.TXT                              
REMARK   3  TOPOLOGY FILE  4   : SO4_XPLOR_TOP.TXT                              
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2Z7E COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 21-AUG-07.                  
REMARK 100 THE DEPOSITION ID IS D_1000027614.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 26-MAR-06                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SPRING-8                           
REMARK 200  BEAMLINE                       : BL41XU                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.7407, 1.7423, 1.6947, 1.5000     
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 24440                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.300                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 47.250                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.5                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: MAD                                            
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD                          
REMARK 200 SOFTWARE USED: CNS                                                   
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 53.24                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.63                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 1.6M AMMONIUM SULFATE, 0.5M LITHIUM      
REMARK 280  CHLORIDE, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K           
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       36.45150            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       61.06800            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       36.45150            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       61.06800            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A TRIMER WHICH CONSISTS OF THE    
REMARK 300 THREE PROTOMERS IN THE ASYMMETRIC UNIT.                              
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TRIMERIC                          
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 4800 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 17750 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -104.0 KCAL/MOL                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C                               
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: HEXAMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 13550 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 31560 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -252.0 KCAL/MOL                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C                               
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2 -1.000000  0.000000  0.000000       72.90300            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000      122.13600            
REMARK 350   BIOMT3   2  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 S    SO4 A 160  LIES ON A SPECIAL POSITION.                          
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     GLU A   140                                                      
REMARK 465     GLU A   141                                                      
REMARK 465     GLU A   142                                                      
REMARK 465     GLU A   143                                                      
REMARK 465     GLU A   144                                                      
REMARK 465     GLN A   145                                                      
REMARK 465     GLU A   146                                                      
REMARK 465     GLU A   147                                                      
REMARK 465     SER A   148                                                      
REMARK 465     LYS A   149                                                      
REMARK 465     GLU A   150                                                      
REMARK 465     PHE A   151                                                      
REMARK 465     GLU A   152                                                      
REMARK 465     PHE A   153                                                      
REMARK 465     LEU A   154                                                      
REMARK 465     SER A   155                                                      
REMARK 465     GLY A   156                                                      
REMARK 465     THR A   157                                                      
REMARK 465     MET B     1                                                      
REMARK 465     SER B     2                                                      
REMARK 465     GLU B   143                                                      
REMARK 465     GLU B   144                                                      
REMARK 465     GLN B   145                                                      
REMARK 465     GLU B   146                                                      
REMARK 465     GLU B   147                                                      
REMARK 465     SER B   148                                                      
REMARK 465     LYS B   149                                                      
REMARK 465     GLU B   150                                                      
REMARK 465     PHE B   151                                                      
REMARK 465     GLU B   152                                                      
REMARK 465     PHE B   153                                                      
REMARK 465     LEU B   154                                                      
REMARK 465     SER B   155                                                      
REMARK 465     GLY B   156                                                      
REMARK 465     THR B   157                                                      
REMARK 465     MET C     1                                                      
REMARK 465     TYR C   139                                                      
REMARK 465     GLU C   140                                                      
REMARK 465     GLU C   141                                                      
REMARK 465     GLU C   142                                                      
REMARK 465     GLU C   143                                                      
REMARK 465     GLU C   144                                                      
REMARK 465     GLN C   145                                                      
REMARK 465     GLU C   146                                                      
REMARK 465     GLU C   147                                                      
REMARK 465     SER C   148                                                      
REMARK 465     LYS C   149                                                      
REMARK 465     GLU C   150                                                      
REMARK 465     PHE C   151                                                      
REMARK 465     GLU C   152                                                      
REMARK 465     PHE C   153                                                      
REMARK 465     LEU C   154                                                      
REMARK 465     SER C   155                                                      
REMARK 465     GLY C   156                                                      
REMARK 465     THR C   157                                                      
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     SER A   2    OG                                                  
REMARK 470     GLU A   4    CG   CD   OE1  OE2                                  
REMARK 470     LYS A  91    CG   CD   CE   NZ                                   
REMARK 470     GLN A 103    CG   CD   OE1  NE2                                  
REMARK 470     GLU A 130    CG   CD   OE1  OE2                                  
REMARK 470     LYS A 134    CG   CD   CE   NZ                                   
REMARK 470     ASP A 137    CG   OD1  OD2                                       
REMARK 470     TYR A 139    CG   CD1  CD2  CE1  CE2  CZ   OH                    
REMARK 470     LYS B   8    CG   CD   CE   NZ                                   
REMARK 470     VAL B   9    CG1  CG2                                            
REMARK 470     GLU B  54    CG   CD   OE1  OE2                                  
REMARK 470     TYR B 139    CG   CD1  CD2  CE1  CE2  CZ   OH                    
REMARK 470     GLU B 140    CG   CD   OE1  OE2                                  
REMARK 470     GLU B 141    CG   CD   OE1  OE2                                  
REMARK 470     GLU B 142    CG   CD   OE1  OE2                                  
REMARK 470     SER C   2    OG                                                  
REMARK 470     ARG C  17    CG   CD   NE   CZ   NH1  NH2                        
REMARK 470     ASP C  24    CG   OD1  OD2                                       
REMARK 470     GLN C  30    CG   CD   OE1  NE2                                  
REMARK 470     ASN C  33    CG   OD1  ND2                                       
REMARK 470     LYS C  45    CG   CD   CE   NZ                                   
REMARK 470     GLU C  54    CG   CD   OE1  OE2                                  
REMARK 470     PHE C  61    CG   CD1  CD2  CE1  CE2  CZ                         
REMARK 470     LYS C  91    CG   CD   CE   NZ                                   
REMARK 470     ILE C 105    CG1  CG2  CD1                                       
REMARK 470     HIS C 106    CG   ND1  CD2  CE1  NE2                             
REMARK 470     THR C 108    OG1  CG2                                            
REMARK 470     ASN C 109    CG   OD1  ND2                                       
REMARK 470     LEU C 110    CG   CD1  CD2                                       
REMARK 470     GLU C 113    CG   CD   OE1  OE2                                  
REMARK 470     LYS C 134    CG   CD   CE   NZ                                   
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   SG   CYS C    36     SG   CYS C    36     2665     2.10            
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    CYS A  63      107.17    -18.00                                   
REMARK 500    LEU A 110       21.12   -149.79                                   
REMARK 500    TYR B   5       90.01    -62.96                                   
REMARK 500    ASN B  50       14.92   -144.70                                   
REMARK 500    PRO B 102       -7.46    -58.96                                   
REMARK 500    LYS B 104       32.45    -85.84                                   
REMARK 500    CYS B 138      104.95    -51.16                                   
REMARK 500    GLU B 140     -142.23    -66.19                                   
REMARK 500    GLU B 141      -21.54     89.12                                   
REMARK 500    ASN C  50       -1.12   -150.72                                   
REMARK 500    LYS C 104      -75.40    -93.88                                   
REMARK 500    ASN C 109      103.87     51.37                                   
REMARK 500    LEU C 110     -108.27    -59.87                                   
REMARK 500    GLN C 126     -138.73    -81.43                                   
REMARK 500    PRO C 136     -171.82    -52.79                                   
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                             FES B 158  FE1                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B  36   SG                                                     
REMARK 620 2 FES B 158   S1  116.3                                              
REMARK 620 3 FES B 158   S2  127.4  90.9                                        
REMARK 620 4 HIS B 106   NE2 113.1 111.5  94.4                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             FES B 158  FE2                           
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 CYS B  63   SG                                                     
REMARK 620 2 FES B 158   S1  115.6                                              
REMARK 620 3 FES B 158   S2  115.4  91.6                                        
REMARK 620 4 CYS B 107   SG  109.2 116.9 107.1                                  
REMARK 620 N                    1     2     3                                   
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 158                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 159                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 160                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 C 158                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FES B 158                 
DBREF  2Z7E A    1   157  UNP    O67045   NIFU_AQUAE       1    157             
DBREF  2Z7E B    1   157  UNP    O67045   NIFU_AQUAE       1    157             
DBREF  2Z7E C    1   157  UNP    O67045   NIFU_AQUAE       1    157             
SEQADV 2Z7E ALA A   38  UNP  O67045    ASP    38 ENGINEERED MUTATION            
SEQADV 2Z7E ALA B   38  UNP  O67045    ASP    38 ENGINEERED MUTATION            
SEQADV 2Z7E ALA C   38  UNP  O67045    ASP    38 ENGINEERED MUTATION            
SEQRES   1 A  157  MET SER PHE GLU TYR ASN GLU LYS VAL LEU ASP HIS PHE          
SEQRES   2 A  157  LEU ASN PRO ARG ASN VAL GLY VAL LEU GLU ASP ALA ASN          
SEQRES   3 A  157  GLY VAL GLY GLN CYS GLY ASN PRO ALA CYS GLY ALA ALA          
SEQRES   4 A  157  MET LEU PHE THR ILE LYS VAL ASN PRO GLU ASN ASP VAL          
SEQRES   5 A  157  ILE GLU ASP VAL ARG PHE LYS THR PHE GLY CYS GLY SER          
SEQRES   6 A  157  ALA ILE ALA VAL SER SER MET LEU THR GLU MET VAL LYS          
SEQRES   7 A  157  GLY LYS PRO ILE GLN TYR ALA LEU ASN LEU THR TYR LYS          
SEQRES   8 A  157  ASP ILE PHE GLU GLU LEU GLY GLY LEU PRO PRO GLN LYS          
SEQRES   9 A  157  ILE HIS CYS THR ASN LEU GLY LEU GLU THR LEU HIS VAL          
SEQRES  10 A  157  ALA ILE LYS ASP TYR LEU MET LYS GLN GLY ARG VAL GLU          
SEQRES  11 A  157  GLU ALA SER LYS ILE PRO ASP CYS TYR GLU GLU GLU GLU          
SEQRES  12 A  157  GLU GLN GLU GLU SER LYS GLU PHE GLU PHE LEU SER GLY          
SEQRES  13 A  157  THR                                                          
SEQRES   1 B  157  MET SER PHE GLU TYR ASN GLU LYS VAL LEU ASP HIS PHE          
SEQRES   2 B  157  LEU ASN PRO ARG ASN VAL GLY VAL LEU GLU ASP ALA ASN          
SEQRES   3 B  157  GLY VAL GLY GLN CYS GLY ASN PRO ALA CYS GLY ALA ALA          
SEQRES   4 B  157  MET LEU PHE THR ILE LYS VAL ASN PRO GLU ASN ASP VAL          
SEQRES   5 B  157  ILE GLU ASP VAL ARG PHE LYS THR PHE GLY CYS GLY SER          
SEQRES   6 B  157  ALA ILE ALA VAL SER SER MET LEU THR GLU MET VAL LYS          
SEQRES   7 B  157  GLY LYS PRO ILE GLN TYR ALA LEU ASN LEU THR TYR LYS          
SEQRES   8 B  157  ASP ILE PHE GLU GLU LEU GLY GLY LEU PRO PRO GLN LYS          
SEQRES   9 B  157  ILE HIS CYS THR ASN LEU GLY LEU GLU THR LEU HIS VAL          
SEQRES  10 B  157  ALA ILE LYS ASP TYR LEU MET LYS GLN GLY ARG VAL GLU          
SEQRES  11 B  157  GLU ALA SER LYS ILE PRO ASP CYS TYR GLU GLU GLU GLU          
SEQRES  12 B  157  GLU GLN GLU GLU SER LYS GLU PHE GLU PHE LEU SER GLY          
SEQRES  13 B  157  THR                                                          
SEQRES   1 C  157  MET SER PHE GLU TYR ASN GLU LYS VAL LEU ASP HIS PHE          
SEQRES   2 C  157  LEU ASN PRO ARG ASN VAL GLY VAL LEU GLU ASP ALA ASN          
SEQRES   3 C  157  GLY VAL GLY GLN CYS GLY ASN PRO ALA CYS GLY ALA ALA          
SEQRES   4 C  157  MET LEU PHE THR ILE LYS VAL ASN PRO GLU ASN ASP VAL          
SEQRES   5 C  157  ILE GLU ASP VAL ARG PHE LYS THR PHE GLY CYS GLY SER          
SEQRES   6 C  157  ALA ILE ALA VAL SER SER MET LEU THR GLU MET VAL LYS          
SEQRES   7 C  157  GLY LYS PRO ILE GLN TYR ALA LEU ASN LEU THR TYR LYS          
SEQRES   8 C  157  ASP ILE PHE GLU GLU LEU GLY GLY LEU PRO PRO GLN LYS          
SEQRES   9 C  157  ILE HIS CYS THR ASN LEU GLY LEU GLU THR LEU HIS VAL          
SEQRES  10 C  157  ALA ILE LYS ASP TYR LEU MET LYS GLN GLY ARG VAL GLU          
SEQRES  11 C  157  GLU ALA SER LYS ILE PRO ASP CYS TYR GLU GLU GLU GLU          
SEQRES  12 C  157  GLU GLN GLU GLU SER LYS GLU PHE GLU PHE LEU SER GLY          
SEQRES  13 C  157  THR                                                          
HET    SO4  A 158       5                                                       
HET    SO4  A 159       5                                                       
HET    SO4  A 160       5                                                       
HET    FES  B 158       4                                                       
HET    SO4  C 158       5                                                       
HETNAM     SO4 SULFATE ION                                                      
HETNAM     FES FE2/S2 (INORGANIC) CLUSTER                                       
FORMUL   4  SO4    4(O4 S 2-)                                                   
FORMUL   7  FES    FE2 S2                                                       
FORMUL   9  HOH   *162(H2 O)                                                    
HELIX    1   1 PHE A    3  ASN A   15  1                                  13    
HELIX    2   2 SER A   65  LYS A   78  1                                  14    
HELIX    3   3 PRO A   81  LEU A   88  1                                   8    
HELIX    4   4 THR A   89  GLY A   98  1                                  10    
HELIX    5   5 LEU A  110  LYS A  125  1                                  16    
HELIX    6   6 ARG A  128  ILE A  135  1                                   8    
HELIX    7   7 ASN B    6  ASN B   15  1                                  10    
HELIX    8   8 CYS B   63  LYS B   78  1                                  16    
HELIX    9   9 PRO B   81  LEU B   88  1                                   8    
HELIX   10  10 THR B   89  LEU B   97  1                                   9    
HELIX   11  11 PRO B  101  GLN B  103  5                                   3    
HELIX   12  12 LYS B  104  GLN B  126  1                                  23    
HELIX   13  13 ARG B  128  LYS B  134  1                                   7    
HELIX   14  14 ASN C    6  ASN C   15  1                                  10    
HELIX   15  15 ASN C   33  GLY C   37  5                                   5    
HELIX   16  16 GLY C   64  LYS C   78  1                                  15    
HELIX   17  17 PRO C   81  ASN C   87  1                                   7    
HELIX   18  18 THR C   89  GLY C   98  1                                  10    
HELIX   19  19 GLY C  111  GLN C  126  1                                  16    
HELIX   20  20 ARG C  128  LYS C  134  1                                   7    
SHEET    1   A 3 GLY A  27  ASN A  33  0                                        
SHEET    2   A 3 ALA A  38  VAL A  46 -1  O  ALA A  38   N  ASN A  33           
SHEET    3   A 3 ILE A  53  PHE A  61 -1  O  ARG A  57   N  THR A  43           
SHEET    1   B 3 GLY B  27  ASN B  33  0                                        
SHEET    2   B 3 ALA B  38  VAL B  46 -1  O  PHE B  42   N  GLY B  29           
SHEET    3   B 3 ILE B  53  THR B  60 -1  O  ARG B  57   N  THR B  43           
SHEET    1   C 3 GLY C  27  CYS C  31  0                                        
SHEET    2   C 3 ALA C  39  VAL C  46 -1  O  PHE C  42   N  GLY C  29           
SHEET    3   C 3 ILE C  53  PHE C  61 -1  O  PHE C  61   N  ALA C  39           
SSBOND   1 CYS A   31    CYS A  138                          1555   1555  2.04  
SSBOND   2 CYS A   36    CYS A  107                          1555   1555  2.04  
SSBOND   3 CYS B   31    CYS B  138                          1555   1555  2.03  
SSBOND   4 CYS C   31    CYS C  138                          1555   1555  2.04  
SSBOND   5 CYS C   63    CYS C  107                          1555   1555  2.03  
LINK         SG  CYS B  36                FE1  FES B 158     1555   1555  2.23  
LINK         SG  CYS B  63                FE2  FES B 158     1555   1555  2.34  
LINK         NE2 HIS B 106                FE1  FES B 158     1555   1555  2.33  
LINK         SG  CYS B 107                FE2  FES B 158     1555   1555  2.28  
SITE     1 AC1  6 ILE A 105  HIS A 106  CYS A 107  HOH A 208                    
SITE     2 AC1  6 HOH A 225  HOH C 179                                          
SITE     1 AC2  8 VAL A  21  LEU A  22  GLU A  23  ARG A  57                    
SITE     2 AC2  8 HOH A 205  HOH A 211  HOH B 198  HOH B 207                    
SITE     1 AC3  4 ASN A  18  HOH A 166  HOH A 190  HOH A 191                    
SITE     1 AC4  6 SER B  65  LYS B 104  TYR C   5  ASN C   6                    
SITE     2 AC4  6 GLY C  99  LEU C 100                                          
SITE     1 AC5  4 CYS B  36  CYS B  63  HIS B 106  CYS B 107                    
CRYST1   72.903  122.136   62.051  90.00  90.00  90.00 P 21 21 2    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      0.013717  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.008188  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.016116        0.00000