HEADER    TRANSCRIPTION                           13-APR-12   4ENF              
TITLE     CRYSTAL STRUCTURE OF THE CAP-BINDING DOMAIN OF POLYMERASE BASIC       
TITLE    2 PROTEIN 2 FROM INFLUENZA VIRUS A/PUERTO RICO/8/34(H1N1)              
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: POLYMERASE BASIC PROTEIN 2;                                
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: CAP-BINDING DOMAIN, RESIDUES 318-483;                      
COMPND   5 SYNONYM: RNA-DIRECTED RNA POLYMERASE SUBUNIT P3;                     
COMPND   6 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: INFLUENZA A VIRUS;                              
SOURCE   3 ORGANISM_TAXID: 211044;                                              
SOURCE   4 STRAIN: 1934 H1N1;                                                   
SOURCE   5 GENE: PB2;                                                           
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    CAP-BINDING PROTEIN, TRANSCRIPTION                                    
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    G.MENG,Y.LIU,X.ZHENG                                                  
REVDAT   3   20-MAR-24 4ENF    1       REMARK SEQADV                            
REVDAT   2   17-JUL-13 4ENF    1       JRNL                                     
REVDAT   1   06-MAR-13 4ENF    0                                                
JRNL        AUTH   Y.LIU,K.QIN,G.MENG,J.ZHANG,J.ZHOU,G.ZHAO,M.LUO,X.ZHENG       
JRNL        TITL   STRUCTURAL AND FUNCTIONAL CHARACTERIZATION OF K339T          
JRNL        TITL 2 SUBSTITUTION IDENTIFIED IN THE PB2 SUBUNIT CAP-BINDING       
JRNL        TITL 3 POCKET OF INFLUENZA A VIRUS                                  
JRNL        REF    J.BIOL.CHEM.                  V. 288 11013 2013              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   23436652                                                     
JRNL        DOI    10.1074/JBC.M112.392878                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.32 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0110                                      
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) : 1.32                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 14.29                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 93.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 29803                          
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) : 0.130                           
REMARK   3   R VALUE            (WORKING SET) : 0.127                           
REMARK   3   FREE R VALUE                     : 0.172                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1589                            
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) : 1.32                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.35                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 2043                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 89.60                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.1420                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 112                          
REMARK   3   BIN FREE R VALUE                    : 0.2050                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1299                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 20                                      
REMARK   3   SOLVENT ATOMS            : 221                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 17.18                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.03000                                             
REMARK   3    B22 (A**2) : 0.00000                                              
REMARK   3    B33 (A**2) : 0.03000                                              
REMARK   3    B12 (A**2) : 0.03000                                              
REMARK   3    B13 (A**2) : -0.02000                                             
REMARK   3    B23 (A**2) : -0.01000                                             
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.056         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.054         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.027         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.355         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.974                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.956                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1382 ; 0.027 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  1856 ; 2.234 ; 1.961       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   177 ; 6.607 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    66 ;40.239 ;23.182       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   267 ;13.002 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    15 ;14.242 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   205 ; 0.162 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1034 ; 0.014 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):   841 ; 2.758 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1357 ; 4.033 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   541 ; 5.043 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   493 ; 7.083 ; 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):  1382 ; 2.956 ; 3.000       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):   221 ;14.700 ; 3.000       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  1360 ;10.821 ; 3.000       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.40                                          
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 4ENF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 24-APR-12.                  
REMARK 100 THE DEPOSITION ID IS D_1000071837.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 28-MAY-10                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRF                               
REMARK 200  BEAMLINE                       : BL17U                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.9795                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARMOSAIC 225 MM CCD               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 31393                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.320                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 15.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 89.2                               
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: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 35.44                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.91                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.2M POTASSIUM NITRATE, 20% PEG 3350,    
REMARK 280  8% 1,4-BUTANEDIOL, 0.1M HEPES PH7.5, VAPOR DIFFUSION, HANGING       
REMARK 280  DROP, TEMPERATURE 293K                                              
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1                              
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,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                                                                      
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: PISA                                                  
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 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     GLY A   314                                                      
REMARK 465     SER A   315                                                      
REMARK 465     HIS A   316                                                      
REMARK 465     MET A   317                                                      
REMARK 465     ARG A   318                                                      
REMARK 465     ILE A   319                                                      
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   779     O    HOH A   820              1.52            
REMARK 500   O    HOH A   684     O    HOH A   817              1.60            
REMARK 500   O    HOH A   724     O    HOH A   780              1.80            
REMARK 500   O    HOH A   624     O    HOH A   806              1.87            
REMARK 500   O    HOH A   626     O    HOH A   804              1.88            
REMARK 500   OD1  ASN A   419     O    HOH A   739              1.90            
REMARK 500   O    HOH A   670     O    HOH A   819              1.91            
REMARK 500   O    HOH A   760     O    HOH A   799              1.94            
REMARK 500   OD1  ASP A   390     O    HOH A   816              1.95            
REMARK 500   O    HOH A   765     O    HOH A   779              2.02            
REMARK 500   ND2  ASN A   419     O    HOH A   812              2.02            
REMARK 500   O    HOH A   729     O    HOH A   762              2.03            
REMARK 500   O    GLN A   426     O    HOH A   756              2.03            
REMARK 500   O    HOH A   749     O    HOH A   756              2.09            
REMARK 500   OG   SER A   393     O    HOH A   724              2.12            
REMARK 500   CG   ASP A   390     O    HOH A   816              2.13            
REMARK 500   OD1  ASN A   419     O    HOH A   812              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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   NH2  ARG A   375     O    HOH A   780     1455     1.64            
REMARK 500   OD1  ASP A   417     O    HOH A   669     1556     2.03            
REMARK 500   O    HOH A   679     O    HOH A   730     1655     2.06            
REMARK 500   O    HOH A   679     O    HOH A   759     1655     2.17            
REMARK 500   CB   MET A   483     O    HOH A   813     1554     2.17            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    GLU A 472   CD    GLU A 472   OE1     0.085                       
REMARK 500    GLU A 472   CD    GLU A 472   OE2     0.124                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ARG A 340   NE  -  CZ  -  NH1 ANGL. DEV. =   3.1 DEGREES          
REMARK 500    ARG A 375   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500    ARG A 380   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.3 DEGREES          
REMARK 500    PHE A 446   CB  -  CG  -  CD1 ANGL. DEV. =   4.4 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ALA A 424     -131.85    105.52                                   
REMARK 500    ASP A 441      111.59   -176.46                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY                                       
REMARK 500                                                                      
REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY                       
REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER                 
REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME;                     
REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;                            
REMARK 500 I=INSERTION CODE).                                                   
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        ANGLE                                           
REMARK 500    GLY A 359        -14.87                                           
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 NO3 A 501                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO3 A 502                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BU1 A 503                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BU1 A 504                 
DBREF  4ENF A  318   483  UNP    P03428   PB2_I34A1      318    483             
SEQADV 4ENF GLY A  314  UNP  P03428              EXPRESSION TAG                 
SEQADV 4ENF SER A  315  UNP  P03428              EXPRESSION TAG                 
SEQADV 4ENF HIS A  316  UNP  P03428              EXPRESSION TAG                 
SEQADV 4ENF MET A  317  UNP  P03428              EXPRESSION TAG                 
SEQRES   1 A  170  GLY SER HIS MET ARG ILE SER SER SER PHE SER PHE GLY          
SEQRES   2 A  170  GLY PHE THR PHE LYS ARG THR SER GLY SER SER VAL LYS          
SEQRES   3 A  170  ARG GLU GLU GLU VAL LEU THR GLY ASN LEU GLN THR LEU          
SEQRES   4 A  170  LYS ILE ARG VAL HIS GLU GLY TYR GLU GLU PHE THR MET          
SEQRES   5 A  170  VAL GLY ARG ARG ALA THR ALA ILE LEU ARG LYS ALA THR          
SEQRES   6 A  170  ARG ARG LEU ILE GLN LEU ILE VAL SER GLY ARG ASP GLU          
SEQRES   7 A  170  GLN SER ILE ALA GLU ALA ILE ILE VAL ALA MET VAL PHE          
SEQRES   8 A  170  SER GLN GLU ASP CYS MET ILE LYS ALA VAL ARG GLY ASP          
SEQRES   9 A  170  LEU ASN PHE VAL ASN ARG ALA ASN GLN ARG LEU ASN PRO          
SEQRES  10 A  170  MET HIS GLN LEU LEU ARG HIS PHE GLN LYS ASP ALA LYS          
SEQRES  11 A  170  VAL LEU PHE GLN ASN TRP GLY VAL GLU PRO ILE ASP ASN          
SEQRES  12 A  170  VAL MET GLY MET ILE GLY ILE LEU PRO ASP MET THR PRO          
SEQRES  13 A  170  SER ILE GLU MET SER MET ARG GLY VAL ARG ILE SER LYS          
SEQRES  14 A  170  MET                                                          
HET    NO3  A 501       4                                                       
HET    NO3  A 502       4                                                       
HET    BU1  A 503       6                                                       
HET    BU1  A 504       6                                                       
HETNAM     NO3 NITRATE ION                                                      
HETNAM     BU1 1,4-BUTANEDIOL                                                   
FORMUL   2  NO3    2(N O3 1-)                                                   
FORMUL   4  BU1    2(C4 H10 O2)                                                 
FORMUL   6  HOH   *221(H2 O)                                                    
HELIX    1   1 ASP A  390  GLN A  406  1                                  17    
HELIX    2   2 GLU A  407  LYS A  412  1                                   6    
HELIX    3   3 ASN A  429  ASP A  441  1                                  13    
HELIX    4   4 ALA A  442  GLY A  450  1                                   9    
SHEET    1   A 8 PHE A 323  PHE A 325  0                                        
SHEET    2   A 8 PHE A 328  GLY A 335 -1  O  PHE A 330   N  PHE A 323           
SHEET    3   A 8 GLU A 361  VAL A 366 -1  O  VAL A 366   N  THR A 329           
SHEET    4   A 8 ALA A 370  ALA A 377 -1  O  LYS A 376   N  GLU A 361           
SHEET    5   A 8 ARG A 380  GLY A 388 -1  O  GLN A 383   N  ARG A 375           
SHEET    6   A 8 VAL A 478  SER A 481  1  O  SER A 481   N  VAL A 386           
SHEET    7   A 8 MET A 460  ILE A 463 -1  N  ILE A 461   O  ILE A 480           
SHEET    8   A 8 PRO A 469  SER A 470 -1  O  SER A 470   N  GLY A 462           
SHEET    1   B 2 VAL A 338  LEU A 345  0                                        
SHEET    2   B 2 THR A 351  GLU A 358 -1  O  GLU A 358   N  VAL A 338           
SHEET    1   C 2 VAL A 451  PRO A 453  0                                        
SHEET    2   C 2 MET A 473  MET A 475 -1  O  SER A 474   N  GLU A 452           
SITE     1 AC1  6 LEU A 428  ASN A 429  HIS A 432  ARG A 436                    
SITE     2 AC1  6 MET A 473  HOH A 707                                          
SITE     1 AC2  6 ILE A 354  ARG A 355  ASN A 429  PRO A 430                    
SITE     2 AC2  6 MET A 431  HOH A 692                                          
SITE     1 AC3  9 ILE A 454  ASP A 455  VAL A 457  MET A 460                    
SITE     2 AC3  9 ARG A 479  HOH A 662  HOH A 684  HOH A 760                    
SITE     3 AC3  9 HOH A 817                                                     
SITE     1 AC4  8 ILE A 382  GLU A 452  GLY A 477  ARG A 479                    
SITE     2 AC4  8 HOH A 723  HOH A 733  HOH A 745  HOH A 761                    
CRYST1   29.489   37.044   38.335  71.10  69.84  75.85 P 1           1          
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      0.033911 -0.008549 -0.010572        0.00000                         
SCALE2      0.000000  0.027840 -0.007598        0.00000                         
SCALE3      0.000000  0.000000  0.028805        0.00000