HEADER    OXIDOREDUCTASE                          15-JAN-10   3LF5              
TITLE     STRUCTURE OF HUMAN NADH CYTOCHROME B5 OXIDOREDUCTASE (NCB5OR) B5      
TITLE    2 DOMAIN TO 1.25A RESOLUTION                                           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CYTOCHROME B5 REDUCTASE 4;                                 
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: UNP RESIDUES 51-137;                                       
COMPND   5 SYNONYM: FLAVOHEMOPROTEIN B5/B5R, B5+B5R, CB5/CB5R, N-TERMINAL       
COMPND   6 CYTOCHROME B5 AND CYTOCHROME B5 OXIDOREDUCTASE DOMAIN-CONTAINING     
COMPND   7 PROTEIN;                                                             
COMPND   8 EC: 1.6.2.2;                                                         
COMPND   9 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: CYB5R4, NCB5OR;                                                
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET22B                                    
KEYWDS    NCB5OR, ELECTRON TRANSFER, REDOX, HEME, ENDOPLASMIC RETICULUM, FAD,   
KEYWDS   2 FLAVOPROTEIN, IRON, METAL-BINDING, NAD, OXIDOREDUCTASE               
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.DENG,S.PARTHASARATHY,W.WANG,B.R.GIBNEY,K.P.BATTAILE,S.LOVELL,       
AUTHOR   2 D.R.BENSON,H.ZHU                                                     
REVDAT   4   06-SEP-23 3LF5    1       REMARK SEQADV LINK                       
REVDAT   3   11-OCT-17 3LF5    1       REMARK                                   
REVDAT   2   29-MAR-17 3LF5    1       JRNL   VERSN                             
REVDAT   1   14-JUL-10 3LF5    0                                                
JRNL        AUTH   B.DENG,S.PARTHASARATHY,W.WANG,B.R.GIBNEY,K.P.BATTAILE,       
JRNL        AUTH 2 S.LOVELL,D.R.BENSON,H.ZHU                                    
JRNL        TITL   STUDY OF THE INDIVIDUAL CYTOCHROME B5 AND CYTOCHROME B5      
JRNL        TITL 2 REDUCTASE DOMAINS OF NCB5OR REVEALS A UNIQUE HEME POCKET AND 
JRNL        TITL 3 A POSSIBLE ROLE OF THE CS DOMAIN.                            
JRNL        REF    J.BIOL.CHEM.                  V. 285 30181 2010              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   20630863                                                     
JRNL        DOI    10.1074/JBC.M110.120329                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.25 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC REFMAC_5.5.0109                               
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : NULL                                          
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.25                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 18.91                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 48981                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.147                           
REMARK   3   FREE R VALUE                     : 0.173                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.082                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2489                            
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) : 1.25                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.28                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 3238                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 93.50                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2330                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 184                          
REMARK   3   BIN FREE R VALUE                    : 0.2700                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 1387                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 96                                      
REMARK   3   SOLVENT ATOMS            : 145                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 17.46                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 12.26                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.47400                                              
REMARK   3    B22 (A**2) : -0.65500                                             
REMARK   3    B33 (A**2) : 0.00400                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -0.47700                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.046         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.043         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): NULL          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL          
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.973                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.968                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  1742 ; 0.013 ; 0.022       
REMARK   3   BOND LENGTHS OTHERS               (A):  1149 ; 0.001 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  2434 ; 1.477 ; 2.263       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  2792 ; 0.883 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   208 ; 5.275 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    79 ;30.598 ;24.177       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   289 ;11.715 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    12 ;18.649 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   219 ; 0.090 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1927 ; 0.008 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   317 ; 0.001 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):    52 ; 0.219 ; 0.200       
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):   917 ; 1.499 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):   373 ; 0.405 ; 1.500       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1494 ; 2.486 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  1272 ; 1.109 ; 2.000       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):   825 ; 3.416 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):   776 ; 0.723 ; 3.000       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):   921 ; 4.906 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  1520 ; 2.682 ; 4.500       
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):  2891 ; 1.270 ; 3.000       
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: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 3LF5 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 26-JAN-10.                  
REMARK 100 THE DEPOSITION ID IS D_1000057200.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 21-NOV-09                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6.2                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 17-BM                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0000                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 210R                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XSCALE                             
REMARK 200  DATA SCALING SOFTWARE          : XSCALE                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 48981                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.250                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.0                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : 0.05800                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 13.0200                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.25                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.28                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 93.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.72400                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.900                              
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: PDB ENTRY 1EUE                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 44.41                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.21                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 2M AMMONIUM SULFATE, 0.1M NA/K           
REMARK 280  PHOSPHATE, 0.2M LITHIUM SULFATE, PH 6.2, VAPOR DIFFUSION,           
REMARK 280  TEMPERATURE 277K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y+1/2,-Z                                             
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       28.18500            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2, 3                                                 
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
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 350                                                                      
REMARK 350 BIOMOLECULE: 3                                                       
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: B                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A    50                                                      
REMARK 465     MET B    50                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     ARG A  53    CD   NE   CZ   NH1  NH2                             
REMARK 470     LYS A 122    CD   CE   NZ                                        
REMARK 470     LYS A 132    CD   CE   NZ                                        
REMARK 470     LYS A 137    CD   CE   NZ                                        
REMARK 470     ARG B  53    CD   NE   CZ   NH1  NH2                             
REMARK 470     LYS B 122    CE   NZ                                             
REMARK 470     LYS B 132    CE   NZ                                             
REMARK 470     LYS B 137    CE   NZ                                             
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   NH1  ARG B   128     O    HOH B    37              2.06            
REMARK 500   OD1  ASN A    81     O    HOH A   144              2.18            
REMARK 500   O    HOH A   144     O    HOH A   175              2.18            
REMARK 500   ND2  ASN B    81     O    HOH B   139              2.19            
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    HIS A  65       67.11   -100.69                                   
REMARK 500    ASP A  70       77.95   -153.96                                   
REMARK 500    HIS A 112       73.08   -161.87                                   
REMARK 500    ASP B  70       73.28   -153.54                                   
REMARK 500    HIS B 112       73.81   -164.84                                   
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                             HEM A   1  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  89   NE2                                                    
REMARK 620 2 HEM A   1   NA   93.0                                              
REMARK 620 3 HEM A   1   NB   92.7  94.7                                        
REMARK 620 4 HEM A   1   NC   92.2 172.7  90.1                                  
REMARK 620 5 HEM A   1   ND   92.7  87.5 174.0  87.1                            
REMARK 620 6 HIS A 112   NE2 174.1  90.2  91.9  84.2  82.5                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             HEM A   1  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A  89   NE2                                                    
REMARK 620 2 HEM A   1   NA   87.9                                              
REMARK 620 3 HEM A   1   NB   86.6  89.2                                        
REMARK 620 4 HEM A   1   NC   91.4 178.4  89.3                                  
REMARK 620 5 HEM A   1   ND   93.1  88.9 178.1  92.6                            
REMARK 620 6 HIS A 112   NE2 178.5  91.4  92.0  89.3  88.2                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             HEM B   2  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS B  89   NE2                                                    
REMARK 620 2 HEM B   2   NA   92.8                                              
REMARK 620 3 HEM B   2   NB   94.3  89.4                                        
REMARK 620 4 HEM B   2   NC   86.7 179.3  90.0                                  
REMARK 620 5 HEM B   2   ND   86.0  91.5 179.0  89.0                            
REMARK 620 6 HIS B 112   NE2 177.9  87.7  87.8  92.8  91.9                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             HEM B   2  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS B  89   NE2                                                    
REMARK 620 2 HEM B   2   NA   89.9                                              
REMARK 620 3 HEM B   2   NB   89.1  84.3                                        
REMARK 620 4 HEM B   2   NC   86.7 171.1  87.4                                  
REMARK 620 5 HEM B   2   ND   88.3  93.8 176.8  94.3                            
REMARK 620 6 HIS B 112   NE2 173.9  87.3  85.2  95.4  97.3                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 1                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 138                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 2                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 138                 
DBREF  3LF5 A   51   137  UNP    Q7L1T6   NB5R4_HUMAN     57    143             
DBREF  3LF5 B   51   137  UNP    Q7L1T6   NB5R4_HUMAN     57    143             
SEQADV 3LF5 MET A   50  UNP  Q7L1T6              INITIATING METHIONINE          
SEQADV 3LF5 MET B   50  UNP  Q7L1T6              INITIATING METHIONINE          
SEQRES   1 A   88  MET LYS GLY ARG LEU ILE GLU VAL THR GLU GLU GLU LEU          
SEQRES   2 A   88  LYS LYS HIS ASN LYS LYS ASP ASP CYS TRP ILE CYS ILE          
SEQRES   3 A   88  ARG GLY PHE VAL TYR ASN VAL SER PRO TYR MET GLU TYR          
SEQRES   4 A   88  HIS PRO GLY GLY GLU ASP GLU LEU MET ARG ALA ALA GLY          
SEQRES   5 A   88  SER ASP GLY THR GLU LEU PHE ASP GLN VAL HIS ARG TRP          
SEQRES   6 A   88  VAL ASN TYR GLU SER MET LEU LYS GLU CYS LEU VAL GLY          
SEQRES   7 A   88  ARG MET ALA ILE LYS PRO ALA VAL LEU LYS                      
SEQRES   1 B   88  MET LYS GLY ARG LEU ILE GLU VAL THR GLU GLU GLU LEU          
SEQRES   2 B   88  LYS LYS HIS ASN LYS LYS ASP ASP CYS TRP ILE CYS ILE          
SEQRES   3 B   88  ARG GLY PHE VAL TYR ASN VAL SER PRO TYR MET GLU TYR          
SEQRES   4 B   88  HIS PRO GLY GLY GLU ASP GLU LEU MET ARG ALA ALA GLY          
SEQRES   5 B   88  SER ASP GLY THR GLU LEU PHE ASP GLN VAL HIS ARG TRP          
SEQRES   6 B   88  VAL ASN TYR GLU SER MET LEU LYS GLU CYS LEU VAL GLY          
SEQRES   7 B   88  ARG MET ALA ILE LYS PRO ALA VAL LEU LYS                      
HET    HEM  A   1      86                                                       
HET    SO4  A 138       5                                                       
HET    HEM  B   2      86                                                       
HET    SO4  B 138       5                                                       
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM     SO4 SULFATE ION                                                      
HETSYN     HEM HEME                                                             
FORMUL   3  HEM    2(C34 H32 FE N4 O4)                                          
FORMUL   4  SO4    2(O4 S 2-)                                                   
FORMUL   7  HOH   *145(H2 O)                                                    
HELIX    1   1 THR A   58  HIS A   65  1                                   8    
HELIX    2   2 SER A   83  MET A   86  5                                   4    
HELIX    3   3 GLY A   92  ARG A   98  1                                   7    
HELIX    4   4 GLY A  104  ARG A  113  1                                  10    
HELIX    5   5 ASN A  116  LEU A  121  1                                   6    
HELIX    6   6 LYS A  132  LYS A  137  5                                   6    
HELIX    7   7 THR B   58  HIS B   65  1                                   8    
HELIX    8   8 SER B   83  MET B   86  5                                   4    
HELIX    9   9 GLY B   92  ARG B   98  1                                   7    
HELIX   10  10 GLY B  104  ARG B  113  1                                  10    
HELIX   11  11 ASN B  116  LEU B  121  1                                   6    
HELIX   12  12 LYS B  132  LYS B  137  5                                   6    
SHEET    1   A 5 ILE A  55  VAL A  57  0                                        
SHEET    2   A 5 LEU A 125  MET A 129  1  O  ARG A 128   N  VAL A  57           
SHEET    3   A 5 PHE A  78  ASN A  81 -1  N  VAL A  79   O  VAL A 126           
SHEET    4   A 5 ASP A  70  ILE A  75 -1  N  ILE A  75   O  PHE A  78           
SHEET    5   A 5 ASN A  66  LYS A  67 -1  N  LYS A  67   O  ASP A  70           
SHEET    1   B 5 ILE A  55  VAL A  57  0                                        
SHEET    2   B 5 LEU A 125  MET A 129  1  O  ARG A 128   N  VAL A  57           
SHEET    3   B 5 PHE A  78  ASN A  81 -1  N  VAL A  79   O  VAL A 126           
SHEET    4   B 5 ASP A  70  ILE A  75 -1  N  ILE A  75   O  PHE A  78           
SHEET    5   B 5 SER A 102  ASP A 103  1  O  SER A 102   N  CYS A  74           
SHEET    1   C 5 ILE B  55  VAL B  57  0                                        
SHEET    2   C 5 LEU B 125  MET B 129  1  O  ARG B 128   N  VAL B  57           
SHEET    3   C 5 PHE B  78  ASN B  81 -1  N  VAL B  79   O  VAL B 126           
SHEET    4   C 5 ASP B  70  ILE B  75 -1  N  ILE B  75   O  PHE B  78           
SHEET    5   C 5 ASN B  66  LYS B  67 -1  N  LYS B  67   O  ASP B  70           
SHEET    1   D 5 ILE B  55  VAL B  57  0                                        
SHEET    2   D 5 LEU B 125  MET B 129  1  O  ARG B 128   N  VAL B  57           
SHEET    3   D 5 PHE B  78  ASN B  81 -1  N  VAL B  79   O  VAL B 126           
SHEET    4   D 5 ASP B  70  ILE B  75 -1  N  ILE B  75   O  PHE B  78           
SHEET    5   D 5 SER B 102  ASP B 103  1  O  SER B 102   N  CYS B  74           
LINK        FE  BHEM A   1                 NE2 HIS A  89     1555   1555  1.98  
LINK        FE  AHEM A   1                 NE2 HIS A  89     1555   1555  2.08  
LINK        FE  AHEM A   1                 NE2 HIS A 112     1555   1555  2.00  
LINK        FE  BHEM A   1                 NE2 HIS A 112     1555   1555  2.11  
LINK        FE  AHEM B   2                 NE2 HIS B  89     1555   1555  2.02  
LINK        FE  BHEM B   2                 NE2 HIS B  89     1555   1555  2.07  
LINK        FE  BHEM B   2                 NE2 HIS B 112     1555   1555  2.02  
LINK        FE  AHEM B   2                 NE2 HIS B 112     1555   1555  2.06  
SITE     1 AC1 19 HOH A  29  TYR A  85  HIS A  89  PRO A  90                    
SITE     2 AC1 19 GLY A  91  GLU A  95  LEU A  96  GLY A 104                    
SITE     3 AC1 19 PHE A 108  VAL A 111  HIS A 112  VAL A 115                    
SITE     4 AC1 19 TYR A 117  LEU A 121  HOH A 152  HOH A 156                    
SITE     5 AC1 19 HOH A 165  HOH A 173  LYS B  51                               
SITE     1 AC2  4 HOH A  10  GLY A  92  GLU A  93  ASP A  94                    
SITE     1 AC3 16 LYS A  51  TYR B  85  HIS B  89  PRO B  90                    
SITE     2 AC3 16 GLY B  91  GLU B  95  LEU B  96  LEU B 107                    
SITE     3 AC3 16 VAL B 111  HIS B 112  VAL B 115  TYR B 117                    
SITE     4 AC3 16 MET B 120  LEU B 121  HOH B 167  HOH B 176                    
SITE     1 AC4  4 HOH B  14  GLY B  92  GLU B  93  ASP B  94                    
CRYST1   38.480   56.370   42.560  90.00 100.67  90.00 P 1 21 1      4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.025988  0.000000  0.004897        0.00000                         
SCALE2      0.000000  0.017740  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.023910        0.00000