HEADER    OXYGEN STORAGE/TRANSPORT                04-DEC-03   1RQ4              
TITLE     CRYSTALLOGRAPHIC ANALYSIS OF THE INTERACTION OF NITRIC OXIDE WITH     
TITLE    2 QUATERNARY-T HUMAN HEMOGLOBIN, HEMOGLOBIN EXPOSED TO NO UNDER AEROBIC
TITLE    3 CONDITIONS                                                           
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: HEMOGLOBIN ALPHA CHAIN;                                    
COMPND   3 CHAIN: A, C;                                                         
COMPND   4 MOL_ID: 2;                                                           
COMPND   5 MOLECULE: HEMOGLOBIN BETA CHAIN;                                     
COMPND   6 CHAIN: B, D                                                          
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 TISSUE: BLOOD;                                                       
SOURCE   6 MOL_ID: 2;                                                           
SOURCE   7 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   8 ORGANISM_COMMON: HUMAN;                                              
SOURCE   9 ORGANISM_TAXID: 9606;                                                
SOURCE  10 TISSUE: BLOOD                                                        
KEYWDS    GLOBIN, OXYGEN STORAGE-TRANSPORT COMPLEX                              
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    N.L.CHAN,J.S.KAVANAUGH,P.H.ROGERS,A.ARNONE                            
REVDAT   6   16-OCT-24 1RQ4    1       REMARK                                   
REVDAT   5   15-NOV-23 1RQ4    1       REMARK                                   
REVDAT   4   23-AUG-23 1RQ4    1       REMARK SEQADV LINK                       
REVDAT   3   24-FEB-09 1RQ4    1       VERSN                                    
REVDAT   2   13-JAN-04 1RQ4    1       JRNL                                     
REVDAT   1   23-DEC-03 1RQ4    0                                                
JRNL        AUTH   N.L.CHAN,J.S.KAVANAUGH,P.H.ROGERS,A.ARNONE                   
JRNL        TITL   CRYSTALLOGRAPHIC ANALYSIS OF THE INTERACTION OF NITRIC OXIDE 
JRNL        TITL 2 WITH QUATERNARY-T HUMAN HEMOGLOBIN.                          
JRNL        REF    BIOCHEMISTRY                  V.  43   118 2004              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   14705937                                                     
JRNL        DOI    10.1021/BI0497603                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.11 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.0                                           
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.11                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 95.6                           
REMARK   3   NUMBER OF REFLECTIONS             : 33380                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : MATCHED TO 1RQ3 DATA            
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.201                           
REMARK   3   R VALUE            (WORKING SET) : 0.197                           
REMARK   3   FREE R VALUE                     : 0.241                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.400                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 3451                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.11                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.15                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 1576                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3120                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 24                           
REMARK   3   BIN FREE R VALUE                    : 0.2510                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4386                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 180                                     
REMARK   3   SOLVENT ATOMS            : 164                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 24.49                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -1.77000                                             
REMARK   3    B22 (A**2) : 3.03000                                              
REMARK   3    B33 (A**2) : -1.26000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.249         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.200         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.227         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 8.731         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.946                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.918                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  4766 ; 0.021 ; 0.039       
REMARK   3   BOND LENGTHS OTHERS               (A):  4178 ; 0.001 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  6436 ; 1.505 ; 2.057       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  9698 ; 0.767 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   566 ; 3.395 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   758 ;17.650 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   700 ; 0.085 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  5164 ; 0.005 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   890 ; 0.003 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  1204 ; 0.244 ; 0.300       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  3803 ; 0.197 ; 0.300       
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):   200 ; 0.225 ; 0.500       
REMARK   3   H-BOND (X...Y) OTHERS             (A):     4 ; 0.264 ; 0.500       
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):     8 ; 0.111 ; 0.300       
REMARK   3   SYMMETRY VDW OTHERS               (A):    11 ; 0.142 ; 0.300       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):     9 ; 0.207 ; 0.500       
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):  2898 ; 0.684 ; 1.500       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  4558 ; 1.242 ; 2.000       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1860 ; 1.960 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1878 ; 3.123 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : BABINET MODEL WITH 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 1RQ4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-DEC-03.                  
REMARK 100 THE DEPOSITION ID IS D_1000020942.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 08-FEB-99                          
REMARK 200  TEMPERATURE           (KELVIN) : 298.0                              
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU RU200                       
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : GRAPHITE                           
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : AREA DETECTOR                      
REMARK 200  DETECTOR MANUFACTURER          : SDMS                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : SDMS                               
REMARK 200  DATA SCALING SOFTWARE          : SDMS                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 36755                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.110                              
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.9                               
REMARK 200  DATA REDUNDANCY                : 6.300                              
REMARK 200  R MERGE                    (I) : 0.09400                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 8.1000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.11                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.27                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 87.1                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.27200                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: X-PLOR                                                
REMARK 200 STARTING MODEL: PDB ENTRY 1RQ3                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 52.67                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.60                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.0                                   
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       48.60000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       50.20000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       48.60000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       50.20000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 11940 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 23690 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -121.0 KCAL/MOL                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D                            
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 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   N    LEU A    48     O    HOH A   290              1.78            
REMARK 500   O    ALA A   115     O    HOH A   340              1.86            
REMARK 500   N    SER A    49     O    HOH A   290              1.92            
REMARK 500   O    SER A    35     O    HOH A   382              2.13            
REMARK 500   OE2  GLU A   116     O    HOH A   352              2.16            
REMARK 500   NH1  ARG B   104     O    HOH B   248              2.17            
REMARK 500   OG1  THR A     8     O    HOH A   216              2.17            
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    ASP A  64   CB  -  CG  -  OD2 ANGL. DEV. =   5.6 DEGREES          
REMARK 500    ASP A 126   CB  -  CG  -  OD2 ANGL. DEV. =   6.1 DEGREES          
REMARK 500    ASP B  79   CB  -  CG  -  OD2 ANGL. DEV. =   5.7 DEGREES          
REMARK 500    CSO B  93   O   -  C   -  N   ANGL. DEV. = -11.6 DEGREES          
REMARK 500    ASP B  94   CB  -  CG  -  OD2 ANGL. DEV. =   5.4 DEGREES          
REMARK 500    ASP B  99   CB  -  CG  -  OD2 ANGL. DEV. =   6.1 DEGREES          
REMARK 500    ASP D  73   CB  -  CG  -  OD2 ANGL. DEV. =   6.5 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  19       33.76    -84.09                                   
REMARK 500    ASP A  75       44.94   -147.97                                   
REMARK 500    LYS A  90      -61.98   -121.61                                   
REMARK 500    HIS B   2      106.83    -49.99                                   
REMARK 500    ASN B  80       58.75   -150.08                                   
REMARK 500    VAL C  17      -53.09    -27.49                                   
REMARK 500    ASP C  75       40.00   -143.43                                   
REMARK 500    HIS D   2       90.52    -54.02                                   
REMARK 500    LEU D  48       24.43   -142.39                                   
REMARK 500    ASN D  80       57.26   -142.23                                   
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    HIS B  92         14.12                                           
REMARK 500    CSO B  93        -16.14                                           
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 142  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  NO A 150   N                                                      
REMARK 620 2 HEM A 142   NA   96.6                                              
REMARK 620 3 HEM A 142   NB   90.9  84.4                                        
REMARK 620 4 HEM A 142   NC   95.1 167.5  91.0                                  
REMARK 620 5 HEM A 142   ND   99.5  91.5 169.2  90.9                            
REMARK 620 6  NO A 150   O    21.3 116.6  99.6  75.6  91.2                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             HEM B 147  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS B  92   NE2                                                    
REMARK 620 2 HEM B 147   NA   90.2                                              
REMARK 620 3 HEM B 147   NB   89.3  85.6                                        
REMARK 620 4 HEM B 147   NC   91.1 177.4  92.1                                  
REMARK 620 5 HEM B 147   ND   92.4  90.3 175.6  91.9                            
REMARK 620 6  NO B 150   N   178.9  90.3  89.7  88.4  88.6                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             HEM C 142  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1  NO C 150   N                                                      
REMARK 620 2 HEM C 142   NA  101.0                                              
REMARK 620 3 HEM C 142   NB   97.3  86.8                                        
REMARK 620 4 HEM C 142   NC   89.6 169.1  88.9                                  
REMARK 620 5 HEM C 142   ND   92.5  94.8 169.6  87.7                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                             HEM D 147  FE                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS D  92   NE2                                                    
REMARK 620 2 HEM D 147   NA   91.3                                              
REMARK 620 3 HEM D 147   NB   94.2  85.8                                        
REMARK 620 4 HEM D 147   NC   94.2 174.4  92.9                                  
REMARK 620 5 HEM D 147   ND   93.2  88.4 170.7  92.1                            
REMARK 620 6  NO D 150   N   169.9  81.2  78.6  93.3  93.3                      
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 142                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO A 150                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 147                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO B 150                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM C 142                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO C 150                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM D 147                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO D 150                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1RQ3   RELATED DB: PDB                                   
REMARK 900 QUATERNARY-T DEOXYHEMOGLOBIN                                         
REMARK 900 RELATED ID: 1RPS   RELATED DB: PDB                                   
REMARK 900 QUATERNARY-T HEMOGLOBIN EXPOSED TO NO UNDER ANAEROBIC CONDITIONS     
REMARK 900 RELATED ID: 1RQA   RELATED DB: PDB                                   
REMARK 900 QUATERNARY-T BETA W37E HEMOGLOBIN EXPOSSED TO NO UNDER AEROBIC       
REMARK 900 CONDITIONS                                                           
DBREF  1RQ4 A    1   141  UNP    P69905   HBA_HUMAN        1    141             
DBREF  1RQ4 B    1   146  UNP    P68871   HBB_HUMAN        1    146             
DBREF  1RQ4 C    1   141  UNP    P69905   HBA_HUMAN        1    141             
DBREF  1RQ4 D    1   146  UNP    P68871   HBB_HUMAN        1    146             
SEQADV 1RQ4 CSO B   93  UNP  P68871    CYS    93 MODIFIED RESIDUE               
SEQADV 1RQ4 CSO D   93  UNP  P68871    CYS    93 MODIFIED RESIDUE               
SEQRES   1 A  141  VAL LEU SER PRO ALA ASP LYS THR ASN VAL LYS ALA ALA          
SEQRES   2 A  141  TRP GLY LYS VAL GLY ALA HIS ALA GLY GLU TYR GLY ALA          
SEQRES   3 A  141  GLU ALA LEU GLU ARG MET PHE LEU SER PHE PRO THR THR          
SEQRES   4 A  141  LYS THR TYR PHE PRO HIS PHE ASP LEU SER HIS GLY SER          
SEQRES   5 A  141  ALA GLN VAL LYS GLY HIS GLY LYS LYS VAL ALA ASP ALA          
SEQRES   6 A  141  LEU THR ASN ALA VAL ALA HIS VAL ASP ASP MET PRO ASN          
SEQRES   7 A  141  ALA LEU SER ALA LEU SER ASP LEU HIS ALA HIS LYS LEU          
SEQRES   8 A  141  ARG VAL ASP PRO VAL ASN PHE LYS LEU LEU SER HIS CYS          
SEQRES   9 A  141  LEU LEU VAL THR LEU ALA ALA HIS LEU PRO ALA GLU PHE          
SEQRES  10 A  141  THR PRO ALA VAL HIS ALA SER LEU ASP LYS PHE LEU ALA          
SEQRES  11 A  141  SER VAL SER THR VAL LEU THR SER LYS TYR ARG                  
SEQRES   1 B  146  VAL HIS LEU THR PRO GLU GLU LYS SER ALA VAL THR ALA          
SEQRES   2 B  146  LEU TRP GLY LYS VAL ASN VAL ASP GLU VAL GLY GLY GLU          
SEQRES   3 B  146  ALA LEU GLY ARG LEU LEU VAL VAL TYR PRO TRP THR GLN          
SEQRES   4 B  146  ARG PHE PHE GLU SER PHE GLY ASP LEU SER THR PRO ASP          
SEQRES   5 B  146  ALA VAL MET GLY ASN PRO LYS VAL LYS ALA HIS GLY LYS          
SEQRES   6 B  146  LYS VAL LEU GLY ALA PHE SER ASP GLY LEU ALA HIS LEU          
SEQRES   7 B  146  ASP ASN LEU LYS GLY THR PHE ALA THR LEU SER GLU LEU          
SEQRES   8 B  146  HIS CSO ASP LYS LEU HIS VAL ASP PRO GLU ASN PHE ARG          
SEQRES   9 B  146  LEU LEU GLY ASN VAL LEU VAL CYS VAL LEU ALA HIS HIS          
SEQRES  10 B  146  PHE GLY LYS GLU PHE THR PRO PRO VAL GLN ALA ALA TYR          
SEQRES  11 B  146  GLN LYS VAL VAL ALA GLY VAL ALA ASN ALA LEU ALA HIS          
SEQRES  12 B  146  LYS TYR HIS                                                  
SEQRES   1 C  141  VAL LEU SER PRO ALA ASP LYS THR ASN VAL LYS ALA ALA          
SEQRES   2 C  141  TRP GLY LYS VAL GLY ALA HIS ALA GLY GLU TYR GLY ALA          
SEQRES   3 C  141  GLU ALA LEU GLU ARG MET PHE LEU SER PHE PRO THR THR          
SEQRES   4 C  141  LYS THR TYR PHE PRO HIS PHE ASP LEU SER HIS GLY SER          
SEQRES   5 C  141  ALA GLN VAL LYS GLY HIS GLY LYS LYS VAL ALA ASP ALA          
SEQRES   6 C  141  LEU THR ASN ALA VAL ALA HIS VAL ASP ASP MET PRO ASN          
SEQRES   7 C  141  ALA LEU SER ALA LEU SER ASP LEU HIS ALA HIS LYS LEU          
SEQRES   8 C  141  ARG VAL ASP PRO VAL ASN PHE LYS LEU LEU SER HIS CYS          
SEQRES   9 C  141  LEU LEU VAL THR LEU ALA ALA HIS LEU PRO ALA GLU PHE          
SEQRES  10 C  141  THR PRO ALA VAL HIS ALA SER LEU ASP LYS PHE LEU ALA          
SEQRES  11 C  141  SER VAL SER THR VAL LEU THR SER LYS TYR ARG                  
SEQRES   1 D  146  VAL HIS LEU THR PRO GLU GLU LYS SER ALA VAL THR ALA          
SEQRES   2 D  146  LEU TRP GLY LYS VAL ASN VAL ASP GLU VAL GLY GLY GLU          
SEQRES   3 D  146  ALA LEU GLY ARG LEU LEU VAL VAL TYR PRO TRP THR GLN          
SEQRES   4 D  146  ARG PHE PHE GLU SER PHE GLY ASP LEU SER THR PRO ASP          
SEQRES   5 D  146  ALA VAL MET GLY ASN PRO LYS VAL LYS ALA HIS GLY LYS          
SEQRES   6 D  146  LYS VAL LEU GLY ALA PHE SER ASP GLY LEU ALA HIS LEU          
SEQRES   7 D  146  ASP ASN LEU LYS GLY THR PHE ALA THR LEU SER GLU LEU          
SEQRES   8 D  146  HIS CSO ASP LYS LEU HIS VAL ASP PRO GLU ASN PHE ARG          
SEQRES   9 D  146  LEU LEU GLY ASN VAL LEU VAL CYS VAL LEU ALA HIS HIS          
SEQRES  10 D  146  PHE GLY LYS GLU PHE THR PRO PRO VAL GLN ALA ALA TYR          
SEQRES  11 D  146  GLN LYS VAL VAL ALA GLY VAL ALA ASN ALA LEU ALA HIS          
SEQRES  12 D  146  LYS TYR HIS                                                  
MODRES 1RQ4 CSO B   93  CYS  S-HYDROXYCYSTEINE                                  
MODRES 1RQ4 CSO D   93  CYS  S-HYDROXYCYSTEINE                                  
HET    CSO  B  93       7                                                       
HET    CSO  D  93       7                                                       
HET    HEM  A 142      43                                                       
HET     NO  A 150       2                                                       
HET    HEM  B 147      43                                                       
HET     NO  B 150       2                                                       
HET    HEM  C 142      43                                                       
HET     NO  C 150       2                                                       
HET    HEM  D 147      43                                                       
HET     NO  D 150       2                                                       
HETNAM     CSO S-HYDROXYCYSTEINE                                                
HETNAM     HEM PROTOPORPHYRIN IX CONTAINING FE                                  
HETNAM      NO NITRIC OXIDE                                                     
HETSYN     HEM HEME                                                             
HETSYN      NO NITROGEN MONOXIDE                                                
FORMUL   2  CSO    2(C3 H7 N O3 S)                                              
FORMUL   5  HEM    4(C34 H32 FE N4 O4)                                          
FORMUL   6   NO    4(N O)                                                       
FORMUL  13  HOH   *164(H2 O)                                                    
HELIX    1   1 SER A    3  GLY A   18  1                                  16    
HELIX    2   2 HIS A   20  PHE A   36  1                                  17    
HELIX    3   3 PRO A   37  PHE A   43  5                                   7    
HELIX    4   4 SER A   52  HIS A   72  1                                  21    
HELIX    5   5 ASP A   75  LEU A   80  1                                   6    
HELIX    6   6 LEU A   80  LYS A   90  1                                  11    
HELIX    7   7 PRO A   95  LEU A  113  1                                  19    
HELIX    8   8 THR A  118  LEU A  136  1                                  19    
HELIX    9   9 THR B    4  GLY B   16  1                                  13    
HELIX   10  10 ASN B   19  TYR B   35  1                                  17    
HELIX   11  11 PRO B   36  GLY B   46  5                                  11    
HELIX   12  12 THR B   50  GLY B   56  1                                   7    
HELIX   13  13 ASN B   57  ALA B   76  1                                  20    
HELIX   14  14 ASN B   80  LYS B   95  1                                  16    
HELIX   15  15 PRO B  100  GLY B  119  1                                  20    
HELIX   16  16 LYS B  120  PHE B  122  5                                   3    
HELIX   17  17 THR B  123  HIS B  143  1                                  21    
HELIX   18  18 SER C    3  GLY C   18  1                                  16    
HELIX   19  19 HIS C   20  PHE C   36  1                                  17    
HELIX   20  20 PRO C   37  PHE C   43  5                                   7    
HELIX   21  21 SER C   52  HIS C   72  1                                  21    
HELIX   22  22 ASP C   75  LEU C   80  1                                   6    
HELIX   23  23 LEU C   80  LYS C   90  1                                  11    
HELIX   24  24 PRO C   95  LEU C  113  1                                  19    
HELIX   25  25 THR C  118  THR C  137  1                                  20    
HELIX   26  26 THR D    4  GLY D   16  1                                  13    
HELIX   27  27 ASN D   19  TYR D   35  1                                  17    
HELIX   28  28 PRO D   36  GLY D   46  5                                  11    
HELIX   29  29 THR D   50  ASN D   57  1                                   8    
HELIX   30  30 ASN D   57  ALA D   76  1                                  20    
HELIX   31  31 ASN D   80  PHE D   85  1                                   6    
HELIX   32  32 PHE D   85  LYS D   95  1                                  11    
HELIX   33  33 PRO D  100  GLY D  119  1                                  20    
HELIX   34  34 LYS D  120  PHE D  122  5                                   3    
HELIX   35  35 THR D  123  HIS D  143  1                                  21    
LINK         C   HIS B  92                 N   CSO B  93     1555   1555  1.31  
LINK         C   CSO B  93                 N   ASP B  94     1555   1555  1.31  
LINK         C   HIS D  92                 N   CSO D  93     1555   1555  1.31  
LINK         C   CSO D  93                 N   ASP D  94     1555   1555  1.32  
LINK        FE   HEM A 142                 N    NO A 150     1555   1555  1.72  
LINK        FE   HEM A 142                 O    NO A 150     1555   1555  2.58  
LINK         NE2 HIS B  92                FE   HEM B 147     1555   1555  2.24  
LINK        FE   HEM B 147                 N    NO B 150     1555   1555  1.77  
LINK        FE   HEM C 142                 N    NO C 150     1555   1555  1.72  
LINK         NE2 HIS D  92                FE   HEM D 147     1555   1555  2.14  
LINK        FE   HEM D 147                 N    NO D 150     1555   1555  1.75  
SITE     1 AC1 10 TYR A  42  PHE A  43  HIS A  45  HIS A  58                    
SITE     2 AC1 10 LYS A  61  LEU A  86  VAL A  93  ASN A  97                    
SITE     3 AC1 10 LEU A 101   NO A 150                                          
SITE     1 AC2  3 HIS A  58  VAL A  62  HEM A 142                               
SITE     1 AC3 15 HIS A  72  ASP A  75  PHE B  41  HIS B  63                    
SITE     2 AC3 15 HIS B  92  LEU B  96  VAL B  98  ASN B 102                    
SITE     3 AC3 15 PHE B 103  LEU B 141   NO B 150  HOH B 244                    
SITE     4 AC3 15 HOH B 262  HOH B 402  HOH B 442                               
SITE     1 AC4  3 HIS B  63  VAL B  67  HEM B 147                               
SITE     1 AC5 14 LYS B 120  TYR C  42  PHE C  43  HIS C  45                    
SITE     2 AC5 14 HIS C  58  LYS C  61  LEU C  86  HIS C  87                    
SITE     3 AC5 14 LEU C  91  VAL C  93  ASN C  97  PHE C  98                    
SITE     4 AC5 14 LEU C 101   NO C 150                                          
SITE     1 AC6  3 HIS C  58  VAL C  62  HEM C 142                               
SITE     1 AC7 11 LYS C  56  PHE D  41  PHE D  45  HIS D  63                    
SITE     2 AC7 11 VAL D  67  HIS D  92  LEU D  96  ASN D 102                    
SITE     3 AC7 11 PHE D 103  LEU D 141   NO D 150                               
SITE     1 AC8  3 HIS D  63  VAL D  67  HEM D 147                               
CRYST1   97.200  100.400   66.200  90.00  90.00  90.00 P 21 21 2     8          
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      0.010288  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.009960  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.015106        0.00000