HEADER OXYGEN STORAGE/TRANSPORT 06-FEB-03 1NWN TITLE CRYSTALS OF CO-HBI IN WHICH THE STRUCTURE WAS CONVERTED TO ITS TITLE 2 UNLIGATED STATE, AND THEN CONVERTED BACK TO ITS ORIGINAL CO-LIGATED TITLE 3 STATE. COMPND MOL_ID: 1; COMPND 2 MOLECULE: GLOBIN I; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SCAPHARCA INAEQUIVALVIS; SOURCE 3 ORGANISM_COMMON: ARK CLAM; SOURCE 4 ORGANISM_TAXID: 6561; SOURCE 5 GENE: HBI; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: W3110LACIQL8; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PCS-26 KEYWDS INVERTEBRATE, HEMOGLOBIN, ALLOSTERY, COOPERATIVE, OXYGEN-BINDING, KEYWDS 2 OXYGEN TRANSPORT, HEME PROTEIN, OXYGEN STORAGE-TRANSPORT COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR J.E.KNAPP,W.E.ROYER JR. REVDAT 4 16-AUG-23 1NWN 1 REMARK LINK REVDAT 3 11-OCT-17 1NWN 1 REMARK REVDAT 2 24-FEB-09 1NWN 1 VERSN REVDAT 1 26-AUG-03 1NWN 0 JRNL AUTH J.E.KNAPP,W.E.ROYER JR. JRNL TITL LIGAND-LINKED STRUCTURAL TRANSITIONS IN CRYSTALS OF A JRNL TITL 2 COOPERATIVE DIMERIC HEMOGLOBIN. JRNL REF BIOCHEMISTRY V. 42 4640 2003 JRNL REFN ISSN 0006-2960 JRNL PMID 12705827 JRNL DOI 10.1021/BI027136P REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.E.ROYER JR. REMARK 1 TITL HIGH RESOLUTION CRYSTALLOGRAPHIC ANALYSIS OF A CO-OPERATIVE REMARK 1 TITL 2 DIMERIC HEMOGLOBIN REMARK 1 REF J.MOL.BIOL. V. 235 657 1994 REMARK 1 REFN ISSN 0022-2836 REMARK 2 REMARK 2 RESOLUTION. 2.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 37.79 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 86.1 REMARK 3 NUMBER OF REFLECTIONS : 6123 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.222 REMARK 3 FREE R VALUE : 0.248 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.600 REMARK 3 FREE R VALUE TEST SET COUNT : 343 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.013 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 10 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.80 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.90 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 75.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 505 REMARK 3 BIN R VALUE (WORKING SET) : 0.3190 REMARK 3 BIN FREE R VALUE : 0.4020 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.90 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 26 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.079 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2232 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 90 REMARK 3 SOLVENT ATOMS : 25 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 9.10 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 47.70 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.02000 REMARK 3 B22 (A**2) : 7.34000 REMARK 3 B33 (A**2) : -7.36000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 1.76000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.35 REMARK 3 ESD FROM SIGMAA (A) : 0.47 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.40 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.51 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.011 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 18.90 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.410 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : GROUP REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.34 REMARK 3 BSOL : 45.81 REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : PARAM19X.HEME REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : TOPH19X.HEME REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1NWN COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 24-FEB-03. REMARK 100 THE DEPOSITION ID IS D_1000018290. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 05-SEP-01; 14-SEP-01 REMARK 200 TEMPERATURE (KELVIN) : 298; 298 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 2 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N; N REMARK 200 RADIATION SOURCE : ROTATING ANODE; ROTATING ANODE REMARK 200 BEAMLINE : NULL; NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU RU200; RIGAKU RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M; M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418; 1.5418 REMARK 200 MONOCHROMATOR : YALE MIRRORS; YALE MIRRORS REMARK 200 OPTICS : YALE MIRRORS; YALE MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE; IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IIC; RIGAKU RAXIS REMARK 200 IIC REMARK 200 INTENSITY-INTEGRATION SOFTWARE : R-AXIS REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 6301 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.800 REMARK 200 RESOLUTION RANGE LOW (A) : 40.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 85.6 REMARK 200 DATA REDUNDANCY : 2.400 REMARK 200 R MERGE (I) : 0.09600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 9.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.80 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.90 REMARK 200 COMPLETENESS FOR SHELL (%) : 75.9 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.26100 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH; SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: PDB ENTRY 3SDH REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 42.71 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.16 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: SODIUM AND POTASSIUM PHOSPHATE, PH REMARK 280 7.5, SMALL TUBES, TEMPERATURE 296K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 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 46.31000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 21.75500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 46.31000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 21.75500 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 300 REMARK: THE AB DIMER IS THE BIOLOGICAL UNIT REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 4890 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 12130 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -54.0 KCAL/MOL 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 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 PRO A 1 REMARK 465 PRO B 1 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 ASP A 28 70.78 -152.76 REMARK 500 PHE A 51 30.99 -97.14 REMARK 500 ASP B 28 70.15 -153.66 REMARK 500 PHE B 51 31.56 -97.53 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 147 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 101 NE2 REMARK 620 2 HEM A 147 NA 88.6 REMARK 620 3 HEM A 147 NB 91.1 90.1 REMARK 620 4 HEM A 147 NC 94.4 176.9 89.2 REMARK 620 5 HEM A 147 ND 89.2 89.7 179.6 91.1 REMARK 620 6 CMO A 148 C 177.9 90.2 90.6 86.8 89.0 REMARK 620 7 CMO A 148 O 177.8 92.4 90.9 84.6 88.8 2.2 REMARK 620 N 1 2 3 4 5 6 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 101 NE2 REMARK 620 2 HEM B 147 NA 88.7 REMARK 620 3 HEM B 147 NB 89.2 89.4 REMARK 620 4 HEM B 147 NC 91.6 177.8 88.5 REMARK 620 5 HEM B 147 ND 89.5 90.5 178.7 91.6 REMARK 620 6 CMO B 148 C 179.9 91.4 90.8 88.2 90.6 REMARK 620 7 CMO B 148 O 178.0 93.3 90.9 86.4 90.5 1.8 REMARK 620 N 1 2 3 4 5 6 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 147 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 147 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CMO A 148 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CMO B 148 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3SDH RELATED DB: PDB REMARK 900 CO-LIGATED HBI WILD TYPE REMARK 900 RELATED ID: 4SDH RELATED DB: PDB REMARK 900 UNLIGATED HBI WILD TYPE REMARK 900 RELATED ID: 1NWI RELATED DB: PDB REMARK 900 CO-HBI WILD TYPE TRANSFORMED TO ITS UNLIGATED STATE. DBREF 1NWN A 1 146 UNP P02213 GLB1_SCAIN 1 146 DBREF 1NWN B 1 146 UNP P02213 GLB1_SCAIN 1 146 SEQRES 1 A 146 PRO SER VAL TYR ASP ALA ALA ALA GLN LEU THR ALA ASP SEQRES 2 A 146 VAL LYS LYS ASP LEU ARG ASP SER TRP LYS VAL ILE GLY SEQRES 3 A 146 SER ASP LYS LYS GLY ASN GLY VAL ALA LEU MET THR THR SEQRES 4 A 146 LEU PHE ALA ASP ASN GLN GLU THR ILE GLY TYR PHE LYS SEQRES 5 A 146 ARG LEU GLY ASN VAL SER GLN GLY MET ALA ASN ASP LYS SEQRES 6 A 146 LEU ARG GLY HIS SER ILE THR LEU MET TYR ALA LEU GLN SEQRES 7 A 146 ASN PHE ILE ASP GLN LEU ASP ASN PRO ASP ASP LEU VAL SEQRES 8 A 146 CYS VAL VAL GLU LYS PHE ALA VAL ASN HIS ILE THR ARG SEQRES 9 A 146 LYS ILE SER ALA ALA GLU PHE GLY LYS ILE ASN GLY PRO SEQRES 10 A 146 ILE LYS LYS VAL LEU ALA SER LYS ASN PHE GLY ASP LYS SEQRES 11 A 146 TYR ALA ASN ALA TRP ALA LYS LEU VAL ALA VAL VAL GLN SEQRES 12 A 146 ALA ALA LEU SEQRES 1 B 146 PRO SER VAL TYR ASP ALA ALA ALA GLN LEU THR ALA ASP SEQRES 2 B 146 VAL LYS LYS ASP LEU ARG ASP SER TRP LYS VAL ILE GLY SEQRES 3 B 146 SER ASP LYS LYS GLY ASN GLY VAL ALA LEU MET THR THR SEQRES 4 B 146 LEU PHE ALA ASP ASN GLN GLU THR ILE GLY TYR PHE LYS SEQRES 5 B 146 ARG LEU GLY ASN VAL SER GLN GLY MET ALA ASN ASP LYS SEQRES 6 B 146 LEU ARG GLY HIS SER ILE THR LEU MET TYR ALA LEU GLN SEQRES 7 B 146 ASN PHE ILE ASP GLN LEU ASP ASN PRO ASP ASP LEU VAL SEQRES 8 B 146 CYS VAL VAL GLU LYS PHE ALA VAL ASN HIS ILE THR ARG SEQRES 9 B 146 LYS ILE SER ALA ALA GLU PHE GLY LYS ILE ASN GLY PRO SEQRES 10 B 146 ILE LYS LYS VAL LEU ALA SER LYS ASN PHE GLY ASP LYS SEQRES 11 B 146 TYR ALA ASN ALA TRP ALA LYS LEU VAL ALA VAL VAL GLN SEQRES 12 B 146 ALA ALA LEU HET HEM A 147 43 HET CMO A 148 2 HET HEM B 147 43 HET CMO B 148 2 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM CMO CARBON MONOXIDE HETSYN HEM HEME FORMUL 3 HEM 2(C34 H32 FE N4 O4) FORMUL 4 CMO 2(C O) FORMUL 7 HOH *25(H2 O) HELIX 1 1 SER A 2 GLN A 9 1 8 HELIX 2 2 THR A 11 GLY A 26 1 16 HELIX 3 3 ASP A 28 ASN A 44 1 17 HELIX 4 4 GLN A 45 GLY A 55 5 11 HELIX 5 5 ASN A 56 ALA A 62 5 7 HELIX 6 6 ASN A 63 GLN A 83 1 21 HELIX 7 7 ASN A 86 THR A 103 1 18 HELIX 8 8 SER A 107 GLY A 112 1 6 HELIX 9 9 ILE A 114 SER A 124 1 11 HELIX 10 10 GLY A 128 ALA A 144 1 17 HELIX 11 11 SER B 2 GLN B 9 1 8 HELIX 12 12 THR B 11 GLY B 26 1 16 HELIX 13 13 ASP B 28 ASN B 44 1 17 HELIX 14 14 GLN B 45 GLY B 55 5 11 HELIX 15 15 ASN B 56 ALA B 62 5 7 HELIX 16 16 ASN B 63 GLN B 83 1 21 HELIX 17 17 ASN B 86 THR B 103 1 18 HELIX 18 18 SER B 107 GLY B 112 1 6 HELIX 19 19 ILE B 114 SER B 124 1 11 HELIX 20 20 GLY B 128 ALA B 144 1 17 LINK NE2 HIS A 101 FE HEM A 147 1555 1555 2.04 LINK FE HEM A 147 C CMO A 148 1555 1555 1.86 LINK FE HEM A 147 O CMO A 148 1555 1555 3.08 LINK NE2 HIS B 101 FE HEM B 147 1555 1555 2.09 LINK FE HEM B 147 C CMO B 148 1555 1555 1.82 LINK FE HEM B 147 O CMO B 148 1555 1555 3.03 SITE 1 AC1 14 TYR A 50 PHE A 51 ARG A 53 LEU A 73 SITE 2 AC1 14 PHE A 97 ASN A 100 HIS A 101 ARG A 104 SITE 3 AC1 14 GLU A 110 PHE A 111 CMO A 148 LYS B 96 SITE 4 AC1 14 ASN B 100 HEM B 147 SITE 1 AC2 17 LYS A 96 ASN A 100 HEM A 147 TYR B 50 SITE 2 AC2 17 PHE B 51 ARG B 53 LEU B 73 PHE B 97 SITE 3 AC2 17 ASN B 100 HIS B 101 ARG B 104 ILE B 106 SITE 4 AC2 17 GLU B 110 PHE B 111 CMO B 148 HOH B 159 SITE 5 AC2 17 HOH B 162 SITE 1 AC3 5 MET A 37 PHE A 51 HIS A 69 LEU A 73 SITE 2 AC3 5 HEM A 147 SITE 1 AC4 5 MET B 37 PHE B 51 HIS B 69 LEU B 73 SITE 2 AC4 5 HEM B 147 CRYST1 92.620 43.510 83.110 90.00 121.88 90.00 C 1 2 1 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 0.010797 0.000000 0.006715 0.00000 SCALE2 0.000000 0.022983 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014170 0.00000