HEADER OXIDOREDUCTASE 26-AUG-04 1WOX TITLE CRYSTAL STRUCTURE OF HEME OXYGENASE-2 FROM SYNECHOCYSTIS SP. PCC 6803 TITLE 2 IN COMPLEX WITH HEME AND NO COMPND MOL_ID: 1; COMPND 2 MOLECULE: HEME OXYGENASE 2; COMPND 3 CHAIN: A, B; COMPND 4 EC: 1.14.99.3; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SYNECHOCYSTIS SP.; SOURCE 3 ORGANISM_TAXID: 1148; SOURCE 4 STRAIN: PCC 6803; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PMW-A KEYWDS HOMO-DIMER, NO-BOUND HEME COMPLEX, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR M.SUGISHIMA,Y.HAGIWARA,X.ZHANG,T.YOSHIDA,C.T.MIGITA,K.FUKUYAMA REVDAT 4 25-OCT-23 1WOX 1 REMARK LINK REVDAT 3 13-JUL-11 1WOX 1 VERSN REVDAT 2 24-FEB-09 1WOX 1 VERSN REVDAT 1 22-MAR-05 1WOX 0 JRNL AUTH M.SUGISHIMA,Y.HAGIWARA,X.ZHANG,T.YOSHIDA,C.T.MIGITA, JRNL AUTH 2 K.FUKUYAMA JRNL TITL CRYSTAL STRUCTURE OF DIMERIC HEME OXYGENASE-2 FROM JRNL TITL 2 SYNECHOCYSTIS SP. PCC 6803 IN COMPLEX WITH HEME. JRNL REF BIOCHEMISTRY V. 44 4257 2005 JRNL REFN ISSN 0006-2960 JRNL PMID 15766254 JRNL DOI 10.1021/BI0480483 REMARK 2 REMARK 2 RESOLUTION. 2.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 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) : 2.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 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) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 33206 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) : 0.211 REMARK 3 FREE R VALUE : 0.246 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1680 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.10 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.18 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.2250 REMARK 3 BIN FREE R VALUE : 0.2550 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : 167 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3926 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 90 REMARK 3 SOLVENT ATOMS : 311 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.24 REMARK 3 ESD FROM SIGMAA (A) : 0.29 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) : 0.14 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.19 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.175 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 19.00 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.773 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL 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 : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1WOX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 31-AUG-04. REMARK 100 THE DEPOSITION ID IS D_1000023830. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 29-MAY-04 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SPRING-8 REMARK 200 BEAMLINE : BL41XU REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.046 REMARK 200 MONOCHROMATOR : SI(111) DOUBLE MONOCHROMATOR REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : SCALA, CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 33206 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.100 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.10 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.21 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP REMARK 200 STARTING MODEL: PDB ENTRY 1W0V REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 50.80 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.50 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: POTTASIUM SODIUM TARTRATE, POTTASIUM REMARK 280 PHOSPHATE, PH 7.0, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE REMARK 280 293K 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 36.88000 REMARK 290 SMTRY3 2 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 BIOLOGICAL ASSEMBLY IS A DIMER IN THE ASYMMMETRIC 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: 6030 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 19310 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -65.0 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 MET A 1 REMARK 465 ALA A 236 REMARK 465 ARG A 237 REMARK 465 SER A 238 REMARK 465 THR A 239 REMARK 465 ALA A 240 REMARK 465 MET B 1 REMARK 465 ALA B 236 REMARK 465 ARG B 237 REMARK 465 SER B 238 REMARK 465 THR B 239 REMARK 465 ALA B 240 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 GLN A 96 CG CD OE1 NE2 REMARK 470 GLN B 96 CG CD OE1 NE2 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 SER A 132 -104.59 -119.97 REMARK 500 HIS A 242 -14.42 -172.66 REMARK 500 MET A 247 163.57 178.42 REMARK 500 SER B 132 -107.24 -119.36 REMARK 500 GLU B 149 136.09 -37.84 REMARK 500 HIS B 242 -18.02 -168.47 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 300 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 16 NE2 REMARK 620 2 HEM A 300 NA 88.7 REMARK 620 3 HEM A 300 NB 90.1 89.8 REMARK 620 4 HEM A 300 NC 90.6 178.9 89.4 REMARK 620 5 HEM A 300 ND 89.2 90.8 179.1 90.1 REMARK 620 6 NO A 301 N 171.2 90.9 81.1 89.6 99.6 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM B 300 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 16 NE2 REMARK 620 2 HEM B 300 NA 88.2 REMARK 620 3 HEM B 300 NB 93.0 89.5 REMARK 620 4 HEM B 300 NC 91.0 178.6 89.4 REMARK 620 5 HEM B 300 ND 88.0 90.7 178.9 90.4 REMARK 620 6 NO B 301 N 175.2 93.3 82.5 87.4 96.5 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 300 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 300 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NO B 301 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1WOV RELATED DB: PDB REMARK 900 THE SAME PROTEIN COMPLEXED WITH HEME IN FERRIC FORM REMARK 900 RELATED ID: 1WOW RELATED DB: PDB REMARK 900 THE SAME PROTEIN COMPLEXED WITH HEME IN FERROUS FORM DBREF 1WOX A 1 250 UNP P74133 HO2_SYNY3 1 250 DBREF 1WOX B 1 250 UNP P74133 HO2_SYNY3 1 250 SEQRES 1 A 250 MET THR ASN LEU ALA GLN LYS LEU ARG TYR GLY THR GLN SEQRES 2 A 250 GLN SER HIS THR LEU ALA GLU ASN THR ALA TYR MET LYS SEQRES 3 A 250 CYS PHE LEU LYS GLY ILE VAL GLU ARG GLU PRO PHE ARG SEQRES 4 A 250 GLN LEU LEU ALA ASN LEU TYR TYR LEU TYR SER ALA LEU SEQRES 5 A 250 GLU ALA ALA LEU ARG GLN HIS ARG ASP ASN GLU ILE ILE SEQRES 6 A 250 SER ALA ILE TYR PHE PRO GLU LEU ASN ARG THR ASP LYS SEQRES 7 A 250 LEU ALA GLU ASP LEU THR TYR TYR TYR GLY PRO ASN TRP SEQRES 8 A 250 GLN GLN ILE ILE GLN PRO THR PRO CYS ALA LYS ILE TYR SEQRES 9 A 250 VAL ASP ARG LEU LYS THR ILE ALA ALA SER GLU PRO GLU SEQRES 10 A 250 LEU LEU ILE ALA HIS CYS TYR THR ARG TYR LEU GLY ASP SEQRES 11 A 250 LEU SER GLY GLY GLN SER LEU LYS ASN ILE ILE ARG SER SEQRES 12 A 250 ALA LEU GLN LEU PRO GLU GLY GLU GLY THR ALA MET TYR SEQRES 13 A 250 GLU PHE ASP SER LEU PRO THR PRO GLY ASP ARG ARG GLN SEQRES 14 A 250 PHE LYS GLU ILE TYR ARG ASP VAL LEU ASN SER LEU PRO SEQRES 15 A 250 LEU ASP GLU ALA THR ILE ASN ARG ILE VAL GLU GLU ALA SEQRES 16 A 250 ASN TYR ALA PHE SER LEU ASN ARG GLU VAL MET HIS ASP SEQRES 17 A 250 LEU GLU ASP LEU ILE LYS ALA ALA ILE GLY GLU HIS THR SEQRES 18 A 250 PHE ASP LEU LEU THR ARG GLN ASP ARG PRO GLY SER THR SEQRES 19 A 250 GLU ALA ARG SER THR ALA GLY HIS PRO ILE THR LEU MET SEQRES 20 A 250 VAL GLY GLU SEQRES 1 B 250 MET THR ASN LEU ALA GLN LYS LEU ARG TYR GLY THR GLN SEQRES 2 B 250 GLN SER HIS THR LEU ALA GLU ASN THR ALA TYR MET LYS SEQRES 3 B 250 CYS PHE LEU LYS GLY ILE VAL GLU ARG GLU PRO PHE ARG SEQRES 4 B 250 GLN LEU LEU ALA ASN LEU TYR TYR LEU TYR SER ALA LEU SEQRES 5 B 250 GLU ALA ALA LEU ARG GLN HIS ARG ASP ASN GLU ILE ILE SEQRES 6 B 250 SER ALA ILE TYR PHE PRO GLU LEU ASN ARG THR ASP LYS SEQRES 7 B 250 LEU ALA GLU ASP LEU THR TYR TYR TYR GLY PRO ASN TRP SEQRES 8 B 250 GLN GLN ILE ILE GLN PRO THR PRO CYS ALA LYS ILE TYR SEQRES 9 B 250 VAL ASP ARG LEU LYS THR ILE ALA ALA SER GLU PRO GLU SEQRES 10 B 250 LEU LEU ILE ALA HIS CYS TYR THR ARG TYR LEU GLY ASP SEQRES 11 B 250 LEU SER GLY GLY GLN SER LEU LYS ASN ILE ILE ARG SER SEQRES 12 B 250 ALA LEU GLN LEU PRO GLU GLY GLU GLY THR ALA MET TYR SEQRES 13 B 250 GLU PHE ASP SER LEU PRO THR PRO GLY ASP ARG ARG GLN SEQRES 14 B 250 PHE LYS GLU ILE TYR ARG ASP VAL LEU ASN SER LEU PRO SEQRES 15 B 250 LEU ASP GLU ALA THR ILE ASN ARG ILE VAL GLU GLU ALA SEQRES 16 B 250 ASN TYR ALA PHE SER LEU ASN ARG GLU VAL MET HIS ASP SEQRES 17 B 250 LEU GLU ASP LEU ILE LYS ALA ALA ILE GLY GLU HIS THR SEQRES 18 B 250 PHE ASP LEU LEU THR ARG GLN ASP ARG PRO GLY SER THR SEQRES 19 B 250 GLU ALA ARG SER THR ALA GLY HIS PRO ILE THR LEU MET SEQRES 20 B 250 VAL GLY GLU HET HEM A 300 43 HET NO A 301 2 HET HEM B 300 43 HET NO B 301 2 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM NO NITRIC OXIDE HETSYN HEM HEME HETSYN NO NITROGEN MONOXIDE FORMUL 3 HEM 2(C34 H32 FE N4 O4) FORMUL 4 NO 2(N O) FORMUL 7 HOH *311(H2 O) HELIX 1 1 ASN A 3 THR A 12 1 10 HELIX 2 2 THR A 12 ASN A 21 1 10 HELIX 3 3 THR A 22 LYS A 30 1 9 HELIX 4 4 GLU A 34 HIS A 59 1 26 HELIX 5 5 ASN A 62 TYR A 69 1 8 HELIX 6 6 PHE A 70 ASN A 74 5 5 HELIX 7 7 ARG A 75 GLY A 88 1 14 HELIX 8 8 ASN A 90 ILE A 95 1 6 HELIX 9 9 THR A 98 GLU A 115 1 18 HELIX 10 10 LEU A 118 LEU A 131 1 14 HELIX 11 11 SER A 132 LEU A 145 1 14 HELIX 12 12 THR A 153 GLU A 157 5 5 HELIX 13 13 THR A 163 LEU A 181 1 19 HELIX 14 14 ASP A 184 GLY A 218 1 35 HELIX 15 15 GLY A 218 GLN A 228 1 11 HELIX 16 16 ASN B 3 THR B 12 1 10 HELIX 17 17 THR B 12 ASN B 21 1 10 HELIX 18 18 THR B 22 LYS B 30 1 9 HELIX 19 19 GLU B 34 HIS B 59 1 26 HELIX 20 20 ASN B 62 TYR B 69 1 8 HELIX 21 21 PHE B 70 ASN B 74 5 5 HELIX 22 22 ARG B 75 GLY B 88 1 14 HELIX 23 23 ASN B 90 ILE B 95 1 6 HELIX 24 24 THR B 98 GLU B 115 1 18 HELIX 25 25 LEU B 118 LEU B 131 1 14 HELIX 26 26 SER B 132 LEU B 145 1 14 HELIX 27 27 THR B 153 GLU B 157 5 5 HELIX 28 28 THR B 163 LEU B 181 1 19 HELIX 29 29 ASP B 184 ASP B 208 1 25 HELIX 30 30 LEU B 209 GLY B 218 1 10 HELIX 31 31 GLY B 218 ARG B 227 1 10 SHEET 1 A 2 PRO A 243 VAL A 248 0 SHEET 2 A 2 PRO B 243 VAL B 248 -1 O ILE B 244 N MET A 247 LINK NE2 HIS A 16 FE HEM A 300 1555 1555 2.12 LINK FE HEM A 300 N NO A 301 1555 1555 2.06 LINK NE2 HIS B 16 FE HEM B 300 1555 1555 2.05 LINK FE HEM B 300 N NO B 301 1555 1555 2.10 SITE 1 AC1 22 ARG A 9 HIS A 16 ALA A 19 GLU A 20 SITE 2 AC1 22 LEU A 29 TYR A 124 THR A 125 ARG A 126 SITE 3 AC1 22 GLY A 129 SER A 132 GLY A 133 ARG A 175 SITE 4 AC1 22 PHE A 199 ASN A 202 ARG A 230 SER A 233 SITE 5 AC1 22 THR A 234 GLY A 241 ILE A 244 NO A 301 SITE 6 AC1 22 HOH A 366 HOH A 386 SITE 1 AC2 20 ARG B 9 HIS B 16 GLU B 20 LEU B 29 SITE 2 AC2 20 TYR B 124 THR B 125 ARG B 126 GLY B 129 SITE 3 AC2 20 SER B 132 GLY B 133 ARG B 175 PHE B 199 SITE 4 AC2 20 ASN B 202 ARG B 230 SER B 233 THR B 234 SITE 5 AC2 20 GLY B 241 ILE B 244 NO B 301 HOH B 351 SITE 1 AC3 4 GLY A 129 GLY A 133 GLY A 134 HEM A 300 SITE 1 AC4 5 GLY B 129 GLY B 133 GLY B 134 HEM B 300 SITE 2 AC4 5 HOH B 400 CRYST1 57.310 73.760 71.070 90.00 106.91 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 0.017449 0.000000 0.005305 0.00000 SCALE2 0.000000 0.013557 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014707 0.00000