HEADER OXYGEN BINDING 04-SEP-07 2Z8A TITLE LIGAND MIGRATION AND BINDING IN THE DIMERIC HEMOGLOBIN OF SCAPHARCA TITLE 2 INAEQUIVALVIS: I25W WITH CO BOUND TO HEME AND IN THE PRESENCE OF 3 TITLE 3 ATOMS OF XE COMPND MOL_ID: 1; COMPND 2 MOLECULE: GLOBIN-1; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: GLOBIN I, HBI, DIMERIC HEMOGLOBIN; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: 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 OXYGEN TRANSPORT, ALLOSTERY, OXYGEN AFFINITY, CYTOPLASM, HEME, IRON, KEYWDS 2 METAL-BINDING, OXYGEN STORAGE/TRANSPORT, OXYGEN BINDING EXPDTA X-RAY DIFFRACTION AUTHOR J.E.KNAPP,W.E.ROYER JR.,K.NIENHAUS,P.PALLADINO,G.U.NIENHAUS REVDAT 7 01-NOV-23 2Z8A 1 REMARK REVDAT 6 10-NOV-21 2Z8A 1 REMARK SEQADV LINK REVDAT 5 11-OCT-17 2Z8A 1 REMARK REVDAT 4 24-MAR-09 2Z8A 1 REMARK REVDAT 3 24-FEB-09 2Z8A 1 VERSN REVDAT 2 18-DEC-07 2Z8A 1 JRNL REVDAT 1 27-NOV-07 2Z8A 0 JRNL AUTH K.NIENHAUS,J.E.KNAPP,P.PALLADINO,W.E.ROYER JR.,G.U.NIENHAUS JRNL TITL LIGAND MIGRATION AND BINDING IN THE DIMERIC HEMOGLOBIN OF JRNL TITL 2 SCAPHARCA INAEQUIVALVIS JRNL REF BIOCHEMISTRY V. 46 14018 2007 JRNL REFN ISSN 0006-2960 JRNL PMID 18001141 JRNL DOI 10.1021/BI7016798 REMARK 2 REMARK 2 RESOLUTION. 1.06 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL-97 REMARK 3 AUTHORS : G.M.SHELDRICK REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.06 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 46.30 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 95.3 REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.143 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.162 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 10566 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : NULL REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE (F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2251 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 99 REMARK 3 SOLVENT ATOMS : 373 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : NULL REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : NULL REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : NULL REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : NULL REMARK 3 NUMBER OF RESTRAINTS : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.004 REMARK 3 ANGLE DISTANCES (A) : 0.014 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : 0.024 REMARK 3 ZERO CHIRAL VOLUMES (A**3) : 0.017 REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : 0.022 REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : 0.014 REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : NULL REMARK 3 SIMILAR ADP COMPONENTS (A**2) : NULL REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : 0.077 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: NULL REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : NULL REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE MODEL WAS REFINED WITH A REMARK 3 COMBINATION OF CNS AND SHELX WITH A ROUND OF MANUAL INTERVENTION REMARK 3 IN BETWEEN. REMARK 4 REMARK 4 2Z8A COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 05-SEP-07. REMARK 100 THE DEPOSITION ID IS D_1000027646. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 07-NOV-05 REMARK 200 TEMPERATURE (KELVIN) : 110.0 REMARK 200 PH : 7.50 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 14-BM-C REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 118984 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.060 REMARK 200 RESOLUTION RANGE LOW (A) : 46.300 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 95.3 REMARK 200 DATA REDUNDANCY : 4.400 REMARK 200 R MERGE (I) : 0.07200 REMARK 200 R SYM (I) : 0.07200 REMARK 200 FOR THE DATA SET : 24.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.06 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.10 REMARK 200 COMPLETENESS FOR SHELL (%) : 90.4 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.28600 REMARK 200 R SYM FOR SHELL (I) : 0.28600 REMARK 200 FOR SHELL : 5.500 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: PDB ENTRY 3SDH REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 42.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.11 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.5-2.5M PHOSPHATE BUFFER, PH 7.50, REMARK 280 SMALL TUBES, TEMPERATURE 298K 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 46.33000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 21.69500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 46.33000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 21.69500 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 5670 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 12260 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -59.0 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A9352 LIES ON A SPECIAL POSITION. 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 1001 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ARG B2104 NE - CZ - NH1 ANGL. DEV. = 3.1 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 ASN A1126 34.23 74.53 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 A1147 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A1101 NE2 REMARK 620 2 HEM A1147 NA 90.1 REMARK 620 3 HEM A1147 NB 90.3 89.3 REMARK 620 4 HEM A1147 NC 89.7 179.8 90.7 REMARK 620 5 HEM A1147 ND 89.5 89.8 179.1 90.2 REMARK 620 6 CMO A1148 C 178.3 91.2 90.9 89.1 89.3 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM B2147 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B2101 NE2 REMARK 620 2 HEM B2147 NA 89.6 REMARK 620 3 HEM B2147 NB 89.6 89.6 REMARK 620 4 HEM B2147 NC 89.3 178.9 90.4 REMARK 620 5 HEM B2147 ND 89.9 90.1 179.4 89.9 REMARK 620 6 CMO B2148 C 178.6 91.8 90.2 89.3 90.2 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 PO4 B 5402 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 1147 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 2147 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CMO A 1148 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CMO B 2148 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE XE B 5502 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE XE A 5505 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC8 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE XE B 5506 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3SDH RELATED DB: PDB REMARK 900 WILD TYPE HBI (CO LIGAND BOUND) REMARK 900 RELATED ID: 4SDH RELATED DB: PDB REMARK 900 WILD TYPE HBI (NO LIGAND) REMARK 900 RELATED ID: 2GRH RELATED DB: PDB REMARK 900 MUTANT(M37F) OF HBI IN COMPLEX WITH CO REMARK 900 RELATED ID: 2Z85 RELATED DB: PDB REMARK 900 MUTANT(M37F) OF HBI, UNLIGANDED REMARK 900 RELATED ID: 2R4W RELATED DB: PDB REMARK 900 MUTANT(M37F) OF HBI IN COMPLEX WITH CO REMARK 900 RELATED ID: 2R4X RELATED DB: PDB REMARK 900 MUTANT(H69V/I114M) OF HBI IN COMPLEX WITH CO REMARK 900 RELATED ID: 2R4Y RELATED DB: PDB REMARK 900 MUTANT(H69V/I114M) OF HBI, UNLIGANDED REMARK 900 RELATED ID: 2R4Z RELATED DB: PDB REMARK 900 MUTANT(I25W) OF HBI IN COMPLEX WITH CO DBREF 2Z8A A 1001 1146 UNP P02213 GLB1_SCAIN 1 146 DBREF 2Z8A B 2001 2146 UNP P02213 GLB1_SCAIN 1 146 SEQADV 2Z8A TRP A 1025 UNP P02213 ILE 25 ENGINEERED MUTATION SEQADV 2Z8A TRP B 2025 UNP P02213 ILE 25 ENGINEERED MUTATION 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 TRP 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 ASP 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 TRP 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 ASP 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 A1147 43 HET CMO A1148 2 HET XE A5504 1 HET XE A5505 1 HET HEM B2147 43 HET CMO B2148 2 HET PO4 B5402 5 HET XE B5502 1 HET XE B5506 1 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM CMO CARBON MONOXIDE HETNAM XE XENON HETNAM PO4 PHOSPHATE ION HETSYN HEM HEME FORMUL 3 HEM 2(C34 H32 FE N4 O4) FORMUL 4 CMO 2(C O) FORMUL 5 XE 4(XE) FORMUL 9 PO4 O4 P 3- FORMUL 12 HOH *373(H2 O) HELIX 1 1 SER A 1002 GLN A 1009 1 8 HELIX 2 2 THR A 1011 GLY A 1026 1 16 HELIX 3 3 ASP A 1028 ASN A 1044 1 17 HELIX 4 4 GLN A 1045 GLY A 1055 5 11 HELIX 5 5 ASP A 1056 ALA A 1062 5 7 HELIX 6 6 ASN A 1063 GLN A 1083 1 21 HELIX 7 7 ASN A 1086 ARG A 1104 1 19 HELIX 8 8 SER A 1107 GLY A 1112 1 6 HELIX 9 9 ILE A 1114 LYS A 1125 1 12 HELIX 10 10 GLY A 1128 LEU A 1146 1 19 HELIX 11 11 SER B 2002 GLN B 2009 1 8 HELIX 12 12 THR B 2011 GLY B 2026 1 16 HELIX 13 13 ASP B 2028 ASN B 2044 1 17 HELIX 14 14 GLN B 2045 GLY B 2055 5 11 HELIX 15 15 ASP B 2056 ALA B 2062 5 7 HELIX 16 16 ASN B 2063 GLN B 2083 1 21 HELIX 17 17 ASN B 2086 THR B 2103 1 18 HELIX 18 18 SER B 2107 GLY B 2112 1 6 HELIX 19 19 ILE B 2114 LYS B 2125 1 12 HELIX 20 20 GLY B 2128 ALA B 2145 1 18 LINK NE2 HIS A1101 FE HEM A1147 1555 1555 2.04 LINK FE HEM A1147 C CMO A1148 1555 1555 1.81 LINK NE2 HIS B2101 FE HEM B2147 1555 1555 2.04 LINK FE HEM B2147 C CMO B2148 1555 1555 1.80 SITE 1 AC1 6 THR B2011 ASP B2013 HOH B9038 HOH B9197 SITE 2 AC1 6 HOH B9366 HOH B9379 SITE 1 AC2 22 TYR A1050 PHE A1051 ARG A1053 HIS A1069 SITE 2 AC2 22 LEU A1073 LEU A1077 PHE A1097 ASN A1100 SITE 3 AC2 22 HIS A1101 ARG A1104 GLU A1110 PHE A1111 SITE 4 AC2 22 CMO A1148 XE A5505 HOH A9012 HOH A9033 SITE 5 AC2 22 HOH A9068 HOH A9075 HOH A9076 LYS B2096 SITE 6 AC2 22 ASN B2100 HOH B9044 SITE 1 AC3 21 LYS A1096 ASN A1100 HOH A9001 HOH A9069 SITE 2 AC3 21 TYR B2050 PHE B2051 ARG B2053 HIS B2069 SITE 3 AC3 21 LEU B2073 PHE B2097 ASN B2100 HIS B2101 SITE 4 AC3 21 ARG B2104 GLU B2110 PHE B2111 CMO B2148 SITE 5 AC3 21 XE B5506 HOH B9011 HOH B9040 HOH B9044 SITE 6 AC3 21 HOH B9110 SITE 1 AC4 5 MET A1037 PHE A1051 HIS A1069 LEU A1073 SITE 2 AC4 5 HEM A1147 SITE 1 AC5 5 MET B2037 PHE B2051 HIS B2069 LEU B2073 SITE 2 AC5 5 HEM B2147 SITE 1 AC6 1 LEU B2077 SITE 1 AC7 3 PHE A1097 PHE A1111 HEM A1147 SITE 1 AC8 3 PHE B2097 PHE B2111 HEM B2147 CRYST1 92.660 43.390 82.290 90.00 122.02 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 0.010792 0.000000 0.006749 0.00000 SCALE2 0.000000 0.023047 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014333 0.00000