HEADER TRANSPORT PROTEIN 27-FEB-04 1SI6 TITLE CRYSTAL STRUCTURE OF CIMEX NITROPHORIN COMPLEX WITH CO COMPND MOL_ID: 1; COMPND 2 MOLECULE: SALIVARY NITROPHORIN; COMPND 3 CHAIN: X; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CIMEX LECTULARIUS; SOURCE 3 ORGANISM_COMMON: BED BUG; SOURCE 4 ORGANISM_TAXID: 79782; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21DE3; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET17B KEYWDS FERROUS HEME, CARBON MONOXIDE, BETA SANDWICH, TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR A.WEICHSEL,W.R.MONTFORT REVDAT 3 23-AUG-23 1SI6 1 REMARK LINK REVDAT 2 24-FEB-09 1SI6 1 VERSN REVDAT 1 08-MAR-05 1SI6 0 JRNL AUTH A.WEICHSEL,W.R.MONTFORT JRNL TITL STRUCTURE OF CIMEX NITROPHORIN COMPLEX WITH CARBON MONOXIDE JRNL REF TO BE PUBLISHED JRNL REFN REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH A.WEICHSEL,E.A.MAES,F.A.WALKER,W.R.MONTFORT REMARK 1 TITL STRUCTURE OF CIMEX NITROPHORIN AND ITS COMPLEX WITH NO REMARK 1 REF TO BE PUBLISHED REMARK 1 REFN REMARK 2 REMARK 2 RESOLUTION. 1.45 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.1.24 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) : 1.45 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 15.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 95.5 REMARK 3 NUMBER OF REFLECTIONS : 42465 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 + TEST SET) : 0.206 REMARK 3 R VALUE (WORKING SET) : 0.203 REMARK 3 FREE R VALUE : 0.257 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 2277 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.45 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.49 REMARK 3 REFLECTION IN BIN (WORKING SET) : 3241 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 98.00 REMARK 3 BIN R VALUE (WORKING SET) : 0.2290 REMARK 3 BIN FREE R VALUE SET COUNT : 158 REMARK 3 BIN FREE R VALUE : 0.2420 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2227 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 45 REMARK 3 SOLVENT ATOMS : 199 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 18.80 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 25.30 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.09000 REMARK 3 B22 (A**2) : -0.04000 REMARK 3 B33 (A**2) : -0.16000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -1.49000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.107 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.093 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.056 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.446 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.946 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.921 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2348 ; 0.020 ; 0.021 REMARK 3 BOND LENGTHS OTHERS (A): 2022 ; 0.002 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3204 ; 1.795 ; 2.002 REMARK 3 BOND ANGLES OTHERS (DEGREES): 4751 ; 0.922 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 283 ; 6.824 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 352 ; 0.120 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2591 ; 0.009 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 431 ; 0.001 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 433 ; 0.289 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 2358 ; 0.250 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): 1394 ; 0.086 ; 0.200 REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 142 ; 0.159 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 7 ; 0.114 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): 36 ; 0.229 ; 0.200 REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 16 ; 0.164 ; 0.200 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): 1410 ; 1.729 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 2301 ; 2.537 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 938 ; 3.126 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 903 ; 4.507 ; 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): 2348 ; 1.795 ; 2.000 REMARK 3 SPHERICITY; FREE ATOMS (A**2): 202 ; 6.382 ; 2.000 REMARK 3 SPHERICITY; BONDED ATOMS (A**2): 2289 ; 3.851 ; 2.000 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. CO LIGAND PARTIALLY DISORDERED REMARK 4 REMARK 4 1SI6 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-MAR-04. REMARK 100 THE DEPOSITION ID IS D_1000021729. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 14-DEC-03 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.6 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 : BENT GE(111) REMARK 200 OPTICS : BENT SI-MIRROR REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDISPLAYF REMARK 200 DATA SCALING SOFTWARE : D*TREK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 44739 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.450 REMARK 200 RESOLUTION RANGE LOW (A) : 15.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 96.7 REMARK 200 DATA REDUNDANCY : 3.700 REMARK 200 R MERGE (I) : 0.07300 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 10.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.45 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.50 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.9 REMARK 200 DATA REDUNDANCY IN SHELL : 3.70 REMARK 200 R MERGE FOR SHELL (I) : 0.27000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.600 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: PDB ENTRY 1NTF REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 41.28 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.09 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 4000, LI2SO4, ETHANOL, PH 8.6, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K 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 20.78300 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 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: X 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 GLY X 1 REMARK 465 SER X 2 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 X 110 CB - CG - OD2 ANGL. DEV. = 5.5 DEGREES REMARK 500 ASP X 140 CB - CG - OD2 ANGL. DEV. = 5.7 DEGREES REMARK 500 ASP X 231 CB - CG - OD2 ANGL. DEV. = 5.5 DEGREES REMARK 500 ARG X 244 NE - CZ - NH1 ANGL. DEV. = 3.9 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 ASP X 52 63.41 68.04 REMARK 500 THR X 81 -169.25 -120.29 REMARK 500 LYS X 158 50.40 -108.59 REMARK 500 ASN X 229 -4.76 74.12 REMARK 500 THR X 242 -62.10 -91.99 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 X 300 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS X 60 SG REMARK 620 2 HEM X 300 NA 89.5 REMARK 620 3 HEM X 300 NB 86.3 89.7 REMARK 620 4 HEM X 300 NC 87.5 176.8 89.1 REMARK 620 5 HEM X 300 ND 90.1 90.1 176.4 90.9 REMARK 620 6 CMO X 298 C 176.9 93.5 94.6 89.6 89.0 REMARK 620 7 CMO X 298 O 177.2 91.0 91.0 92.0 92.7 4.4 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 CMO X 298 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM X 300 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1NTF RELATED DB: PDB REMARK 900 CIMEX NITROPHORIN, FERRIC, UNLIGANDED REMARK 900 RELATED ID: 1NZH RELATED DB: PDB REMARK 900 CIMEX NITROPHORIN, NO COMPLEX DBREF 1SI6 X 1 282 UNP O76745 O76745_9HEMI 21 302 SEQRES 1 X 282 GLY SER PRO PRO ALA GLN LEU SER VAL HIS THR VAL SER SEQRES 2 X 282 TRP ASN SER GLY HIS GLU ARG ALA PRO THR ASN LEU GLU SEQRES 3 X 282 GLU LEU LEU GLY LEU ASN SER GLY GLU THR PRO ASP VAL SEQRES 4 X 282 ILE ALA VAL ALA VAL GLN GLY PHE GLY PHE GLN THR ASP SEQRES 5 X 282 LYS PRO GLN GLN GLY PRO ALA CYS VAL LYS ASN PHE GLN SEQRES 6 X 282 SER LEU LEU THR SER LYS GLY TYR THR LYS LEU LYS ASN SEQRES 7 X 282 THR ILE THR GLU THR MET GLY LEU THR VAL TYR CYS LEU SEQRES 8 X 282 GLU LYS HIS LEU ASP GLN ASN THR LEU LYS ASN GLU THR SEQRES 9 X 282 ILE ILE VAL THR VAL ASP ASP GLN LYS LYS SER GLY GLY SEQRES 10 X 282 ILE VAL THR SER PHE THR ILE TYR ASN LYS ARG PHE SER SEQRES 11 X 282 PHE THR THR SER ARG MET SER ASP GLU ASP VAL THR SER SEQRES 12 X 282 THR ASN THR LYS TYR ALA TYR ASP THR ARG LEU ASP TYR SEQRES 13 X 282 SER LYS LYS ASP ASP PRO SER ASP PHE LEU PHE TRP ILE SEQRES 14 X 282 GLY ASP LEU ASN VAL ARG VAL GLU THR ASN ALA THR HIS SEQRES 15 X 282 ALA LYS SER LEU VAL ASP GLN ASN ASN ILE ASP GLY LEU SEQRES 16 X 282 MET ALA PHE ASP GLN LEU LYS LYS ALA LYS GLU GLN LYS SEQRES 17 X 282 LEU PHE ASP GLY TRP THR GLU PRO GLN VAL THR PHE LYS SEQRES 18 X 282 PRO THR TYR LYS PHE LYS PRO ASN THR ASP GLU TYR ASP SEQRES 19 X 282 LEU SER ALA THR PRO SER TRP THR ASP ARG ALA LEU TYR SEQRES 20 X 282 LYS SER GLY THR GLY LYS THR ILE GLN PRO LEU SER TYR SEQRES 21 X 282 ASN SER LEU THR ASN TYR LYS GLN THR GLU HIS ARG PRO SEQRES 22 X 282 VAL LEU ALA LYS PHE ARG VAL THR LEU HET CMO X 298 2 HET HEM X 300 43 HETNAM CMO CARBON MONOXIDE HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 CMO C O FORMUL 3 HEM C34 H32 FE N4 O4 FORMUL 4 HOH *199(H2 O) HELIX 1 1 ASN X 24 LEU X 29 1 6 HELIX 2 2 GLN X 56 SER X 70 1 15 HELIX 3 3 LYS X 93 LEU X 95 5 3 HELIX 4 4 ASP X 151 ASP X 155 5 5 HELIX 5 5 ASN X 179 GLN X 189 1 11 HELIX 6 6 ASN X 191 ALA X 197 1 7 HELIX 7 7 GLN X 200 GLN X 207 1 8 SHEET 1 A 6 TYR X 73 ILE X 80 0 SHEET 2 A 6 MET X 84 LEU X 91 -1 O CYS X 90 N THR X 74 SHEET 3 A 6 VAL X 39 GLY X 46 -1 N ILE X 40 O TYR X 89 SHEET 4 A 6 GLN X 6 GLY X 17 1 N VAL X 12 O ALA X 43 SHEET 5 A 6 VAL X 274 THR X 281 -1 O PHE X 278 N VAL X 9 SHEET 6 A 6 ILE X 255 SER X 262 -1 N LEU X 258 O LYS X 277 SHEET 1 B 5 GLU X 103 THR X 108 0 SHEET 2 B 5 GLY X 116 ILE X 124 -1 O SER X 121 N GLU X 103 SHEET 3 B 5 LYS X 127 ARG X 135 -1 O PHE X 129 N PHE X 122 SHEET 4 B 5 PHE X 165 ASP X 171 1 O ILE X 169 N THR X 132 SHEET 5 B 5 ASP X 243 LYS X 248 -1 O LYS X 248 N LEU X 166 LINK SG CYS X 60 FE HEM X 300 1555 1555 2.53 LINK C CMO X 298 FE HEM X 300 1555 1555 1.84 LINK O CMO X 298 FE HEM X 300 1555 1555 2.99 CISPEP 1 TYR X 224 LYS X 225 0 -6.60 SITE 1 AC1 3 VAL X 44 PHE X 49 HEM X 300 SITE 1 AC2 21 SER X 16 GLU X 19 ARG X 20 ALA X 21 SITE 2 AC2 21 VAL X 44 GLY X 48 PHE X 49 ASP X 52 SITE 3 AC2 21 GLN X 56 GLY X 57 CYS X 60 VAL X 61 SITE 4 AC2 21 PHE X 64 GLN X 65 LYS X 75 ASN X 78 SITE 5 AC2 21 ILE X 80 THR X 87 TYR X 89 CMO X 298 SITE 6 AC2 21 HOH X 403 CRYST1 49.155 41.566 65.388 90.00 95.48 90.00 P 1 21 1 2 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 0.020344 0.000000 0.001952 0.00000 SCALE2 0.000000 0.024058 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015364 0.00000