HEADER METAL BINDING PROTEIN 17-FEB-21 7LRR TITLE CO-BOUND CRYSTAL STRUCTURE OF THE ENGINEERED CYT CB562 VARIANT, TITLE 2 DICYT2, CRYSTALLIZED IN THE PRESENCE OF CU(II) (M1) AND CO(II) (M2) COMPND MOL_ID: 1; COMPND 2 MOLECULE: SOLUBLE CYTOCHROME B562; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: CYTOCHROME B-562; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 GENE: CYBC; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS METAL SELECTIVITY, IRVING-WILLIAMS SERIES, METAL BINDING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR T.S.CHOI,F.A.TEZCAN REVDAT 5 16-OCT-24 7LRR 1 REMARK REVDAT 4 17-APR-24 7LRR 1 COMPND REMARK HET HETNAM REVDAT 4 2 1 FORMUL LINK ATOM REVDAT 3 25-OCT-23 7LRR 1 REMARK REVDAT 2 08-MAR-23 7LRR 1 JRNL REVDAT 1 23-FEB-22 7LRR 0 JRNL AUTH T.S.CHOI,F.A.TEZCAN JRNL TITL OVERCOMING UNIVERSAL RESTRICTIONS ON METAL SELECTIVITY BY JRNL TITL 2 PROTEIN DESIGN. JRNL REF NATURE V. 603 522 2022 JRNL REFN ESSN 1476-4687 JRNL PMID 35236987 JRNL DOI 10.1038/S41586-022-04469-8 REMARK 2 REMARK 2 RESOLUTION. 1.89 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.15.2_3472 REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : GEOSTD + MONOMER LIBRARY + CDL V1.2 REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.89 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 44.27 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.390 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.1 REMARK 3 NUMBER OF REFLECTIONS : 17488 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.194 REMARK 3 R VALUE (WORKING SET) : 0.190 REMARK 3 FREE R VALUE : 0.229 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.030 REMARK 3 FREE R VALUE TEST SET COUNT : 3230 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 44.2700 - 5.3700 0.99 1284 146 0.1695 0.1910 REMARK 3 2 5.3700 - 4.2600 0.98 1275 141 0.1614 0.1699 REMARK 3 3 4.2600 - 3.7300 0.99 1268 139 0.1661 0.1610 REMARK 3 4 3.7300 - 3.3900 1.00 1299 134 0.1684 0.2203 REMARK 3 5 3.3900 - 3.1400 0.99 1293 141 0.1917 0.2423 REMARK 3 6 3.1400 - 2.9600 0.98 1276 160 0.2254 0.2593 REMARK 3 7 2.9600 - 2.8100 0.99 1254 140 0.1953 0.2507 REMARK 3 8 2.8100 - 2.6900 0.99 1302 149 0.2051 0.2535 REMARK 3 9 2.6900 - 2.5800 0.99 1270 150 0.2046 0.2358 REMARK 3 10 2.5800 - 2.4900 0.97 1256 156 0.1894 0.2147 REMARK 3 11 2.4900 - 2.4200 0.98 1281 137 0.1969 0.2528 REMARK 3 12 2.4200 - 2.3500 0.98 1243 160 0.1807 0.2375 REMARK 3 13 2.3500 - 2.2900 1.00 1323 118 0.1880 0.2113 REMARK 3 14 2.2900 - 2.2300 0.98 1296 141 0.1906 0.2585 REMARK 3 15 2.2300 - 2.1800 0.97 1247 134 0.1869 0.2796 REMARK 3 16 2.1800 - 2.1300 0.97 1275 143 0.1861 0.2503 REMARK 3 17 2.1300 - 2.0900 0.98 1270 130 0.1882 0.2303 REMARK 3 18 2.0900 - 2.0500 0.98 1280 137 0.1923 0.2180 REMARK 3 19 2.0500 - 2.0100 0.98 1264 148 0.2098 0.2663 REMARK 3 20 2.0100 - 1.9800 0.98 1272 149 0.2116 0.3196 REMARK 3 21 1.9800 - 1.9500 0.95 1246 128 0.2320 0.2620 REMARK 3 22 1.9500 - 1.9200 0.89 1147 128 0.2481 0.3034 REMARK 3 23 1.9200 - 1.8900 0.82 1058 121 0.2691 0.3272 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.219 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 23.225 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 16.99 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 19.43 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.007 1804 REMARK 3 ANGLE : 0.820 2474 REMARK 3 CHIRALITY : 0.039 250 REMARK 3 PLANARITY : 0.005 325 REMARK 3 DIHEDRAL : 11.026 1467 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 7LRR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 17-FEB-21. REMARK 100 THE DEPOSITION ID IS D_1000254913. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 04-JUL-20 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL9-2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.59 REMARK 200 MONOCHROMATOR : SI(111) AND SI(220) DOUBLE REMARK 200 CRYSTAL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : IMOSFLM REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 17578 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.890 REMARK 200 RESOLUTION RANGE LOW (A) : 44.270 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.5 REMARK 200 DATA REDUNDANCY : 30.20 REMARK 200 R MERGE (I) : 0.85290 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 14.7700 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.89 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.96 REMARK 200 COMPLETENESS FOR SHELL (%) : 92.5 REMARK 200 DATA REDUNDANCY IN SHELL : 19.40 REMARK 200 R MERGE FOR SHELL (I) : 0.97260 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 3.300 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: 2BC5 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.19 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.24 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG1500 25%, NACL 200 MM, PH 8 EPPS REMARK 280 100 MM, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 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 27.25500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 32.08500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 30.57500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 32.08500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 27.25500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 30.57500 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: 3530 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 11620 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -68.0 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 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 LYS A 42 CD CE NZ REMARK 470 LYS A 47 CG CD CE NZ REMARK 470 ASP A 50 CG OD1 OD2 REMARK 470 LYS A 51 CG CD CE NZ REMARK 470 ASP B 50 CG OD1 OD2 REMARK 470 GLU B 92 CG CD OE1 OE2 REMARK 470 LYS B 95 CE NZ 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 OD2 ASP A 28 O HOH A 301 2.07 REMARK 500 O HOH A 359 O HOH A 370 2.17 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 ARG A 106 C ARG A 106 OXT 0.145 REMARK 500 ARG B 106 C ARG B 106 OXT 0.144 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 HEC A 201 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 MET A 7 SD REMARK 620 2 HEC A 201 NA 87.8 REMARK 620 3 HEC A 201 NB 85.4 89.5 REMARK 620 4 HEC A 201 NC 91.4 178.8 91.3 REMARK 620 5 HEC A 201 ND 94.6 90.0 179.5 89.1 REMARK 620 6 HIS A 102 NE2 174.2 88.6 90.0 92.2 90.0 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CO A 202 CO REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 60 NE2 REMARK 620 2 HIS A 100 NE2 88.1 REMARK 620 3 HIS A 104 NE2 91.3 91.6 REMARK 620 4 HOH A 335 O 78.4 166.5 90.0 REMARK 620 5 HIS B 67 NE2 87.4 88.2 178.7 89.8 REMARK 620 6 HIS B 71 NE2 169.3 102.5 89.4 90.9 91.9 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CO B 202 CO REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 67 NE2 REMARK 620 2 HIS A 71 NE2 88.2 REMARK 620 3 HOH A 354 O 94.9 85.9 REMARK 620 4 HIS B 60 NE2 87.3 171.7 87.5 REMARK 620 5 HIS B 100 NE2 82.8 96.9 176.2 89.4 REMARK 620 6 HIS B 104 NE2 173.5 89.2 90.9 96.0 91.6 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEC B 201 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 MET B 7 SD REMARK 620 2 HEC B 201 NA 87.7 REMARK 620 3 HEC B 201 NB 86.4 86.8 REMARK 620 4 HEC B 201 NC 93.0 177.9 91.3 REMARK 620 5 HEC B 201 ND 91.5 93.7 177.7 88.2 REMARK 620 6 HIS B 102 NE2 172.4 86.7 88.2 92.4 94.0 REMARK 620 N 1 2 3 4 5 DBREF 7LRR A 1 106 UNP P0ABE7 C562_ECOLX 23 128 DBREF 7LRR B 1 106 UNP P0ABE7 C562_ECOLX 23 128 SEQADV 7LRR TRP A 59 UNP P0ABE7 LYS 81 CONFLICT SEQADV 7LRR HIS A 60 UNP P0ABE7 ASP 82 ENGINEERED MUTATION SEQADV 7LRR HIS A 67 UNP P0ABE7 ILE 89 ENGINEERED MUTATION SEQADV 7LRR HIS A 71 UNP P0ABE7 GLN 93 ENGINEERED MUTATION SEQADV 7LRR CYS A 96 UNP P0ABE7 THR 118 CONFLICT SEQADV 7LRR HIS A 97 UNP P0ABE7 THR 119 ENGINEERED MUTATION SEQADV 7LRR CYS A 98 UNP P0ABE7 ARG 120 CONFLICT SEQADV 7LRR HIS A 100 UNP P0ABE7 ALA 122 ENGINEERED MUTATION SEQADV 7LRR CYS A 101 UNP P0ABE7 TYR 123 CONFLICT SEQADV 7LRR HIS A 104 UNP P0ABE7 LYS 126 ENGINEERED MUTATION SEQADV 7LRR TRP B 59 UNP P0ABE7 LYS 81 CONFLICT SEQADV 7LRR HIS B 60 UNP P0ABE7 ASP 82 ENGINEERED MUTATION SEQADV 7LRR HIS B 67 UNP P0ABE7 ILE 89 ENGINEERED MUTATION SEQADV 7LRR HIS B 71 UNP P0ABE7 GLN 93 ENGINEERED MUTATION SEQADV 7LRR CYS B 96 UNP P0ABE7 THR 118 CONFLICT SEQADV 7LRR HIS B 97 UNP P0ABE7 THR 119 ENGINEERED MUTATION SEQADV 7LRR CYS B 98 UNP P0ABE7 ARG 120 CONFLICT SEQADV 7LRR HIS B 100 UNP P0ABE7 ALA 122 ENGINEERED MUTATION SEQADV 7LRR CYS B 101 UNP P0ABE7 TYR 123 CONFLICT SEQADV 7LRR HIS B 104 UNP P0ABE7 LYS 126 ENGINEERED MUTATION SEQRES 1 A 106 ALA ASP LEU GLU ASP ASN MET GLU THR LEU ASN ASP ASN SEQRES 2 A 106 LEU LYS VAL ILE GLU LYS ALA ASP ASN ALA ALA GLN VAL SEQRES 3 A 106 LYS ASP ALA LEU THR LYS MET ARG ALA ALA ALA LEU ASP SEQRES 4 A 106 ALA GLN LYS ALA THR PRO PRO LYS LEU GLU ASP LYS SER SEQRES 5 A 106 PRO ASP SER PRO GLU MET TRP HIS PHE ARG HIS GLY PHE SEQRES 6 A 106 ASP HIS LEU VAL GLY HIS ILE ASP ASP ALA LEU LYS LEU SEQRES 7 A 106 ALA ASN GLU GLY LYS VAL LYS GLU ALA GLN ALA ALA ALA SEQRES 8 A 106 GLU GLN LEU LYS CYS HIS CYS ASN HIS CYS HIS GLN HIS SEQRES 9 A 106 TYR ARG SEQRES 1 B 106 ALA ASP LEU GLU ASP ASN MET GLU THR LEU ASN ASP ASN SEQRES 2 B 106 LEU LYS VAL ILE GLU LYS ALA ASP ASN ALA ALA GLN VAL SEQRES 3 B 106 LYS ASP ALA LEU THR LYS MET ARG ALA ALA ALA LEU ASP SEQRES 4 B 106 ALA GLN LYS ALA THR PRO PRO LYS LEU GLU ASP LYS SER SEQRES 5 B 106 PRO ASP SER PRO GLU MET TRP HIS PHE ARG HIS GLY PHE SEQRES 6 B 106 ASP HIS LEU VAL GLY HIS ILE ASP ASP ALA LEU LYS LEU SEQRES 7 B 106 ALA ASN GLU GLY LYS VAL LYS GLU ALA GLN ALA ALA ALA SEQRES 8 B 106 GLU GLN LEU LYS CYS HIS CYS ASN HIS CYS HIS GLN HIS SEQRES 9 B 106 TYR ARG HET HEC A 201 43 HET CO A 202 1 HET HEC B 201 43 HET CO B 202 1 HETNAM HEC HEME C HETNAM CO COBALT (II) ION FORMUL 3 HEC 2(C34 H34 FE N4 O4) FORMUL 4 CO 2(CO 2+) FORMUL 7 HOH *183(H2 O) HELIX 1 AA1 ASP A 2 ALA A 20 1 19 HELIX 2 AA2 ASN A 22 GLN A 41 1 20 HELIX 3 AA3 PRO A 45 GLU A 49 5 5 HELIX 4 AA4 SER A 55 GLU A 81 1 27 HELIX 5 AA5 LYS A 83 LEU A 94 1 12 HELIX 6 AA6 LEU A 94 ARG A 106 1 13 HELIX 7 AA7 ASP B 2 LYS B 19 1 18 HELIX 8 AA8 ALA B 23 GLN B 41 1 19 HELIX 9 AA9 PRO B 45 GLU B 49 5 5 HELIX 10 AB1 SER B 55 GLU B 81 1 27 HELIX 11 AB2 LYS B 83 LEU B 94 1 12 HELIX 12 AB3 LEU B 94 ARG B 106 1 13 SSBOND 1 CYS A 96 CYS B 96 1555 1555 2.01 LINK SG CYS A 98 CAB HEC A 201 1555 1555 1.77 LINK SG CYS A 101 CAC HEC A 201 1555 1555 1.77 LINK SG CYS B 98 CAB HEC B 201 1555 1555 1.77 LINK SG CYS B 101 CAC HEC B 201 1555 1555 1.77 LINK SD MET A 7 FE HEC A 201 1555 1555 2.52 LINK NE2 HIS A 60 CO CO A 202 1555 1555 2.27 LINK NE2 HIS A 67 CO CO B 202 1555 1555 2.26 LINK NE2 HIS A 71 CO CO B 202 1555 1555 2.23 LINK NE2 HIS A 100 CO CO A 202 1555 1555 2.22 LINK NE2 HIS A 102 FE HEC A 201 1555 1555 2.23 LINK NE2 HIS A 104 CO CO A 202 1555 1555 2.16 LINK CO CO A 202 O HOH A 335 1555 1555 2.18 LINK CO CO A 202 NE2 HIS B 67 1555 1555 2.12 LINK CO CO A 202 NE2 HIS B 71 1555 1555 2.23 LINK O HOH A 354 CO CO B 202 1555 1555 2.23 LINK SD MET B 7 FE HEC B 201 1555 1555 2.46 LINK NE2 HIS B 60 CO CO B 202 1555 1555 2.26 LINK NE2 HIS B 100 CO CO B 202 1555 1555 2.18 LINK NE2 HIS B 102 FE HEC B 201 1555 1555 2.17 LINK NE2 HIS B 104 CO CO B 202 1555 1555 2.19 CRYST1 54.510 61.150 64.170 90.00 90.00 90.00 P 21 21 21 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 0.018345 0.000000 0.000000 0.00000 SCALE2 0.000000 0.016353 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015584 0.00000