HEADER ELECTRON TRANSPORT 03-NOV-05 2EWK TITLE THE T24V MUTANT OF TETRAHEME CYTOCHROME C3 FROM DESULFOVIBRIO VULGARIS TITLE 2 MIYAZAKI F COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYTOCHROME C3; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: DESULFOVIBRIO VULGARIS STR. 'MIYAZAKI F'; SOURCE 3 ORGANISM_TAXID: 883; SOURCE 4 STRAIN: MIYAZAKI; SOURCE 5 EXPRESSION_SYSTEM: SHEWANELLA ONEIDENSIS; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 70863; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: TSP-C; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PKF19K KEYWDS ELECTRON TRANSPORT EXPDTA X-RAY DIFFRACTION AUTHOR Y.HIGUCHI,H.KOMORI,K.MORITA REVDAT 4 10-NOV-21 2EWK 1 REMARK SEQADV LINK REVDAT 3 26-JAN-10 2EWK 1 JRNL REVDAT 2 24-FEB-09 2EWK 1 VERSN REVDAT 1 28-NOV-06 2EWK 0 JRNL AUTH Y.TAKAYAMA,N.D.WERBECK,H.KOMORI,K.MORITA,K.OZAWA,Y.HIGUCHI, JRNL AUTH 2 H.AKUTSU JRNL TITL STRATEGIC ROLES OF AXIAL HISTIDINES IN STRUCTURE FORMATION JRNL TITL 2 AND REDOX REGULATION OF TETRAHEME CYTOCHROME C3. JRNL REF BIOCHEMISTRY V. 47 9405 2008 JRNL REFN ISSN 0006-2960 JRNL PMID 18702516 JRNL DOI 10.1021/BI8005708 REMARK 2 REMARK 2 RESOLUTION. 1.00 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) : 1.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 92.2 REMARK 3 CROSS-VALIDATION METHOD : FREE R 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) : 0.112 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.110 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.140 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 61485 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : 0.106 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)) : 55947 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 801 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 172 REMARK 3 SOLVENT ATOMS : 362 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : 1335.0 REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : 0.00 REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : 0 REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : 12018 REMARK 3 NUMBER OF RESTRAINTS : 13116 REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.016 REMARK 3 ANGLE DISTANCES (A) : 0.029 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000 REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : 0.029 REMARK 3 ZERO CHIRAL VOLUMES (A**3) : 0.087 REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : 0.101 REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : 0.034 REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : 0.006 REMARK 3 SIMILAR ADP COMPONENTS (A**2) : 0.041 REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : 0.104 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: NULL REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : ENGH & HUBER REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2EWK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 11-NOV-05. REMARK 100 THE DEPOSITION ID IS D_1000035180. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 04-OCT-04 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7 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) : 0.71 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 66241 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.000 REMARK 200 RESOLUTION RANGE LOW (A) : 24.100 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL 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) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL 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: SHELX REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 53.32 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.63 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 70% MPD, VAPOR DIFFUSION, TEMPERATURE REMARK 280 277K, PH 7 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 26.21250 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 17.20600 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 33.76850 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 17.20600 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 26.21250 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 33.76850 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A 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 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 LEU A 9 CA - CB - CG ANGL. DEV. = 14.4 DEGREES REMARK 500 LYS A 29 CA - CB - CG ANGL. DEV. = 14.0 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 CYS A 51 -123.72 -102.05 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 A1001 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 22 NE2 REMARK 620 2 HEM A1001 NA 91.6 REMARK 620 3 HEM A1001 NB 90.4 90.3 REMARK 620 4 HEM A1001 NC 91.0 177.4 89.6 REMARK 620 5 HEM A1001 ND 90.5 89.9 179.0 90.2 REMARK 620 6 HIS A 34 NE2 178.9 87.4 89.4 90.0 89.6 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM A1003 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 25 NE2 REMARK 620 2 HEM A1003 NA 91.0 REMARK 620 3 HEM A1003 NB 91.7 89.0 REMARK 620 4 HEM A1003 NC 88.9 179.5 90.6 REMARK 620 5 HEM A1003 ND 87.6 90.6 179.2 89.8 REMARK 620 6 HIS A 83 NE2 176.5 88.5 91.8 91.7 88.9 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM A1002 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 35 NE2 REMARK 620 2 HEM A1002 NA 89.1 REMARK 620 3 HEM A1002 NB 92.6 90.2 REMARK 620 4 HEM A1002 NC 91.1 179.6 90.1 REMARK 620 5 HEM A1002 ND 88.5 89.9 178.8 89.7 REMARK 620 6 HIS A 52 NE2 177.1 88.1 88.2 91.7 90.7 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM A1004 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 70 NE2 REMARK 620 2 HEM A1004 NA 92.7 REMARK 620 3 HEM A1004 NB 88.9 91.1 REMARK 620 4 HEM A1004 NC 90.2 177.1 88.8 REMARK 620 5 HEM A1004 ND 87.8 89.1 176.6 91.2 REMARK 620 6 HIS A 106 NE2 176.9 90.0 92.8 87.1 90.6 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 1004 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 1002 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 1001 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 1003 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2EWI RELATED DB: PDB REMARK 900 THE SAME PROTEIN(F20Y) DBREF 2EWK A 1 107 UNP P00132 CYC3_DESVM 24 130 SEQADV 2EWK VAL A 24 UNP P00132 THR 47 ENGINEERED MUTATION SEQRES 1 A 107 ALA PRO LYS ALA PRO ALA ASP GLY LEU LYS MET ASP LYS SEQRES 2 A 107 THR LYS GLN PRO VAL VAL PHE ASN HIS SER VAL HIS LYS SEQRES 3 A 107 ALA VAL LYS CYS GLY ASP CYS HIS HIS PRO VAL ASN GLY SEQRES 4 A 107 LYS GLU ASP TYR GLN LYS CYS ALA THR ALA GLY CYS HIS SEQRES 5 A 107 ASP ASN MET ASP LYS LYS ASP LYS SER ALA LYS GLY TYR SEQRES 6 A 107 TYR HIS ALA MET HIS ASP LYS GLY THR LYS PHE LYS SER SEQRES 7 A 107 CYS VAL GLY CYS HIS LEU GLU THR ALA GLY ALA ASP ALA SEQRES 8 A 107 ALA LYS LYS LYS GLU LEU THR GLY CYS LYS GLY SER LYS SEQRES 9 A 107 CYS HIS SER HET HEM A1004 43 HET HEM A1002 43 HET HEM A1001 43 HET HEM A1003 43 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 HEM 4(C34 H32 FE N4 O4) FORMUL 6 HOH *362(H2 O) HELIX 1 1 HIS A 22 LYS A 26 5 5 HELIX 2 2 LYS A 29 HIS A 34 1 6 HELIX 3 3 GLY A 64 ASP A 71 1 8 HELIX 4 4 SER A 78 GLY A 88 1 11 HELIX 5 5 ASP A 90 GLY A 99 1 10 SHEET 1 A 2 LEU A 9 MET A 11 0 SHEET 2 A 2 VAL A 18 PHE A 20 -1 O VAL A 18 N MET A 11 SHEET 1 B 2 PRO A 36 VAL A 37 0 SHEET 2 B 2 LYS A 40 GLU A 41 -1 O LYS A 40 N VAL A 37 LINK SG CYS A 30 CAB HEM A1001 1555 1555 1.84 LINK SG CYS A 33 CAC HEM A1001 1555 1555 1.85 LINK SG CYS A 46 CAB HEM A1002 1555 1555 1.85 LINK SG CYS A 51 CAC HEM A1002 1555 1555 1.85 LINK SG CYS A 79 CAB HEM A1003 1555 1555 1.84 LINK SG CYS A 82 CAC HEM A1003 1555 1555 1.86 LINK SG CYS A 100 CAB HEM A1004 1555 1555 1.86 LINK SG CYS A 105 CAC HEM A1004 1555 1555 1.87 LINK NE2 HIS A 22 FE HEM A1001 1555 1555 2.00 LINK NE2 HIS A 25 FE HEM A1003 1555 1555 1.98 LINK NE2 HIS A 34 FE HEM A1001 1555 1555 1.97 LINK NE2 HIS A 35 FE HEM A1002 1555 1555 1.98 LINK NE2 HIS A 52 FE HEM A1002 1555 1555 1.97 LINK NE2 HIS A 70 FE HEM A1004 1555 1555 1.98 LINK NE2 HIS A 83 FE HEM A1003 1555 1555 1.97 LINK NE2 HIS A 106 FE HEM A1004 1555 1555 1.98 SITE 1 AC1 24 MET A 11 ASP A 12 LYS A 13 THR A 14 SITE 2 AC1 24 GLN A 16 PRO A 17 VAL A 18 GLY A 39 SITE 3 AC1 24 TYR A 65 TYR A 66 HIS A 70 CYS A 79 SITE 4 AC1 24 VAL A 80 HIS A 83 LEU A 97 THR A 98 SITE 5 AC1 24 GLY A 99 CYS A 100 CYS A 105 HIS A 106 SITE 6 AC1 24 HOH A2019 HOH A2037 HOH A2064 HOH A2103 SITE 1 AC2 18 CYS A 33 HIS A 35 ASP A 42 GLN A 44 SITE 2 AC2 18 LYS A 45 CYS A 46 CYS A 51 HIS A 52 SITE 3 AC2 18 HIS A 67 ALA A 68 THR A 74 LYS A 75 SITE 4 AC2 18 PHE A 76 HOH A2024 HOH A2033 HOH A2043 SITE 5 AC2 18 HOH A2051 HOH A2065 SITE 1 AC3 24 PRO A 2 LYS A 3 ALA A 4 PRO A 5 SITE 2 AC3 24 LEU A 9 MET A 11 PHE A 20 HIS A 22 SITE 3 AC3 24 HIS A 25 VAL A 28 CYS A 30 CYS A 33 SITE 4 AC3 24 HIS A 34 TYR A 43 LYS A 45 CYS A 46 SITE 5 AC3 24 HEM A1003 HOH A2001 HOH A2013 HOH A2116 SITE 6 AC3 24 HOH A2141 HOH A2151 HOH A2158 HOH A2260 SITE 1 AC4 19 PHE A 20 ASN A 21 VAL A 24 HIS A 25 SITE 2 AC4 19 LYS A 77 CYS A 79 CYS A 82 HIS A 83 SITE 3 AC4 19 LYS A 93 LYS A 104 HEM A1001 HOH A2017 SITE 4 AC4 19 HOH A2049 HOH A2086 HOH A2179 HOH A2184 SITE 5 AC4 19 HOH A2222 HOH A2226 HOH A2294 CRYST1 52.425 67.537 34.412 90.00 90.00 90.00 P 21 21 21 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 0.019075 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014807 0.000000 0.00000 SCALE3 0.000000 0.000000 0.029060 0.00000