HEADER ELECTRON TRANSPORT 04-APR-02 1LC2 TITLE SOLUTION STRUCTURE OF REDUCED HORSE HEART CYTOCHROME C IN 30% TITLE 2 ACETONITRILE SOLUTION, NMR 30 STRUCTURES COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYTOCHROME C; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: FERROCYTOCHROME C SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: EQUUS CABALLUS; SOURCE 3 ORGANISM_COMMON: HORSE; SOURCE 4 ORGANISM_TAXID: 9796; SOURCE 5 ORGAN: HEART KEYWDS CYTOCHROME C, ORGANIC SOLVENT, ELECTRON TRANSPORT EXPDTA SOLUTION NMR NUMMDL 30 AUTHOR S.G.SIVAKOLUNDU,P.A.MABROUK REVDAT 3 23-FEB-22 1LC2 1 REMARK LINK REVDAT 2 24-FEB-09 1LC2 1 VERSN REVDAT 1 03-JUN-03 1LC2 0 JRNL AUTH S.G.SIVAKOLUNDU,P.A.MABROUK JRNL TITL STRUCTURE FUNCTION RELATIONSHIP OF REDUCED CYTOCHROME C JRNL TITL 2 PROBED BY COMPLETE SOLUTION STRUCTURE DETERMINATION IN 30% JRNL TITL 3 ACETONITRILE/WATER SOLUTION JRNL REF J.BIOL.INORG.CHEM. V. 8 527 2003 JRNL REFN ISSN 0949-8257 JRNL PMID 12764601 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : RNMR 1.0, AMBER 5.0 REMARK 3 AUTHORS : DAVID RUBEN (RNMR), CASE, PEARLMAN, CALDWELL, REMARK 3 CHEATHAM III, ROSS, SIMMERLING, DARDEN, MERZ, REMARK 3 STANTON, CHENG, VINCENT, CROWLEY, FERGUSON, RADMER, REMARK 3 SEIBEL, SINGH, WEINER, KOLLMAN (AMBER) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE STRUCTURES ARE BASED ON A TOTAL OF REMARK 3 2232 NOE-BASED DISTANCE RESTRAINTS AND 73 DIHEDRAL ANGLE REMARK 3 RESTRAINTS REMARK 4 REMARK 4 1LC2 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 09-APR-02. REMARK 100 THE DEPOSITION ID IS D_1000015827. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298 REMARK 210 PH : 7.2 REMARK 210 IONIC STRENGTH : 50MM REMARK 210 PRESSURE : 1 ATM REMARK 210 SAMPLE CONTENTS : 5MM FERROCYTOCHROME C 1H; 50MM REMARK 210 PHOSPHATE BUFFER; 70% H2O, 30% REMARK 210 CD3CN REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : DQF-COSY; NOESY REMARK 210 SPECTROMETER FIELD STRENGTH : 591.1 MHZ REMARK 210 SPECTROMETER MODEL : HOME BUILT REMARK 210 SPECTROMETER MANUFACTURER : HOME-BUILT REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : FELIX 2000, DYANA 1.5, AMBER 5.0 REMARK 210 METHOD USED : SIMULATED ANNEALING, TORSION REMARK 210 ANGLE DYNAMICS, RESTRAINED REMARK 210 ENERGY MINIMIZATION REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 30 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 30 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LEAST REMARK 210 RESTRAINT VIOLATIONS REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: THIS STRUCTURE WAS DETERMINED USING STANDARD 2D REMARK 210 HOMONUCLEAR TECHNIQUES REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS. 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: CLOSE CONTACTS 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 OE1 GLU A 66 HH TYR A 74 1.38 REMARK 500 HG1 THR A 78 O2D HEC A 105 1.58 REMARK 500 O THR A 58 HG1 THR A 63 1.60 REMARK 500 REMARK 500 REMARK: NULL 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 2 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 3.5 DEGREES REMARK 500 2 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.5 DEGREES REMARK 500 2 ARG A 91 NE - CZ - NH2 ANGL. DEV. = -3.5 DEGREES REMARK 500 3 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 4 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.9 DEGREES REMARK 500 4 ARG A 91 NE - CZ - NH2 ANGL. DEV. = -3.4 DEGREES REMARK 500 5 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.2 DEGREES REMARK 500 7 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 4.0 DEGREES REMARK 500 8 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 8 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.9 DEGREES REMARK 500 9 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 10 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.5 DEGREES REMARK 500 11 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 15 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 3.9 DEGREES REMARK 500 16 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 16 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 4.2 DEGREES REMARK 500 17 TYR A 48 CB - CG - CD2 ANGL. DEV. = -4.0 DEGREES REMARK 500 18 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 5.0 DEGREES REMARK 500 19 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 19 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.8 DEGREES REMARK 500 21 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 3.2 DEGREES REMARK 500 21 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.1 DEGREES REMARK 500 22 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 24 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 4.6 DEGREES REMARK 500 25 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 3.1 DEGREES REMARK 500 25 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 26 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 4.3 DEGREES REMARK 500 26 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 28 ARG A 38 NE - CZ - NH1 ANGL. DEV. = 3.8 DEGREES REMARK 500 28 ARG A 91 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 28 ARG A 91 NE - CZ - NH2 ANGL. DEV. = -3.5 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 1 CYS A 17 -33.64 -141.15 REMARK 500 1 VAL A 20 -66.39 -143.42 REMARK 500 1 LYS A 25 97.76 -162.43 REMARK 500 1 THR A 28 -10.42 -154.30 REMARK 500 1 LEU A 32 81.50 -68.70 REMARK 500 1 HIS A 33 73.14 -62.68 REMARK 500 1 LEU A 35 -48.60 68.29 REMARK 500 1 ARG A 38 -127.93 -86.89 REMARK 500 1 PRO A 44 -160.19 -76.01 REMARK 500 1 TYR A 48 -85.72 -153.55 REMARK 500 1 ILE A 57 -6.18 -171.66 REMARK 500 1 THR A 58 115.95 55.84 REMARK 500 1 GLU A 62 -71.65 -71.96 REMARK 500 1 ASN A 70 91.71 -163.30 REMARK 500 1 MET A 80 84.20 25.31 REMARK 500 1 PHE A 82 -45.41 -163.34 REMARK 500 1 ALA A 83 0.96 46.58 REMARK 500 1 LYS A 86 -56.87 62.29 REMARK 500 1 ALA A 101 1.28 -61.19 REMARK 500 1 ASN A 103 -34.59 -153.57 REMARK 500 2 VAL A 11 29.62 -76.04 REMARK 500 2 LYS A 13 -55.59 -126.99 REMARK 500 2 HIS A 18 12.17 -150.47 REMARK 500 2 THR A 19 104.90 -42.76 REMARK 500 2 VAL A 20 -8.27 -142.29 REMARK 500 2 HIS A 26 -96.81 -81.57 REMARK 500 2 LYS A 27 106.51 56.33 REMARK 500 2 THR A 28 -31.42 57.85 REMARK 500 2 ASN A 31 142.16 59.57 REMARK 500 2 ALA A 51 -83.87 53.67 REMARK 500 2 LYS A 55 -1.31 -163.29 REMARK 500 2 LYS A 60 -176.73 -171.30 REMARK 500 2 GLU A 62 12.68 -66.21 REMARK 500 2 THR A 63 -34.80 -157.67 REMARK 500 2 ASN A 70 76.79 -163.84 REMARK 500 2 THR A 78 83.26 -60.56 REMARK 500 2 LYS A 79 31.96 -68.22 REMARK 500 2 PHE A 82 -35.90 -163.43 REMARK 500 2 ALA A 83 -3.96 46.22 REMARK 500 2 LYS A 87 -67.37 -160.59 REMARK 500 2 LYS A 88 -53.72 172.38 REMARK 500 2 ASN A 103 -73.24 -153.05 REMARK 500 3 CYS A 17 -34.70 -141.23 REMARK 500 3 THR A 19 -88.93 38.58 REMARK 500 3 VAL A 20 48.51 37.48 REMARK 500 3 LYS A 22 -40.99 -154.14 REMARK 500 3 THR A 28 -19.77 56.26 REMARK 500 3 ASN A 31 11.25 -65.29 REMARK 500 3 LEU A 32 -33.25 50.52 REMARK 500 3 HIS A 33 72.58 34.50 REMARK 500 REMARK 500 THIS ENTRY HAS 713 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 ASN A 103 GLU A 104 1 149.67 REMARK 500 ASN A 103 GLU A 104 2 124.22 REMARK 500 ASP A 2 VAL A 3 3 143.76 REMARK 500 THR A 49 ASP A 50 7 -146.19 REMARK 500 GLY A 1 ASP A 2 8 -144.78 REMARK 500 GLY A 1 ASP A 2 10 -139.45 REMARK 500 LYS A 55 GLY A 56 10 148.47 REMARK 500 GLY A 1 ASP A 2 15 -149.05 REMARK 500 HIS A 33 GLY A 34 16 149.61 REMARK 500 GLU A 92 ASP A 93 16 140.84 REMARK 500 ASP A 2 VAL A 3 18 145.82 REMARK 500 ASN A 103 GLU A 104 19 134.09 REMARK 500 ILE A 85 LYS A 86 21 146.03 REMARK 500 PRO A 30 ASN A 31 22 -147.39 REMARK 500 LYS A 53 ASN A 54 23 138.03 REMARK 500 THR A 40 GLY A 41 24 145.43 REMARK 500 THR A 28 GLY A 29 26 149.02 REMARK 500 GLY A 1 ASP A 2 27 -149.02 REMARK 500 PRO A 30 ASN A 31 28 -144.65 REMARK 500 ALA A 43 PRO A 44 28 147.00 REMARK 500 ASN A 103 GLU A 104 28 -140.71 REMARK 500 PRO A 30 ASN A 31 29 -149.41 REMARK 500 GLY A 56 ILE A 57 30 -135.23 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 1 ARG A 38 0.12 SIDE CHAIN REMARK 500 2 TYR A 48 0.11 SIDE CHAIN REMARK 500 2 ARG A 91 0.09 SIDE CHAIN REMARK 500 3 TYR A 48 0.08 SIDE CHAIN REMARK 500 3 ARG A 91 0.14 SIDE CHAIN REMARK 500 4 ARG A 91 0.09 SIDE CHAIN REMARK 500 5 TYR A 48 0.08 SIDE CHAIN REMARK 500 6 TYR A 48 0.20 SIDE CHAIN REMARK 500 7 TYR A 48 0.11 SIDE CHAIN REMARK 500 8 TYR A 48 0.08 SIDE CHAIN REMARK 500 9 TYR A 48 0.11 SIDE CHAIN REMARK 500 11 ARG A 38 0.08 SIDE CHAIN REMARK 500 11 ARG A 91 0.11 SIDE CHAIN REMARK 500 11 TYR A 97 0.09 SIDE CHAIN REMARK 500 12 HIS A 18 0.09 SIDE CHAIN REMARK 500 12 ARG A 91 0.13 SIDE CHAIN REMARK 500 13 ARG A 38 0.13 SIDE CHAIN REMARK 500 13 TYR A 48 0.09 SIDE CHAIN REMARK 500 13 TYR A 74 0.07 SIDE CHAIN REMARK 500 13 ARG A 91 0.09 SIDE CHAIN REMARK 500 14 TYR A 48 0.09 SIDE CHAIN REMARK 500 15 PHE A 36 0.10 SIDE CHAIN REMARK 500 16 ARG A 38 0.08 SIDE CHAIN REMARK 500 16 ARG A 91 0.07 SIDE CHAIN REMARK 500 17 PHE A 46 0.08 SIDE CHAIN REMARK 500 18 TYR A 48 0.09 SIDE CHAIN REMARK 500 18 ARG A 91 0.09 SIDE CHAIN REMARK 500 19 ARG A 38 0.22 SIDE CHAIN REMARK 500 19 TYR A 48 0.07 SIDE CHAIN REMARK 500 19 ARG A 91 0.13 SIDE CHAIN REMARK 500 20 ARG A 38 0.14 SIDE CHAIN REMARK 500 20 TYR A 97 0.09 SIDE CHAIN REMARK 500 21 ARG A 91 0.11 SIDE CHAIN REMARK 500 22 ARG A 38 0.12 SIDE CHAIN REMARK 500 22 TYR A 48 0.10 SIDE CHAIN REMARK 500 22 ARG A 91 0.08 SIDE CHAIN REMARK 500 23 ARG A 38 0.10 SIDE CHAIN REMARK 500 23 TYR A 48 0.10 SIDE CHAIN REMARK 500 23 ARG A 91 0.08 SIDE CHAIN REMARK 500 25 PHE A 36 0.10 SIDE CHAIN REMARK 500 25 ARG A 38 0.18 SIDE CHAIN REMARK 500 25 TYR A 48 0.13 SIDE CHAIN REMARK 500 25 ARG A 91 0.12 SIDE CHAIN REMARK 500 26 ARG A 38 0.14 SIDE CHAIN REMARK 500 27 ARG A 38 0.13 SIDE CHAIN REMARK 500 28 TYR A 48 0.07 SIDE CHAIN REMARK 500 28 ARG A 91 0.10 SIDE CHAIN REMARK 500 30 ARG A 38 0.08 SIDE CHAIN REMARK 500 30 TYR A 48 0.07 SIDE CHAIN 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 105 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 18 NE2 REMARK 620 2 HEC A 105 NA 87.7 REMARK 620 3 HEC A 105 NB 81.4 90.7 REMARK 620 4 HEC A 105 NC 84.9 172.4 89.6 REMARK 620 5 HEC A 105 ND 90.8 88.4 172.2 90.3 REMARK 620 6 MET A 80 SD 174.0 88.1 94.3 99.4 93.4 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 HEC A 105 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1LC1 RELATED DB: PDB REMARK 900 THIS ENTRY CONTAINS THE PROTEIN STRUCTURE OF THE SAME PROTEIN AND REMARK 900 SAME CONDITIONS, NMR AVERAGED SOLUTION STRUCTURE DBREF 1LC2 A 1 104 UNP P00004 CYC_HORSE 1 104 SEQRES 1 A 104 GLY ASP VAL GLU LYS GLY LYS LYS ILE PHE VAL GLN LYS SEQRES 2 A 104 CYS ALA GLN CYS HIS THR VAL GLU LYS GLY GLY LYS HIS SEQRES 3 A 104 LYS THR GLY PRO ASN LEU HIS GLY LEU PHE GLY ARG LYS SEQRES 4 A 104 THR GLY GLN ALA PRO GLY PHE THR TYR THR ASP ALA ASN SEQRES 5 A 104 LYS ASN LYS GLY ILE THR TRP LYS GLU GLU THR LEU MET SEQRES 6 A 104 GLU TYR LEU GLU ASN PRO LYS LYS TYR ILE PRO GLY THR SEQRES 7 A 104 LYS MET ILE PHE ALA GLY ILE LYS LYS LYS THR GLU ARG SEQRES 8 A 104 GLU ASP LEU ILE ALA TYR LEU LYS LYS ALA THR ASN GLU HET HEC A 105 75 HETNAM HEC HEME C FORMUL 2 HEC C34 H34 FE N4 O4 HELIX 1 1 ASP A 2 CYS A 14 1 13 HELIX 2 2 ASP A 50 GLY A 56 1 7 HELIX 3 3 GLU A 62 ASN A 70 1 9 HELIX 4 4 ASN A 70 ILE A 75 1 6 HELIX 5 5 LYS A 87 LYS A 99 1 13 LINK SG CYS A 14 CAB HEC A 105 1555 1555 1.80 LINK SG CYS A 17 CAC HEC A 105 1555 1555 1.82 LINK NE2 HIS A 18 FE HEC A 105 1555 1555 1.98 LINK SD MET A 80 FE HEC A 105 1555 1555 2.67 SITE 1 AC1 20 PHE A 10 LYS A 13 CYS A 14 CYS A 17 SITE 2 AC1 20 HIS A 18 THR A 28 PRO A 30 LEU A 35 SITE 3 AC1 20 THR A 40 THR A 49 ASN A 52 TRP A 59 SITE 4 AC1 20 LEU A 64 TYR A 67 LEU A 68 THR A 78 SITE 5 AC1 20 LYS A 79 MET A 80 PHE A 82 LEU A 94 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 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 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 MODEL 1