4FXC - Header Asymmetric Unit

HEADER ELECTRON TRANSPORT 25-APR-95 4FXC

TITLE TERTIARY STRUCTURE OF [2FE-2S] FERREDOXIN FROM SPIRULINA TITLE 2 PLATENSIS REFINED AT 2.5 ANGSTROMS RESOLUTION: STRUCTURAL TITLE 3 COMPARISONS OF PLANT-TYPE FERREDOXINS AND AN ELECTROSTATIC TITLE 4 POTENTIAL ANALYSIS

COMPND MOL_ID: 1; COMPND 2 MOLECULE: FERREDOXIN; COMPND 3 CHAIN: A

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ARTHROSPIRA PLATENSIS; SOURCE 3 ORGANISM_TAXID: 118562

KEYWDS ELECTRON TRANSPORT

EXPDTA X-RAY DIFFRACTION

AUTHOR K.FUKUYAMA,T.TSUKIHARA

REVDAT 3 24-FEB-09 4FXC 1 VERSN REVDAT 2 01-APR-03 4FXC 1 JRNL REVDAT 1 07-DEC-95 4FXC 0

SPRSDE 07-DEC-95 4FXC 3FXC

JRNL AUTH K.FUKUYAMA,N.UEKI,H.NAKAMURA,T.TSUKIHARA, JRNL AUTH 2 H.MATSUBARA JRNL TITL TERTIARY STRUCTURE OF [2FE-2S] FERREDOXIN FROM JRNL TITL 2 SPIRULINA PLATENSIS REFINED AT 2.5 A RESOLUTION: JRNL TITL 3 STRUCTURAL COMPARISONS OF PLANT-TYPE FERREDOXINS JRNL TITL 4 AND AN ELECTROSTATIC POTENTIAL ANALYSIS. JRNL REF J.BIOCHEM.(TOKYO) V. 117 1017 1995 JRNL REFN ISSN 0021-924X JRNL PMID 8586613

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH T.TSUKIHARA,K.FUKUYAMA,M.NAKAMURA,Y.KATSUBE, REMARK 1 AUTH 2 N.TANAKA,M.KAKUDO,K.WADA,T.HASE,H.MATSUBARA REMARK 1 TITL X-RAY ANALYSIS OF A (2FE-2S) FERREDOXIN FROM REMARK 1 TITL 2 SPIRULINA PLATENSIS. MAIN CHAIN FOLD AND LOCATION REMARK 1 TITL 3 OF SIDE CHAINS AT 2.5 ANGSTROMS RESOLUTION REMARK 1 REF J.BIOCHEM.(TOKYO) V. 90 1763 1981 REMARK 1 REFN ISSN 0021-924X REMARK 1 REFERENCE 2 REMARK 1 AUTH K.FUKUYAMA,T.HASE,S.MATSUMOTO,T.TSUKIHARA, REMARK 1 AUTH 2 Y.KATSUBE,N.TANAKA,M.KAKUDO,K.WADA,H.MATSUBARA REMARK 1 TITL STRUCTURE OF S. PLATENSIS (2FE-2S) FERREDOXIN AND REMARK 1 TITL 2 EVOLUTION OF CHLOROPLAST-TYPE FERREDOXINS REMARK 1 REF NATURE V. 286 522 1980 REMARK 1 REFN ISSN 0028-0836 REMARK 1 REFERENCE 3 REMARK 1 AUTH T.TSUKIHARA,K.FUKUYAMA,H.TAHARA,Y.KATSUBE, REMARK 1 AUTH 2 Y.MATSUURA,N.TANAKA,M.KAKUDO,K.WADA,H.MATSUBARA REMARK 1 TITL X-RAY ANALYSIS OF FERREDOXIN FROM SPIRULINA REMARK 1 TITL 2 PLATENSIS. II. CHELATE STRUCTURE OF ACTIVE CENTER REMARK 1 REF J.BIOCHEM.(TOKYO) V. 84 1645 1978 REMARK 1 REFN ISSN 0021-924X REMARK 1 REFERENCE 4 REMARK 1 EDIT M.O.DAYHOFF REMARK 1 REF ATLAS OF PROTEIN SEQUENCE V. 5 54 1978 REMARK 1 REF 2 AND STRUCTURE (DATA SECTION) REMARK 1 PUBL NATIONAL BIOMEDICAL RESEARCH FOUNDATION, SILVER REMARK 1 PUBL 2 SPRING,MD. REMARK 1 REFN REMARK 1 REFERENCE 5 REMARK 1 AUTH K.OGAWA,T.TSUKIHARA,H.TAHARA,Y.KATSUBE,Y.MATSU-URA, REMARK 1 AUTH 2 N.TANAKA,M.KAKUDO,K.WADA,H.MATSUBARA REMARK 1 TITL LOCATION OF THE IRON-SULFUR CLUSTER IN SPIRULINA REMARK 1 TITL 2 PLATENSIS FERREDOXIN BY X-RAY ANALYSIS REMARK 1 REF J.BIOCHEM.(TOKYO) V. 81 529 1977 REMARK 1 REFN ISSN 0021-924X

REMARK 2 REMARK 2 RESOLUTION. 2.50 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 84.6 REMARK 3 NUMBER OF REFLECTIONS : 2912 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING SET) : 0.199 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 732 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 4 REMARK 3 SOLVENT ATOMS : 42 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.022 REMARK 3 BOND ANGLES (DEGREES) : NULL REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 2.600 ; 2.600 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 3.900 ; 3.900 REMARK 3 SIDE-CHAIN BOND (A**2) : 3.400 ; 3.400 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 4.800 ; 4.800 REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 4FXC COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL 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 <I/SIGMA(I)> 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 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 46.15 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.28 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 54.04000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 54.04000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 31.16000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 14.25500 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 31.16000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 14.25500 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 54.04000 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 31.16000 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 14.25500 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 54.04000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 31.16000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 14.25500 REMARK 290 SMTRY3 8 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 TYR A 3 CB - CG - CD1 ANGL. DEV. = -4.3 DEGREES REMARK 500 ASN A 9 N - CA - C ANGL. DEV. = -17.8 DEGREES REMARK 500 LEU A 35 CA - CB - CG ANGL. DEV. = 15.4 DEGREES REMARK 500 ASP A 36 CA - CB - CG ANGL. DEV. = 14.0 DEGREES REMARK 500 TYR A 39 CB - CG - CD2 ANGL. DEV. = -4.3 DEGREES REMARK 500 CYS A 79 CA - CB - SG ANGL. DEV. = 7.1 DEGREES REMARK 500 HIS A 92 CA - C - N ANGL. DEV. = 15.0 DEGREES REMARK 500 HIS A 92 O - C - N ANGL. DEV. = -10.2 DEGREES REMARK 500 LEU A 97 CB - CG - CD1 ANGL. DEV. = -11.7 DEGREES REMARK 500 LEU A 97 N - CA - C ANGL. DEV. = 16.7 DEGREES REMARK 500 TYR A 98 CA - CB - CG ANGL. DEV. = 15.8 DEGREES REMARK 500 TYR A 98 CB - CG - CD2 ANGL. DEV. = -4.2 DEGREES REMARK 500 TYR A 98 CB - CG - CD1 ANGL. DEV. = 3.7 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 THR A 2 -75.43 -151.04 REMARK 500 ASN A 9 78.78 -151.56 REMARK 500 GLU A 10 -38.96 -37.01 REMARK 500 GLU A 12 -8.45 168.40 REMARK 500 ILE A 14 103.62 -39.08 REMARK 500 ASN A 15 48.54 -150.52 REMARK 500 ASP A 23 15.15 -174.01 REMARK 500 TYR A 39 148.34 -179.03 REMARK 500 SER A 40 -67.83 -131.37 REMARK 500 ALA A 43 10.70 -148.56 REMARK 500 CYS A 46 -159.05 -164.02 REMARK 500 THR A 48 -35.37 -34.95 REMARK 500 GLN A 60 -64.09 -93.09 REMARK 500 SER A 61 -63.13 58.61 REMARK 500 ASP A 68 -66.30 -18.55 REMARK 500 LEU A 77 42.78 -101.96 REMARK 500 THR A 78 -60.23 7.73 REMARK 500 CYS A 79 -34.60 -39.91 REMARK 500 HIS A 92 63.66 -119.60 REMARK 500 LEU A 97 -54.29 -29.68 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 FES A 99 FE1 REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 41 SG REMARK 620 2 CYS A 46 SG 115.1 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 FES A 99 FE2 REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 49 SG REMARK 620 2 CYS A 79 SG 103.3 REMARK 620 N 1

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FES A 99

DBREF 4FXC A 1 98 UNP P00246 FER_SPIPL 1 98

SEQRES 1 A 98 ALA THR TYR LYS VAL THR LEU ILE ASN GLU ALA GLU GLY SEQRES 2 A 98 ILE ASN GLU THR ILE ASP CYS ASP ASP ASP THR TYR ILE SEQRES 3 A 98 LEU ASP ALA ALA GLU GLU ALA GLY LEU ASP LEU PRO TYR SEQRES 4 A 98 SER CYS ARG ALA GLY ALA CYS SER THR CYS ALA GLY THR SEQRES 5 A 98 ILE THR SER GLY THR ILE ASP GLN SER ASP GLN SER PHE SEQRES 6 A 98 LEU ASP ASP ASP GLN ILE GLU ALA GLY TYR VAL LEU THR SEQRES 7 A 98 CYS VAL ALA TYR PRO THR SER ASP CYS THR ILE LYS THR SEQRES 8 A 98 HIS GLN GLU GLU GLY LEU TYR

HET FES A 99 4

HETNAM FES FE2/S2 (INORGANIC) CLUSTER

FORMUL 2 FES FE2 S2 FORMUL 3 HOH *42(H2 O)

HELIX 1 1 ILE A 26 GLU A 32 1 7 HELIX 2 2 ASP A 68 GLU A 72 1 5

SHEET 1 A 4 ILE A 14 ASP A 21 0 SHEET 2 A 4 TYR A 3 ASN A 9 -1 N LEU A 7 O GLU A 16 SHEET 3 A 4 ASP A 86 LYS A 90 1 N CYS A 87 O THR A 6 SHEET 4 A 4 ALA A 50 ILE A 53 -1 N THR A 52 O LYS A 90

LINK SG CYS A 41 FE1 FES A 99 1555 1555 2.28 LINK SG CYS A 46 FE1 FES A 99 1555 1555 2.26 LINK SG CYS A 49 FE2 FES A 99 1555 1555 2.26 LINK SG CYS A 79 FE2 FES A 99 1555 1555 2.27

SITE 1 AC1 9 TYR A 39 SER A 40 CYS A 41 ARG A 42 SITE 2 AC1 9 GLY A 44 CYS A 46 CYS A 49 LEU A 77 SITE 3 AC1 9 CYS A 79

CRYST1 62.320 28.510 108.080 90.00 90.00 90.00 C 2 2 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 0.016046 0.000000 0.000000 0.00000

SCALE2 0.000000 0.035075 0.000000 0.00000

SCALE3 0.000000 0.000000 0.009252 0.00000