ID   UCRI_TRIEI              Reviewed;         179 AA.
AC   Q114L6;
DT   21-AUG-2007, integrated into UniProtKB/Swiss-Prot.
DT   22-AUG-2006, sequence version 1.
DT   16-JUN-2009, entry version 30.
DE   RecName: Full=Cytochrome b6-f complex iron-sulfur subunit;
DE            EC=1.10.99.1;
DE   AltName: Full=Rieske iron-sulfur protein;
DE   AltName: Full=Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein;
DE            Short=ISP;
DE            Short=RISP;
GN   Name=petC; OrderedLocusNames=Tery_1799;
OS   Trichodesmium erythraeum (strain IMS101).
OC   Bacteria; Cyanobacteria; Oscillatoriales; Trichodesmium.
OX   NCBI_TaxID=203124;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H.,
RA   Pitluck S., Kiss H., Munk A.C., Brettin T., Bruce D., Han C.,
RA   Tapia R., Gilna P., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Kim E., Richardson P.;
RT   "Complete sequence of Trichodesmium erythraeum IMS101.";
RL   Submitted (JUN-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Component of the cytochrome b6-f complex, which mediates
CC       electron transfer between photosystem II (PSII) and photosystem I
CC       (PSI), cyclic electron flow around PSI, and state transitions (By
CC       similarity).
CC   -!- CATALYTIC ACTIVITY: Plastoquinol-1 + 2 oxidized plastocyanin =
CC       plastoquinone + 2 reduced plastocyanin.
CC   -!- COFACTOR: Binds 1 2Fe-2S cluster per subunit (By similarity).
CC   -!- SUBUNIT: The 4 large subunits of the cytochrome b6-f complex are
CC       cytochrome b6, subunit IV (17 kDa polypeptide, petD), cytochrome f
CC       and the Rieske protein, while the 4 small subunits are petG, petL,
CC       petM and petN. The complex functions as a dimer (By similarity).
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Single-pass
CC       membrane protein (By similarity). Note=The transmembrane helix
CC       obliquely spans the membrane in one monomer, and its extrinsic C-
CC       terminal domain is part of the other monomer (By similarity).
CC   -!- MISCELLANEOUS: The Rieske iron-sulfur protein is a high potential
CC       2Fe-2S protein.
CC   -!- SIMILARITY: Contains 1 Rieske domain.
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DR   EMBL; CP000393; ABG51058.1; -; Genomic_DNA.
DR   RefSeq; YP_721531.1; -.
DR   GeneID; 4243781; -.
DR   GenomeReviews; CP000393_GR; Tery_1799.
DR   KEGG; ter:Tery_1799; -.
DR   NMPDR; fig|203124.1.peg.418; -.
DR   HOGENOM; Q114L6; -.
DR   OMA; Q114L6; YPVANYF.
DR   BioCyc; TERY203124:TERY_1799-MON; -.
DR   GO; GO:0016021; C:integral to membrane; IEA:UniProtKB-KW.
DR   GO; GO:0042651; C:thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0045158; F:electron transporter, transferring electron...; IEA:HAMAP.
DR   GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0009496; F:plastoquinol-plastocyanin reductase activity; IEA:HAMAP.
DR   GO; GO:0022900; P:electron transport chain; IEA:UniProtKB-KW.
DR   GO; GO:0015979; P:photosynthesis; IEA:HAMAP.
DR   GO; GO:0006810; P:transport; IEA:UniProtKB-KW.
DR   HAMAP; MF_01335; -; 1.
DR   InterPro; IPR014909; Cyt_b6-f_cplx_Fe-S_su.
DR   InterPro; IPR017941; Rieske_2Fe-2S.
DR   InterPro; IPR014349; Rieske_Fe-S_prot.
DR   Gene3D; G3DSA:2.102.10.10; Rieske_reg; 1.
DR   PANTHER; PTHR10134; Rieske; 1.
DR   Pfam; PF08802; CytB6-F_Fe-S; 1.
DR   Pfam; PF00355; Rieske; 1.
DR   PROSITE; PS51296; RIESKE; 1.
PE   3: Inferred from homology;
KW   2Fe-2S; Complete proteome; Disulfide bond; Electron transport; Iron;
KW   Iron-sulfur; Membrane; Metal-binding; Oxidoreductase; Thylakoid;
KW   Transmembrane; Transport.
FT   CHAIN         1    179       Cytochrome b6-f complex iron-sulfur
FT                                subunit.
FT                                /FTId=PRO_0000298469.
FT   TRANSMEM     21     43       Potential.
FT   DOMAIN       61    162       Rieske.
FT   METAL       108    108       Iron-sulfur (2Fe-2S) (By similarity).
FT   METAL       110    110       Iron-sulfur (2Fe-2S); via pros nitrogen
FT                                (By similarity).
FT   METAL       126    126       Iron-sulfur (2Fe-2S) (By similarity).
FT   METAL       129    129       Iron-sulfur (2Fe-2S); via pros nitrogen
FT                                (By similarity).
FT   DISULFID    113    128       By similarity.
SQ   SEQUENCE   179 AA;  19116 MW;  572CE261AE78F317 CRC64;
     MAQAEGTPDV PSMGRRQFMN LLTFGTVTGV ALGALYPVVN YFIPPSSGGS GGGVTAKDAL
     GNDIIVSEFL ANHNSGERTL AQGLKGDPTY VVIEGEQTLA EYGLNAVCTH LGCVVPWNGS
     ENKFICPCHG SQYDNTGKVV RGPAPLSLAL VHANVSDDKL VFTQWEETDF RTGEKPWWV
//