ID   UCRI_SYNS3              Reviewed;         178 AA.
AC   Q0I872;
DT   21-AUG-2007, integrated into UniProtKB/Swiss-Prot.
DT   03-OCT-2006, sequence version 1.
DT   16-JUN-2009, entry version 28.
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=sync_2149;
OS   Synechococcus sp. (strain CC9311).
OC   Bacteria; Cyanobacteria; Chroococcales; Synechococcus.
OX   NCBI_TaxID=64471;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16938853; DOI=10.1073/pnas.0602963103;
RA   Palenik B., Ren Q., Dupont C.L., Myers G.S., Heidelberg J.F.,
RA   Badger J.H., Madupu R., Nelson W.C., Brinkac L.M., Dodson R.J.,
RA   Durkin A.S., Daugherty S.C., Sullivan S.A., Khouri H., Mohamoud Y.,
RA   Halpin R., Paulsen I.T.;
RT   "Genome sequence of Synechococcus CC9311: insights into adaptation to
RT   a coastal environment.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:13555-13559(2006).
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.
CC   -----------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution-NoDerivs License
CC   -----------------------------------------------------------------------
DR   EMBL; CP000435; ABI46186.1; -; Genomic_DNA.
DR   RefSeq; YP_731350.1; -.
DR   SMR; Q0I872; 12-177.
DR   GeneID; 4261130; -.
DR   GenomeReviews; CP000435_GR; sync_2149.
DR   KEGG; syg:sync_2149; -.
DR   TIGR; sync_2149; -.
DR   HOGENOM; Q0I872; -.
DR   OMA; Q0I872; YPVANYF.
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   InterPro; IPR006311; Tat.
DR   InterPro; IPR017909; Twin_arg_translocation_Tat.
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   TIGRFAMs; TIGR01409; TAT_signal_seq; 1.
DR   PROSITE; PS51296; RIESKE; 1.
DR   PROSITE; PS51318; TAT; 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    178       Cytochrome b6-f complex iron-sulfur
FT                                subunit.
FT                                /FTId=PRO_0000298462.
FT   TRANSMEM     20     42       Potential.
FT   DOMAIN       65    161       Rieske.
FT   METAL       107    107       Iron-sulfur (2Fe-2S) (By similarity).
FT   METAL       109    109       Iron-sulfur (2Fe-2S); via pros nitrogen
FT                                (By similarity).
FT   METAL       125    125       Iron-sulfur (2Fe-2S) (By similarity).
FT   METAL       128    128       Iron-sulfur (2Fe-2S); via pros nitrogen
FT                                (By similarity).
FT   DISULFID    112    127       By similarity.
SQ   SEQUENCE   178 AA;  18671 MW;  124BC4A267AD6D84 CRC64;
     MTQMPASDVP GMGRRQFMNL LTFGSVTGVA LGALYPVANY FIPPRAAGGG GGTSAKDELG
     NSVTASGWLS SHAEGDRSLV QGLKGDPTYL IVEGVDAIGS YGINAICTHL GCVVPWNSGA
     NKFMCPCHGS QYDATGKVVR GPAPLSLALA NVSVDNDNVF VSQWTETDFR TGEKPWWS
//