ID A0A1E5QER9_9CYAN Unreviewed; 179 AA.
AC A0A1E5QER9;
DT 18-JAN-2017, integrated into UniProtKB/TrEMBL.
DT 18-JAN-2017, sequence version 1.
DT 27-MAR-2024, entry version 30.
DE RecName: Full=Cytochrome b6-f complex iron-sulfur subunit {ECO:0000256|HAMAP-Rule:MF_01335};
DE EC=7.1.1.6 {ECO:0000256|HAMAP-Rule:MF_01335};
DE AltName: Full=Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein {ECO:0000256|HAMAP-Rule:MF_01335};
DE Short=ISP {ECO:0000256|HAMAP-Rule:MF_01335};
DE Short=RISP {ECO:0000256|HAMAP-Rule:MF_01335};
DE AltName: Full=Rieske iron-sulfur protein {ECO:0000256|HAMAP-Rule:MF_01335};
GN Name=petC {ECO:0000256|HAMAP-Rule:MF_01335};
GN ORFNames=BH720_21450 {ECO:0000313|EMBL:OEJ73118.1};
OS Desertifilum tharense IPPAS B-1220.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Desertifilales; Desertifilaceae;
OC Desertifilum.
OX NCBI_TaxID=1781255 {ECO:0000313|EMBL:OEJ73118.1, ECO:0000313|Proteomes:UP000095472};
RN [1] {ECO:0000313|EMBL:OEJ73118.1, ECO:0000313|Proteomes:UP000095472}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IPPAS B-1220 {ECO:0000313|EMBL:OEJ73118.1,
RC ECO:0000313|Proteomes:UP000095472};
RA Sinetova M.A., Bolakhan K., Zayadan B.K., Mironov K.S., Ustinova V.,
RA Kupriyanova E.V., Sidorov R.A., Skrypnik A.N., Gogoleva N.E., Gogolev Y.V.,
RA Los D.A.;
RT "Draft genome of thermotolerant cyanobacterium Desertifilum sp. strain
RT IPPAS B-1220.";
RL Submitted (SEP-2016) 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.
CC {ECO:0000256|HAMAP-Rule:MF_01335}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a plastoquinol + 2 H(+)(in) + 2 oxidized [plastocyanin] = a
CC plastoquinone + 4 H(+)(out) + 2 reduced [plastocyanin];
CC Xref=Rhea:RHEA:22148, Rhea:RHEA-COMP:9561, Rhea:RHEA-COMP:9562,
CC Rhea:RHEA-COMP:10039, Rhea:RHEA-COMP:10040, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:17757, ChEBI:CHEBI:29036, ChEBI:CHEBI:49552,
CC ChEBI:CHEBI:62192; EC=7.1.1.6;
CC Evidence={ECO:0000256|ARBA:ARBA00000603, ECO:0000256|HAMAP-
CC Rule:MF_01335};
CC -!- COFACTOR:
CC Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01335};
CC Note=Binds 1 [2Fe-2S] cluster per subunit. {ECO:0000256|HAMAP-
CC Rule:MF_01335};
CC -!- SUBUNIT: The 4 large subunits of the cytochrome b6-f complex are
CC cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and
CC the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and
CC PetN. The complex functions as a dimer. {ECO:0000256|HAMAP-
CC Rule:MF_01335}.
CC -!- MISCELLANEOUS: The Rieske iron-sulfur protein is a high potential 2Fe-
CC 2S protein. {ECO:0000256|HAMAP-Rule:MF_01335}.
CC -!- SIMILARITY: Belongs to the Rieske iron-sulfur protein family.
CC {ECO:0000256|HAMAP-Rule:MF_01335}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:OEJ73118.1}.
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DR EMBL; MJGC01000099; OEJ73118.1; -; Genomic_DNA.
DR RefSeq; WP_069969259.1; NZ_MJGC01000099.1.
DR AlphaFoldDB; A0A1E5QER9; -.
DR STRING; 1781255.BH720_21450; -.
DR OrthoDB; 9767869at2; -.
DR Proteomes; UP000095472; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProt.
DR GO; GO:0043231; C:intracellular membrane-bounded organelle; IEA:UniProt.
DR GO; GO:0016020; C:membrane; IEA:UniProtKB-KW.
DR GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0045158; F:electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0009496; F:plastoquinol--plastocyanin reductase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR CDD; cd03471; Rieske_cytochrome_b6f; 1.
DR Gene3D; 2.102.10.10; Rieske [2Fe-2S] iron-sulphur domain; 1.
DR Gene3D; 1.20.5.700; Single helix bin; 1.
DR HAMAP; MF_01335; Cytb6_f_Rieske; 1.
DR InterPro; IPR023960; Cyt_b6_f_Rieske.
DR InterPro; IPR017941; Rieske_2Fe-2S.
DR InterPro; IPR036922; Rieske_2Fe-2S_sf.
DR InterPro; IPR014349; Rieske_Fe-S_prot.
DR InterPro; IPR005805; Rieske_Fe-S_prot_C.
DR PANTHER; PTHR10134; CYTOCHROME B-C1 COMPLEX SUBUNIT RIESKE, MITOCHONDRIAL; 1.
DR PANTHER; PTHR10134:SF50; CYTOCHROME B6-F COMPLEX IRON-SULFUR SUBUNIT, CHLOROPLASTIC; 1.
DR Pfam; PF00355; Rieske; 1.
DR PRINTS; PR00162; RIESKE.
DR SUPFAM; SSF50022; ISP domain; 1.
DR PROSITE; PS51296; RIESKE; 1.
PE 3: Inferred from homology;
KW 2Fe-2S {ECO:0000256|ARBA:ARBA00022714, ECO:0000256|HAMAP-Rule:MF_01335};
KW Disulfide bond {ECO:0000256|ARBA:ARBA00023157};
KW Electron transport {ECO:0000256|ARBA:ARBA00022982, ECO:0000256|HAMAP-
KW Rule:MF_01335};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_01335};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_01335};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|HAMAP-Rule:MF_01335};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01335}; Reference proteome {ECO:0000313|Proteomes:UP000095472};
KW Translocase {ECO:0000256|ARBA:ARBA00022967, ECO:0000256|HAMAP-
KW Rule:MF_01335};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|HAMAP-
KW Rule:MF_01335};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, ECO:0000256|HAMAP-
KW Rule:MF_01335};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|HAMAP-Rule:MF_01335}.
FT TRANSMEM 21..39
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01335"
FT DOMAIN 61..162
FT /note="Rieske"
FT /evidence="ECO:0000259|PROSITE:PS51296"
SQ SEQUENCE 179 AA; 19081 MW; 1EEBCA75F5CE5B8C CRC64;
MAQVSGSADV PNMGRRQFMN LLTFGAVTGT ALGALYPVVK YFIPPSSGGT GGGVTAKDAL
GNDIQVSEFL DTHNVGDRML SQGLKGDPTY LIVDADKTLE SYGLNAVCTH LGCVVPWNGG
ENKFICPCHG SQYDNTGKVV RGPAPLSLAL VHAEVSDDKV VFTPWTETDF RTGEDPWWS
//
