UCRIA_NOSS1
ID UCRIA_NOSS1 Reviewed; 179 AA.
AC Q93SX0;
DT 05-JUL-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-DEC-2001, sequence version 1.
DT 03-AUG-2022, entry version 131.
DE RecName: Full=Cytochrome b6-f complex iron-sulfur subunit 1 {ECO:0000255|HAMAP-Rule:MF_01335};
DE EC=7.1.1.6 {ECO:0000255|HAMAP-Rule:MF_01335};
DE AltName: Full=Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein 1 {ECO:0000255|HAMAP-Rule:MF_01335};
DE Short=ISP 1 {ECO:0000255|HAMAP-Rule:MF_01335};
DE Short=RISP 1 {ECO:0000255|HAMAP-Rule:MF_01335};
DE AltName: Full=Rieske iron-sulfur protein 1 {ECO:0000255|HAMAP-Rule:MF_01335};
GN Name=petC1 {ECO:0000255|HAMAP-Rule:MF_01335}; OrderedLocusNames=all2453;
OS Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX NCBI_TaxID=103690;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Arnold M.;
RT "b6f complex of Anabaena sp; possible function of alternative Rieske-FeS
RT proteins.";
RL Submitted (MAY-2001) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT "Complete genomic sequence of the filamentous nitrogen-fixing
RT cyanobacterium Anabaena sp. strain PCC 7120.";
RL DNA Res. 8:205-213(2001).
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:0000255|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; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01335};
CC -!- COFACTOR:
CC Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01335};
CC Note=Binds 1 [2Fe-2S] cluster per subunit. {ECO:0000255|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:0000255|HAMAP-
CC Rule:MF_01335}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC Rule:MF_01335}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_01335}. Note=The transmembrane helix obliquely spans the
CC membrane in one monomer, and its extrinsic C-terminal domain is part of
CC the other monomer. {ECO:0000255|HAMAP-Rule:MF_01335}.
CC -!- MISCELLANEOUS: The Rieske iron-sulfur protein is a high potential 2Fe-
CC 2S protein.
CC -!- SIMILARITY: Belongs to the Rieske iron-sulfur protein family.
CC {ECO:0000255|HAMAP-Rule:MF_01335}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; AJ319646; CAC39604.1; -; Genomic_DNA.
DR EMBL; BA000019; BAB74152.1; -; Genomic_DNA.
DR PIR; AF2112; AF2112.
DR RefSeq; WP_010996609.1; NZ_RSCN01000002.1.
DR PDB; 2ZT9; X-ray; 3.00 A; D=1-179.
DR PDB; 4H44; X-ray; 2.70 A; D=1-179.
DR PDB; 4OGQ; X-ray; 2.50 A; D=1-179.
DR PDBsum; 2ZT9; -.
DR PDBsum; 4H44; -.
DR PDBsum; 4OGQ; -.
DR AlphaFoldDB; Q93SX0; -.
DR SMR; Q93SX0; -.
DR DIP; DIP-61003N; -.
DR IntAct; Q93SX0; 1.
DR STRING; 103690.17131545; -.
DR TCDB; 3.D.3.5.6; the proton-translocating quinol:cytochrome c reductase (qcr) superfamily.
DR EnsemblBacteria; BAB74152; BAB74152; BAB74152.
DR KEGG; ana:all2453; -.
DR eggNOG; COG0723; Bacteria.
DR OMA; KGDPTYI; -.
DR OrthoDB; 1632945at2; -.
DR BRENDA; 7.1.1.6; 8113.
DR EvolutionaryTrace; Q93SX0; -.
DR Proteomes; UP000002483; Chromosome.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0031676; C:plasma membrane-derived 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 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 Gene3D; 2.102.10.10; -; 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; PTHR10134; 1.
DR Pfam; PF00355; Rieske; 1.
DR PRINTS; PR00162; RIESKE.
DR SUPFAM; SSF50022; SSF50022; 1.
DR PROSITE; PS51296; RIESKE; 1.
PE 1: Evidence at protein level;
KW 2Fe-2S; 3D-structure; Disulfide bond; Electron transport; Iron;
KW Iron-sulfur; Membrane; Metal-binding; Reference proteome; Thylakoid;
KW Translocase; Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..179
FT /note="Cytochrome b6-f complex iron-sulfur subunit 1"
FT /id="PRO_0000127767"
FT TRANSMEM 21..43
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01335"
FT DOMAIN 61..162
FT /note="Rieske"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01335"
FT BINDING 108
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01335"
FT BINDING 110
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01335"
FT BINDING 126
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01335"
FT BINDING 129
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01335"
FT DISULFID 113..128
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01335"
FT HELIX 13..42
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 50..52
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 66..70
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 79..82
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 84..86
FT /evidence="ECO:0007829|PDB:4H44"
FT STRAND 88..91
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 101..105
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 109..111
FT /evidence="ECO:0007829|PDB:4OGQ"
FT TURN 119..122
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 123..125
FT /evidence="ECO:0007829|PDB:4OGQ"
FT TURN 127..129
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 135..137
FT /evidence="ECO:0007829|PDB:4H44"
FT STRAND 139..143
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 150..156
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 159..164
FT /evidence="ECO:0007829|PDB:4OGQ"
FT TURN 170..172
FT /evidence="ECO:0007829|PDB:4OGQ"
SQ SEQUENCE 179 AA; 19198 MW; 412E1D66967886E7 CRC64;
MAQFSESVDV PDMGRRQFMN LLTFGTVTGV ALGALYPVVN YFIPPAAGGA GGGTTAKDEL
GNDVSVSKFL ESHNVGDRTL VQGLKGDPTY IVVESKEAIT DYGINAVCTH LGCVVPWNAA
ENKFKCPCHG SQYDATGKVV RGPAPKSLAL SHAKTENDKI VLTSWTETDF RTGEEPWWS
