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Protein

Cytochrome b6-f complex iron-sulfur subunit

Gene

petC

Organism
Prochlorococcus marinus (strain NATL1A)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions.UniRule annotation

Catalytic activityi

Plastoquinol + 2 oxidized plastocyanin + 2 H+(Side 1) = plastoquinone + 2 reduced plastocyanin + 4 H+(Side 2).UniRule annotation

Cofactori

[2Fe-2S] clusterUniRule annotationNote: Binds 1 [2Fe-2S] cluster per subunit.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi107 – 1071Iron-sulfur (2Fe-2S)UniRule annotation
Metal bindingi109 – 1091Iron-sulfur (2Fe-2S); via pros nitrogenUniRule annotation
Metal bindingi125 – 1251Iron-sulfur (2Fe-2S)UniRule annotation
Metal bindingi128 – 1281Iron-sulfur (2Fe-2S); via pros nitrogenUniRule annotation

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Transport

Keywords - Ligandi

2Fe-2S, Iron, Iron-sulfur, Metal-binding

Enzyme and pathway databases

BioCyciPMAR167555:GI3K-532-MONOMER.

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome b6-f complex iron-sulfur subunitUniRule annotation (EC:1.10.9.1UniRule annotation)
Alternative name(s):
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur proteinUniRule annotation
Short name:
ISPUniRule annotation
Short name:
RISPUniRule annotation
Rieske iron-sulfur proteinUniRule annotation
Gene namesi
Name:petCUniRule annotation
Ordered Locus Names:NATL1_05171
OrganismiProchlorococcus marinus (strain NATL1A)
Taxonomic identifieri167555 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus
ProteomesiUP000002592 Componenti: Chromosome

Subcellular locationi

  • Cellular thylakoid membrane UniRule annotation; Single-pass membrane protein UniRule annotation

  • Note: The transmembrane helix obliquely spans the membrane in one monomer, and its extrinsic C-terminal domain is part of the other monomer.UniRule annotation

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei20 – 4223HelicalUniRule annotationAdd
BLAST

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 178178Cytochrome b6-f complex iron-sulfur subunitPRO_0000298460Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Disulfide bondi112 ↔ 127UniRule annotation

Keywords - PTMi

Disulfide bond

Interactioni

Subunit structurei

The 4 large subunits of the cytochrome b6-f complex are cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and PetN. The complex functions as a dimer.UniRule annotation

Protein-protein interaction databases

STRINGi167555.NATL1_05171.

Structurei

3D structure databases

ProteinModelPortaliA2C0R9.
SMRiA2C0R9. Positions 8-177.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini71 – 16191RieskeUniRule annotationAdd
BLAST

Sequence similaritiesi

Contains 1 Rieske domain.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiCOG0723.
HOGENOMiHOG000255192.
KOiK02636.
OMAiKGDPTYI.
OrthoDBiEOG6S52N7.

Family and domain databases

Gene3Di2.102.10.10. 1 hit.
HAMAPiMF_01335. Cytb6_f_Rieske.
InterProiIPR014909. Cyt_b6-f_cplx_Fe-S_su.
IPR023960. Cyt_b6_f_Rieske.
IPR017941. Rieske_2Fe-2S.
IPR014349. Rieske_Fe-S_prot.
IPR005805. Rieske_Fe-S_prot_C.
IPR006311. TAT_signal.
[Graphical view]
PANTHERiPTHR10134. PTHR10134. 1 hit.
PfamiPF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view]
PRINTSiPR00162. RIESKE.
SUPFAMiSSF50022. SSF50022. 1 hit.
PROSITEiPS51296. RIESKE. 1 hit.
PS51318. TAT. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

A2C0R9-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTQMTTADVP SMGRRQFMNL LTFGTVTGVA LGALYPVAQY FTPYRAGGGG
60 70 80 90 100
GGTNAKDELG NNVSASGWLS THPVGDRSLV QGLKGDPTYL IVEGEDAITS
110 120 130 140 150
YGINAICTHL GCVVPWNSGA NKYMCPCHGS QYDSTGKVVR GPAPLSLAIA
160 170
HVSIEDDQVL VSQWTETDFR TGTDPWWG
Length:178
Mass (Da):18,904
Last modified:February 20, 2007 - v1
Checksum:iA959F473190880E7
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000553 Genomic DNA. Translation: ABM75079.1.
RefSeqiWP_011294427.1. NC_008819.1.

Genome annotation databases

EnsemblBacteriaiABM75079; ABM75079; NATL1_05171.
KEGGipme:NATL1_05171.
PATRICi23018589. VBIProMar31285_0528.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000553 Genomic DNA. Translation: ABM75079.1.
RefSeqiWP_011294427.1. NC_008819.1.

3D structure databases

ProteinModelPortaliA2C0R9.
SMRiA2C0R9. Positions 8-177.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi167555.NATL1_05171.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABM75079; ABM75079; NATL1_05171.
KEGGipme:NATL1_05171.
PATRICi23018589. VBIProMar31285_0528.

Phylogenomic databases

eggNOGiCOG0723.
HOGENOMiHOG000255192.
KOiK02636.
OMAiKGDPTYI.
OrthoDBiEOG6S52N7.

Enzyme and pathway databases

BioCyciPMAR167555:GI3K-532-MONOMER.

Family and domain databases

Gene3Di2.102.10.10. 1 hit.
HAMAPiMF_01335. Cytb6_f_Rieske.
InterProiIPR014909. Cyt_b6-f_cplx_Fe-S_su.
IPR023960. Cyt_b6_f_Rieske.
IPR017941. Rieske_2Fe-2S.
IPR014349. Rieske_Fe-S_prot.
IPR005805. Rieske_Fe-S_prot_C.
IPR006311. TAT_signal.
[Graphical view]
PANTHERiPTHR10134. PTHR10134. 1 hit.
PfamiPF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view]
PRINTSiPR00162. RIESKE.
SUPFAMiSSF50022. SSF50022. 1 hit.
PROSITEiPS51296. RIESKE. 1 hit.
PS51318. TAT. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: NATL1A.

Entry informationi

Entry nameiUCRI_PROM1
AccessioniPrimary (citable) accession number: A2C0R9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 21, 2007
Last sequence update: February 20, 2007
Last modified: July 22, 2015
This is version 71 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Miscellaneous

The Rieske iron-sulfur protein is a high potential 2Fe-2S protein.

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.