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Q7VDC0 (UCRI_PROMA) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 81. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Cytochrome b6-f complex iron-sulfur subunit

EC=1.10.9.1
Alternative name(s):
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein
Short name=ISP
Short name=RISP
Rieske iron-sulfur protein
Gene names
Name:petC
Ordered Locus Names:Pro_0460
OrganismProchlorococcus marinus (strain SARG / CCMP1375 / SS120) [Reference proteome] [HAMAP]
Taxonomic identifier167539 [NCBI]
Taxonomic lineageBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus

Protein attributes

Sequence length178 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

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 By similarity. HAMAP-Rule MF_01335

Catalytic activity

Plastoquinol + 2 oxidized plastocyanin + 2 H+(Side 1) = plastoquinone + 2 reduced plastocyanin + 4 H+(Side 2). HAMAP-Rule MF_01335

Cofactor

Binds 1 2Fe-2S cluster per subunit By similarity. HAMAP-Rule MF_01335

Subunit structure

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 By similarity.

Subcellular location

Cellular thylakoid membrane; Single-pass membrane protein By similarity. Note: The transmembrane helix obliquely spans the membrane in one monomer, and its extrinsic C-terminal domain is part of the other monomer By similarity. HAMAP-Rule MF_01335

Miscellaneous

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

Sequence similarities

Contains 1 Rieske domain.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 178178Cytochrome b6-f complex iron-sulfur subunit HAMAP-Rule MF_01335
PRO_0000127777

Regions

Transmembrane20 – 4223Helical; Potential
Domain71 – 16191Rieske

Sites

Metal binding1071Iron-sulfur (2Fe-2S) By similarity
Metal binding1091Iron-sulfur (2Fe-2S); via pros nitrogen By similarity
Metal binding1251Iron-sulfur (2Fe-2S) By similarity
Metal binding1281Iron-sulfur (2Fe-2S); via pros nitrogen By similarity

Amino acid modifications

Disulfide bond112 ↔ 127 By similarity

Sequences

Sequence LengthMass (Da)Tools
Q7VDC0 [UniParc].

Last modified October 1, 2003. Version 1.
Checksum: 9D8AE11686AAEDF2

FASTA17818,784
        10         20         30         40         50         60 
MTQMSPSDVP SMGRRQFMNL LTFGTATGVA LGALYPVANF FMPLRAGGGT GGTTAKDELG 

        70         80         90        100        110        120 
NAVTATGWLS NHPAGDRSLV QGLKGDPTYL IVDGDAAIGN FGINAICTHL GCVVPWNSGA 

       130        140        150        160        170 
NKYICPCHGS QYDANGKVVR GPAPLSLALT HIDIDDDNVL VSQWTETDFR TGDKPWWA 

« Hide

References

[1]"Genome sequence of the cyanobacterium Prochlorococcus marinus SS120, a nearly minimal oxyphototrophic genome."
Dufresne A., Salanoubat M., Partensky F., Artiguenave F., Axmann I.M., Barbe V., Duprat S., Galperin M.Y., Koonin E.V., Le Gall F., Makarova K.S., Ostrowski M., Oztas S., Robert C., Rogozin I.B., Scanlan D.J., Tandeau de Marsac N., Weissenbach J. expand/collapse author list , Wincker P., Wolf Y.I., Hess W.R.
Proc. Natl. Acad. Sci. U.S.A. 100:10020-10025(2003) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: SARG / CCMP1375 / SS120.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AE017126 Genomic DNA. Translation: AAP99506.1.
RefSeqNP_874854.1. NC_005042.1.

3D structure databases

ProteinModelPortalQ7VDC0.
SMRQ7VDC0. Positions 8-177.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING167539.Pro0460.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAP99506; AAP99506; Pro_0460.
GeneID1461842.
KEGGpma:Pro_0460.
PATRIC23027541. VBIProMar8617_0471.

Phylogenomic databases

eggNOGCOG0723.
KOK02636.
OMAPWTETDF.
OrthoDBEOG6S52N7.

Enzyme and pathway databases

BioCycPMAR167539:GJN2-476-MONOMER.

Family and domain databases

Gene3D2.102.10.10. 1 hit.
HAMAPMF_01335. Cytb6_f_Rieske.
InterProIPR014909. 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]
PANTHERPTHR10134. PTHR10134. 1 hit.
PfamPF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view]
PRINTSPR00162. RIESKE.
SUPFAMSSF50022. SSF50022. 1 hit.
PROSITEPS51296. RIESKE. 1 hit.
PS51318. TAT. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameUCRI_PROMA
AccessionPrimary (citable) accession number: Q7VDC0
Entry history
Integrated into UniProtKB/Swiss-Prot: July 5, 2005
Last sequence update: October 1, 2003
Last modified: June 11, 2014
This is version 81 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families