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Q31NV7 (UCRI_SYNE7) Reviewed, UniProtKB/Swiss-Prot

Last modified January 25, 2012. Version 49. 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=1.10.99.1
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:Synpcc7942_1232
OrganismSynechococcus elongatus (strain PCC 7942) (Anacystis nidulans R2) [Complete proteome] [HAMAP]
Taxonomic identifier1140 [NCBI]
Taxonomic lineageBacteria › Cyanobacteria › Chroococcales › Synechococcus

Protein attributes

Sequence length179 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 MF_01335

Catalytic activity

Plastoquinol-1 + 2 oxidized plastocyanin = plastoquinone + 2 reduced plastocyanin. HAMAP MF_01335

Cofactor

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

Miscellaneous

The Rieske iron-sulfur protein is a high potential 2Fe-2S protein. HAMAP MF_01335

Sequence similarities

Contains 1 Rieske domain.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 179179Cytochrome b6-f complex iron-sulfur subunit HAMAP MF_01335
PRO_0000298467

Regions

Transmembrane21 – 4323Helical; Potential
Domain61 – 162102Rieske

Sites

Metal binding1081Iron-sulfur (2Fe-2S) By similarity
Metal binding1101Iron-sulfur (2Fe-2S); via pros nitrogen By similarity
Metal binding1261Iron-sulfur (2Fe-2S) By similarity
Metal binding1291Iron-sulfur (2Fe-2S); via pros nitrogen By similarity

Amino acid modifications

Disulfide bond113 ↔ 128 By similarity

Sequences

Sequence LengthMass (Da)Tools
Q31NV7 [UniParc].

Last modified December 6, 2005. Version 1.
Checksum: EC139A4D25CAA047

FASTA17918,834
        10         20         30         40         50         60 
MTQVSGASDV PSMGRRQFMN LLTFGSVTGV ALGALYPVVN YFIPPSSGGS GGGVAAKDAL 

        70         80         90        100        110        120 
GNDVVLSKFL ADHNVGDRTL VQGLKGDPTY LVVESSEAIG DYGINAVCTH LGCVVPWNAS 

       130        140        150        160        170 
ENKFKCPCHG SQYDATGKVV RGPAPLSLAL AHVSVTDDKV FLSPWTETDF RTGDNPWWA

« Hide

References

[1]"Complete sequence of chromosome 1 of Synechococcus elongatus PCC 7942."
US DOE Joint Genome Institute
Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T., Hammon N., Israni S., Pitluck S., Schmutz J., Larimer F., Land M., Kyrpides N., Lykidis A., Richardson P.
Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: PCC 7942.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		CP000100 Genomic DNA. Translation: ABB57262.1.
RefSeqYP_400249.1. NC_007604.1.

3D structure databases

HSSPHSSP built from PDB template 2D2C based on UniProtKB P83794.
ProteinModelPortalQ31NV7.
SMRQ31NV7. Positions 9-178.
ModBaseSearch...

Protein-protein interaction databases

STRINGQ31NV7.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID3773520.
GenomeReviewsGene locus Synpcc7942_1232 in contig CP000100_GR.
KEGGsyf:Synpcc7942_1232.
PATRIC23787773. VBISynElo51371_1414.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0723.
HOGENOMHBG668715.
PhylomeDBQ31NV7.
ProtClustDBPRK13474.

Enzyme and pathway databases

BioCycMetaCyc:SYNPCC7942_1232-MONOMER.
SYNEL:SYNPCC7942_1232-MONOMER.

Family and domain databases

HAMAPMF_01335. Cytb6_f_Rieske.
[Tree]
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.
[Graphical view]
Gene3DG3DSA:2.102.10.10. Rieske_reg. 1 hit.
KOK02636.
PANTHERPTHR10134. Rieske. 1 hit.
PfamPF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view]
PRINTSPR00162. RIESKE.
SUPFAMSSF50022. Rieske_dom. 1 hit.
PROSITEPS51296. RIESKE. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameUCRI_SYNE7
AccessionPrimary (citable) accession number: Q31NV7
Entry history
Integrated into UniProtKB/Swiss-Prot: August 21, 2007
Last sequence update: December 6, 2005
Last modified: January 25, 2012
This is version 49 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

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