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A2BPU5 (UCRI_PROMS) Reviewed, UniProtKB/Swiss-Prot

Last modified December 14, 2011. Version 45. 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:A9601_05181
OrganismProchlorococcus marinus (strain AS9601) [Complete proteome] [HAMAP]
Taxonomic identifier146891 [NCBI]
Taxonomic lineageBacteria › Cyanobacteria › Prochlorophytes › Prochlorococcaceae › Prochlorococcus

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 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 – 178178Cytochrome b6-f complex iron-sulfur subunit HAMAP MF_01335
PRO_0000298455

Regions

Transmembrane20 – 4223Helical; Potential
Domain65 – 16197Rieske

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
A2BPU5 [UniParc].

Last modified February 20, 2007. Version 1.
Checksum: CDFFF5349A309EFA

FASTA17818,938
        10         20         30         40         50         60 
MTQLSSNDVP SMGRRQFMNL LTFGTATGVA LGALYPVANY FMPLRAGGGG GGTSAKDELG 

        70         80         90        100        110        120 
NPITKTGWLA THQAGDRSLV QGLKGDPTYL IVNEGGEIGE FGLNAICTHL GCVVPWDSGA 

       130        140        150        160        170 
NKFICPCHGS QYDTNGKVVR GPAPLSLALA HVDIEDDAVL VKQWSETDFR TNENPWWA

« Hide

References

[1]"Patterns and implications of gene gain and loss in the evolution of Prochlorococcus."
Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S., Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M., Richardson P., Chisholm S.W.
PLoS Genet. 3:2515-2528(2007) [PubMed: 18159947] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: AS9601.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		CP000551 Genomic DNA. Translation: ABM69806.1.
RefSeqYP_001008913.1. NC_008816.1.

3D structure databases

ProteinModelPortalA2BPU5.
SMRA2BPU5. Positions 8-177.
ModBaseSearch...

Protein-protein interaction databases

STRINGA2BPU5.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID4717216.
GenomeReviewsGene locus A9601_05181 in contig CP000551_GR.
KEGGpmb:A9601_05181.
PATRIC22982505. VBIProMar75723_0516.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0723.
HOGENOMHBG668715.
OMAYPVANYF.
PhylomeDBA2BPU5.
ProtClustDBPRK13474.

Enzyme and pathway databases

BioCycPMAR146891:A9601_05181-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.
IPR006311. TAT_signal.
[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.
PS51318. TAT. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameUCRI_PROMS
AccessionPrimary (citable) accession number: A2BPU5
Entry history
Integrated into UniProtKB/Swiss-Prot: August 21, 2007
Last sequence update: February 20, 2007
Last modified: December 14, 2011
This is version 45 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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