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Protein

Ubiquinol-cytochrome c reductase iron-sulfur subunit

Gene

petA

Organism
Blastochloris viridis (Rhodopseudomonas viridis)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Protein inferred from homologyi

Functioni

Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is a respiratory chain that generates an electrochemical potential coupled to ATP synthesis.

Catalytic activityi

Quinol + 2 ferricytochrome c = quinone + 2 ferrocytochrome c + 2 H+.

Cofactori

[2Fe-2S] clusterPROSITE-ProRule annotationNote: Binds 1 [2Fe-2S] cluster per subunit.PROSITE-ProRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi118 – 1181Iron-sulfur (2Fe-2S)PROSITE-ProRule annotation
Metal bindingi120 – 1201Iron-sulfur (2Fe-2S); via pros nitrogenPROSITE-ProRule annotation
Metal bindingi137 – 1371Iron-sulfur (2Fe-2S)PROSITE-ProRule annotation
Metal bindingi140 – 1401Iron-sulfur (2Fe-2S); via pros nitrogenPROSITE-ProRule annotation

GO - Molecular functioni

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Transport

Keywords - Ligandi

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

Names & Taxonomyi

Protein namesi
Recommended name:
Ubiquinol-cytochrome c reductase iron-sulfur subunit (EC:1.10.2.2)
Alternative name(s):
Rieske iron-sulfur protein
Short name:
RISP
Gene namesi
Name:petA
Synonyms:fbcF
OrganismiBlastochloris viridis (Rhodopseudomonas viridis)
Taxonomic identifieri1079 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhizobialesHyphomicrobiaceaeBlastochloris

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei14 – 3522HelicalSequence analysisAdd
BLAST

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cell membrane, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 179179Ubiquinol-cytochrome c reductase iron-sulfur subunitPRO_0000127765Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Disulfide bondi123 ↔ 139PROSITE-ProRule annotation

Keywords - PTMi

Disulfide bond

Interactioni

Subunit structurei

The main subunits of complex b-c1 are: cytochrome b, cytochrome c1 and the Rieske protein.

Structurei

3D structure databases

ProteinModelPortaliP81380.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini80 – 17394RieskePROSITE-ProRule annotationAdd
BLAST

Sequence similaritiesi

Contains 1 Rieske domain.PROSITE-ProRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3Di2.102.10.10. 1 hit.
InterProiIPR017941. Rieske_2Fe-2S.
IPR014349. Rieske_Fe-S_prot.
IPR005805. Rieske_Fe-S_prot_C.
IPR006311. TAT_signal.
IPR019546. TAT_signal_bac_arc.
IPR019470. Ubiq_cytC_Rdtase_Fe-S_su_TAT.
IPR006317. Ubiquinol_cyt_c_Rdtase_Fe-S-su.
[Graphical view]
PANTHERiPTHR10134. PTHR10134. 1 hit.
PfamiPF00355. Rieske. 1 hit.
PF10399. UCR_Fe-S_N. 1 hit.
[Graphical view]
PRINTSiPR00162. RIESKE.
SUPFAMiSSF50022. SSF50022. 1 hit.
TIGRFAMsiTIGR01416. Rieske_proteo. 1 hit.
TIGR01409. TAT_signal_seq. 1 hit.
PROSITEiPS51296. RIESKE. 1 hit.
PS51318. TAT. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P81380-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MASSDTAEAT RRDFLYVATA AVGAAGVAAV AWPFITQMNP DAATIAAGAP
60 70 80 90 100
IDIDISPVTE GQIVRVFWRG KPIFIRHRTA KEIQSEEAAD VGALIDPQPD
110 120 130 140 150
SARVKPGKAE WLVVYASCTH LGCIPLGHQG DWGGWFCPCH GSQYDASGRV
160 170
RKGPAPTNLP VPPYEFVDNT KIRIGAGVA
Length:179
Mass (Da):19,011
Last modified:July 15, 1999 - v2
Checksum:iFEE328E1637DC49C
GO

Sequence databases

PIRiJQ0345.

Cross-referencesi

Sequence databases

PIRiJQ0345.

3D structure databases

ProteinModelPortaliP81380.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di2.102.10.10. 1 hit.
InterProiIPR017941. Rieske_2Fe-2S.
IPR014349. Rieske_Fe-S_prot.
IPR005805. Rieske_Fe-S_prot_C.
IPR006311. TAT_signal.
IPR019546. TAT_signal_bac_arc.
IPR019470. Ubiq_cytC_Rdtase_Fe-S_su_TAT.
IPR006317. Ubiquinol_cyt_c_Rdtase_Fe-S-su.
[Graphical view]
PANTHERiPTHR10134. PTHR10134. 1 hit.
PfamiPF00355. Rieske. 1 hit.
PF10399. UCR_Fe-S_N. 1 hit.
[Graphical view]
PRINTSiPR00162. RIESKE.
SUPFAMiSSF50022. SSF50022. 1 hit.
TIGRFAMsiTIGR01416. Rieske_proteo. 1 hit.
TIGR01409. TAT_signal_seq. 1 hit.
PROSITEiPS51296. RIESKE. 1 hit.
PS51318. TAT. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Cloning and sequencing of the fbcF, B and C genes encoding the cytochrome b/c1 complex from Rhodopseudomonas viridis."
    Verbist J., Lang F., Gabellini N., Oesterhelt D.
    Mol. Gen. Genet. 219:445-452(1989) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    Strain: ATCC 19567 / DSM 133 / F.

Entry informationi

Entry nameiUCRI_BLAVI
AccessioniPrimary (citable) accession number: P81380
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 15, 1999
Last sequence update: July 15, 1999
Last modified: January 7, 2015
This is version 85 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Miscellaneous

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

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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 one 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.