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Protein

Cytochrome b6-f complex iron-sulfur subunit

Gene

petC

Organism
Chlorobium tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Component of the green S-bacteria bc-complex which consists of the Rieske protein and cytochrome b subunit and which appears to lack a cytochrome c1-equivalent. This complex has a comparatively low redox potential.

Catalytic activityi

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

Cofactori

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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi124Iron-sulfur (2Fe-2S)PROSITE-ProRule annotation1
Metal bindingi126Iron-sulfur (2Fe-2S); via pros nitrogenPROSITE-ProRule annotation1
Metal bindingi142Iron-sulfur (2Fe-2S)PROSITE-ProRule annotation1
Metal bindingi145Iron-sulfur (2Fe-2S); via pros nitrogenPROSITE-ProRule annotation1

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:
Cytochrome b6-f complex iron-sulfur subunit (EC:1.10.9.1)
Alternative name(s):
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein
Rieske iron-sulfur protein
Short name:
ISP
Short name:
RISP
Gene namesi
Name:petC
Ordered Locus Names:CT0302
OrganismiChlorobium tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS)
Taxonomic identifieri194439 [NCBI]
Taxonomic lineageiBacteriaChlorobiChlorobiaChlorobialesChlorobiaceaeChlorobaculum
Proteomesi
  • UP000001007 Componenti: Chromosome

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei53 – 73HelicalSequence analysisAdd BLAST21
Transmembranei114 – 134HelicalSequence analysisAdd BLAST21

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cell inner membrane, Cell membrane, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemovedBy similarity
ChainiPRO_00001277732 – 181Cytochrome b6-f complex iron-sulfur subunitAdd BLAST180

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi129 ↔ 144PROSITE-ProRule annotation

Keywords - PTMi

Disulfide bond

Proteomic databases

PRIDEiQ9F722.

Interactioni

Protein-protein interaction databases

STRINGi194439.CT0302.

Structurei

3D structure databases

ProteinModelPortaliQ9F722.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini85 – 178RieskePROSITE-ProRule annotationAdd BLAST94

Sequence similaritiesi

Contains 1 Rieske domain.PROSITE-ProRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG4105DQV. Bacteria.
COG0723. LUCA.
HOGENOMiHOG000148904.
KOiK02636.
OMAiCHGAKYQ.
OrthoDBiPOG091H05QX.

Family and domain databases

Gene3Di2.102.10.10. 1 hit.
InterProiIPR014909. Cyt_b6-f_cplx_Fe-S_su.
IPR017941. Rieske_2Fe-2S.
IPR005805. Rieske_Fe-S_prot_C.
[Graphical view]
PfamiPF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view]
PRINTSiPR00162. RIESKE.
SUPFAMiSSF50022. SSF50022. 1 hit.
PROSITEiPS51296. RIESKE. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q9F722-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAQTGNFKSP ARMSSLGQGA APASAGAVTG GKPREEGLKG VDFERRGFLQ
60 70 80 90 100
KIVGGVGAVV AVSTLYPVVR YIVPPAKKIK IVNELAVGPA SDVPNGTGKI
110 120 130 140 150
YQFNDDKVIV VNHGGSLTAV SAICTHLGCL VHWDEAADMI ACPCHGAKYT
160 170 180
QDGKIISGPQ PLPLKQYKVK IEDGKIVVSI A
Length:181
Mass (Da):18,864
Last modified:January 23, 2007 - v4
Checksum:i487FB49275EC289B
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti68V → F in AAG12194 (PubMed:10976061).Curated1
Sequence conflicti150T → R in AAG12194 (PubMed:10976061).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF287480 Genomic DNA. Translation: AAG12194.1.
AE006470 Genomic DNA. Translation: AAM71548.1.
RefSeqiNP_661206.1. NC_002932.3.
WP_010931994.1. NC_002932.3.

Genome annotation databases

EnsemblBacteriaiAAM71548; AAM71548; CT0302.
GeneIDi1007962.
KEGGicte:CT0302.
PATRICi21398719. VBIChlTep116050_0292.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF287480 Genomic DNA. Translation: AAG12194.1.
AE006470 Genomic DNA. Translation: AAM71548.1.
RefSeqiNP_661206.1. NC_002932.3.
WP_010931994.1. NC_002932.3.

3D structure databases

ProteinModelPortaliQ9F722.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi194439.CT0302.

Proteomic databases

PRIDEiQ9F722.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAM71548; AAM71548; CT0302.
GeneIDi1007962.
KEGGicte:CT0302.
PATRICi21398719. VBIChlTep116050_0292.

Phylogenomic databases

eggNOGiENOG4105DQV. Bacteria.
COG0723. LUCA.
HOGENOMiHOG000148904.
KOiK02636.
OMAiCHGAKYQ.
OrthoDBiPOG091H05QX.

Family and domain databases

Gene3Di2.102.10.10. 1 hit.
InterProiIPR014909. Cyt_b6-f_cplx_Fe-S_su.
IPR017941. Rieske_2Fe-2S.
IPR005805. Rieske_Fe-S_prot_C.
[Graphical view]
PfamiPF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view]
PRINTSiPR00162. RIESKE.
SUPFAMiSSF50022. SSF50022. 1 hit.
PROSITEiPS51296. RIESKE. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiUCRI_CHLTE
AccessioniPrimary (citable) accession number: Q9F722
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 27, 2001
Last sequence update: January 23, 2007
Last modified: November 2, 2016
This is version 115 of the entry and version 4 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.

Keywords - Technical termi

Complete proteome, Reference proteome

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.