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Protein

Cytochrome b6-f complex iron-sulfur subunit

Gene

petC

Organism
Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS) (Chlorobium tepidum)
Status
Reviewed-Annotation score: -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.

Miscellaneous

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

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

GO - Biological processi

Keywordsi

Molecular functionOxidoreductase
Biological processElectron transport, Transport
Ligand2Fe-2S, Iron, Iron-sulfur, Metal-binding

Enzyme and pathway databases

BioCyciCTEP194439:G1FZE-319-MONOMER

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
OrganismiChlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS) (Chlorobium tepidum)
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

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
SMRiQ9F722
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

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

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG4105DQV Bacteria
COG0723 LUCA
HOGENOMiHOG000148904
KOiK02636
OMAiPCHGAKY
OrthoDBiPOG091H05QX

Family and domain databases

Gene3Di2.102.10.10, 1 hit
InterProiView protein in InterPro
IPR014909 Cyt_b6-f_cplx_Fe-S_su
IPR023960 Cyt_b6_f_Rieske
IPR017941 Rieske_2Fe-2S
IPR036922 Rieske_2Fe-2S_sf
IPR014349 Rieske_Fe-S_prot
IPR005805 Rieske_Fe-S_prot_C
PANTHERiPTHR10134 PTHR10134, 2 hits
PTHR10134:SF5 PTHR10134:SF5, 2 hits
PfamiView protein in Pfam
PF08802 CytB6-F_Fe-S, 1 hit
PF00355 Rieske, 1 hit
PRINTSiPR00162 RIESKE
SUPFAMiSSF50022 SSF50022, 1 hit
PROSITEiView protein in PROSITE
PS51296 RIESKE, 1 hit

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
PATRICifig|194439.7.peg.292

Similar proteinsi

Entry informationi

Entry nameiUCRI_CHLTE
AccessioniPrimary (citable) accession number: Q9F722
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 27, 2001
Last sequence update: January 23, 2007
Last modified: March 28, 2018
This is version 123 of the entry and version 4 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome
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Main funding by: National Institutes of Health