Cytochrome b6-f complex iron-sulfur subunit 1 - Anabaena variabilis (strain ATCC 29413 / PCC 7937)

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Reviewed, UniProtKB/Swiss-Prot Q9L3P9 (UCRIA_ANAVT)

Last modified November 3, 2009. Version 61. History...

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Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

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Names and origin

Protein names

Recommended name:
    Cytochrome b6-f complex iron-sulfur subunit 1
    EC=1.10.99.1
Alternative name(s):
    Rieske iron-sulfur protein
    Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein
      Short name=ISP
      Short name=RISP

Gene names

Name:	petC
Ordered Locus Names:	Ava_0385

Organism

Anabaena variabilis (strain ATCC 29413 / PCC 7937) [Complete proteome] [HAMAP]

Taxonomic identifier

240292 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Nostocales › Nostocaceae › Anabaena

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Protein attributes

Sequence length	179 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

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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.
Catalytic activity	Plastoquinol-1 + 2 oxidized plastocyanin = plastoquinone + 2 reduced plastocyanin. HAMAP MF_01335
Cofactor	Binds 1 2Fe-2S cluster per subunit By similarity.
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.
Miscellaneous	The Rieske iron-sulfur protein is a high potential 2Fe-2S protein. HAMAP MF_01335
Sequence similarities	Contains 1 Rieske domain.

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Ontologies

Keywords
Biological process	Electron transport Transport
Cellular component	Membrane Thylakoid
Domain	Transmembrane
Ligand	2Fe-2S Iron Iron-sulfur Metal-binding
Molecular function	Oxidoreductase
PTM	Disulfide bond
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	electron transport chain Inferred from electronic annotation. Source: UniProtKB-KW photosynthesis Inferred from electronic annotation. Source: HAMAP transport Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-SubCell thylakoid membrane Inferred from electronic annotation. Source: InterPro
Molecular function	2 iron, 2 sulfur cluster binding Inferred from electronic annotation. Source: UniProtKB-KW electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity Inferred from electronic annotation. Source: HAMAP iron ion binding Inferred from electronic annotation. Source: UniProtKB-KW plastoquinol-plastocyanin reductase activity Inferred from electronic annotation. Source: HAMAP ubiquinol-cytochrome-c reductase activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

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Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Chain

1 – 179

179

Cytochrome b6-f complex iron-sulfur subunit 1 HAMAP MF_01335

PRO_0000127770

Regions

Transmembrane

21 – 43

Potential

Domain

61 – 162

102

Rieske

Sites

Metal binding

108

Iron-sulfur (2Fe-2S) By similarity

Metal binding

110

Iron-sulfur (2Fe-2S); via pros nitrogen By similarity

Metal binding

126

Iron-sulfur (2Fe-2S) By similarity

Metal binding

129

Iron-sulfur (2Fe-2S); via pros nitrogen By similarity

Amino acid modifications

Disulfide bond

113 ↔ 128

By similarity

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Sequences

Sequence

Length

Mass (Da)

Tools

Q9L3P9-1 [UniParc].

Last modified October 1, 2000. Version 1.
Checksum: FCBE0D679A099A94
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FASTA

179

19,238

        10         20         30         40         50         60 
MAQFSESVDV PDMGRRQFMN LLTFGTVTGV ALGALYPVVN YFIPPATGGA GGGTTAKDEL 

        70         80         90        100        110        120 
GNDVSVSKFL ESHNVGDRTL VQGLKGDPTY IVVESKEAIT DYGINAVCTH LGCVVPWNAA 

       130        140        150        160        170 
ENKFKCPCHG SQYDATGKVV RGPAPKSLAL SHAKTENDKI VLTPWTETDF RTGEEPWWS

« Hide

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References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"b6f complex of Anabaena variabilis." Arnold M. Submitted (OCT-2000) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. Strain: FD.
[2]	"Complete sequence of Anabaena variabilis ATCC 29413." Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T., Hammon N., Israni S., Pitluck S., Saunders E.H., Schmutz J., Larimer F., Land M., Kyrpides N., Mavrommatis K., Richardson P. Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

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Cross-references

Sequence databases
	AJ271819 Genomic DNA. Translation: CAB72244.1. CP000117 Genomic DNA. Translation: ABA20011.1.
RefSeq	YP_320906.1.
3D structure databases
HSSP	HSSP built from PDB template 1VF5 based on UniProtKB P83794.
SMR	Q9L3P9. Positions 12-178.
ModBase	Search...
Protein-protein interaction databases
STRING	Q9L3P9.
Genome annotation databases
GeneID	3682720.
GenomeReviews	Gene locus Ava_0385 in contig CP000117_GR.
KEGG	ava:Ava_0385.
NMPDR	fig\|240292.3.peg.1064.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q9L3P9.
OMA	YPVANYF.
Enzyme and pathway databases
BioCyc	AVAR240292:AVA_0385-MON.
Family and domain databases
HAMAP	MF_01335. [Tree]
InterPro	IPR014909. Cyt_b6-f_cplx_Fe-S_su. IPR017941. Rieske_2Fe-2S. IPR014349. Rieske_Fe-S_prot. IPR005805. Rieske_Fe-S_prot_C. [Graphical view]
Gene3D	G3DSA:2.102.10.10. Rieske_reg. 1 hit.
PANTHER	PTHR10134. Rieske. 1 hit.
Pfam	PF08802. CytB6-F_Fe-S. 1 hit. PF00355. Rieske. 1 hit. [Graphical view]
PRINTS	PR00162. RIESKE.
PROSITE	PS51296. RIESKE. 1 hit. [Graphical view]
ProtoNet	Search...

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Entry information

Entry name

UCRIA_ANAVT

Accession

Primary (citable) accession number: Q9L3P9
Secondary accession number(s): Q3MG75

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 5, 2005
Last sequence update:	October 1, 2000
Last modified:	November 3, 2009
This is version 61 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)

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Relevant documents

SIMILARITY comments

Index of protein domains and families

Names and origin

Protein attributes

General annotation (Comments)

Ontologies

Sequence annotation (Features)

Molecule processing

Regions

Sites

Amino acid modifications

Sequences

References

Cross-references

Sequence databases

3D structure databases

Protein-protein interaction databases

Genome annotation databases

Organism-specific databases

Phylogenomic databases

Enzyme and pathway databases

Family and domain databases

Entry information

Relevant documents