Cytochrome b6-f complex iron-sulfur subunit 1 - Synechocystis sp. (strain PCC 6803 / Kazusa)

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P74714 (UCRIA_SYNY3) Reviewed, UniProtKB/Swiss-Prot

Last modified January 25, 2012. Version 87. History...

Clusters with 100%, 90%, 50% identity |

Documents (2) |

Third-party data

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Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·Documents Customize order

Names and origin

Protein names

Recommended name:
Cytochrome b6-f complex iron-sulfur subunit 1
EC=1.10.99.1

Alternative name(s):
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein 1
Short name=ISP 1
Short name=RISP 1
Rieske iron-sulfur protein 1

Gene names

Name:	petC1
Ordered Locus Names:	slr1185

Organism

Synechocystis sp. (strain PCC 6803 / Kazusa)

Taxonomic identifier

1111708 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Chroococcales › Synechocystis

Protein attributes

Sequence length	178 AA.
Sequence status	Complete.
Protein existence	Inferred 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.

Ontologies

Keywords
Biological process	Electron transport Transport
Cellular component	Membrane Thylakoid
Domain	Transmembrane Transmembrane helix
Ligand	2Fe-2S Iron Iron-sulfur Metal-binding
Molecular function	Oxidoreductase
PTM	Disulfide bond
Technical term	Complete proteome Reference proteome
Gene Ontology (GO)
Biological process	electron transport chain Inferred from electronic annotation. Source: UniProtKB-KW photosynthesis Inferred from electronic annotation. Source: InterPro
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW thylakoid membrane Inferred from electronic annotation. Source: UniProtKB-SubCell
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: InterPro metal ion binding Inferred from electronic annotation. Source: UniProtKB-KW plastoquinol-plastocyanin reductase activity Inferred from electronic annotation. Source: EC ubiquinol-cytochrome-c reductase activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Chain

1 – 178

178

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

PRO_0000127784

Regions

Transmembrane

17 – 36

Helical; Potential

Domain

61 – 161

101

Rieske

Sites

Metal binding

107

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

Metal binding

109

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

Metal binding

125

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

Metal binding

128

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

Amino acid modifications

Disulfide bond

112 ↔ 127

By similarity

Sequences

Sequence

Length

Mass (Da)

Tools

P74714 [UniParc].

Last modified February 1, 1997. Version 1.
Checksum: 6AFF9F4195A61956
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FASTA

178

18,685

        10         20         30         40         50         60 
MDNTQAIAPP SYSRRQLLNF LAGTTVAVTA SAGAYAMGKF FVPPAEKGGA GGGIIAKDVL 

        70         80         90        100        110        120 
GNPIPASQIL AEAPGTRALV AGLAGDPTYL IVKEDGSLDS IGIVDSCTHL GCTFPWNGND 

       130        140        150        160        170 
QEFQCPCHGS RYHPDGSVAR GPAPLPLKIV QVAVVDDQIF ISPWTDLDPR TGEKPWWV

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References

[1]

"Sequence analysis of the genome of the unicellular cyanobacterium Synechocystis sp. strain PCC6803. II. Sequence determination of the entire genome and assignment of potential protein-coding regions."
Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y., Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T., Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.

Tabata S.
DNA Res. 3:109-136(1996) [PubMed: 8905231] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: ATCC 27184 / PCC 6803 / N-1.

Additional computationally mapped references.

Cross-references

Sequence databases
EMBL GenBank DDBJ	BA000022 Genomic DNA. Translation: BAA18833.1.
PIR	S76921.
RefSeq	NP_443021.1. NC_000911.1.
3D structure databases
ProteinModelPortal	P74714.
ModBase	Search...
Protein-protein interaction databases
IntAct	P74714. 1 interaction.
STRING	P74714.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	951899.
GenomeReviews	Gene locus slr1185 in contig BA000022_GR.
KEGG	syn:slr1185.
NMPDR	fig\|1148.1.peg.3122.
PATRIC	23843898. VBISynSp132158_3479.
Phylogenomic databases
eggNOG	COG0723.
HOGENOM	HBG668715.
OMA	IFQFNKD.
PhylomeDB	P74714.
ProtClustDB	PRK13474.
Enzyme and pathway databases
BioCyc	SSP1148:SLR1185-MONOMER.
Family and domain databases
HAMAP	MF_01335. Cytb6_f_Rieske. [Tree]
InterPro	IPR014909. 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]
Gene3D	G3DSA:2.102.10.10. Rieske_reg. 1 hit.
KO	K02636.
PANTHER	PTHR10134. Rieske. 1 hit.
Pfam	PF08802. CytB6-F_Fe-S. 1 hit. PF00355. Rieske. 1 hit. [Graphical view]
PRINTS	PR00162. RIESKE.
SUPFAM	SSF50022. Rieske_dom. 1 hit.
PROSITE	PS51296. RIESKE. 1 hit. PS51318. TAT. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

UCRIA_SYNY3

Accession

Primary (citable) accession number: P74714

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 21, 2005
Last sequence update:	February 1, 1997
Last modified:	January 25, 2012
This is version 87 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program

Relevant documents

Synechocystis PCC 6803

Synechocystis (strain PCC 6803): entries and gene names

SIMILARITY comments

Index of protein domains and families

Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·Documents

Preferred order of sections

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

Protocols and materials databases

Genome annotation databases

Phylogenomic databases

Enzyme and pathway databases

Family and domain databases

Entry information

Relevant documents