Cytochrome b6-f complex iron-sulfur subunit 2 - Synechocystis sp. (strain PCC 6803 / Kazusa)

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P26290 (UCRIB_SYNY3) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 104. 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 2
EC=1.10.9.1

Alternative name(s):
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein 2
Short name=ISP 2
Short name=RISP 2
Rieske iron-sulfur protein 2

Gene names

Name:	petC2
Ordered Locus Names:	sll1316

Organism

Synechocystis sp. (strain PCC 6803 / Kazusa) [Reference proteome] [HAMAP]

Taxonomic identifier

1111708 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Oscillatoriophycideae › Chroococcales › Synechocystis ›

Protein attributes

Sequence length	180 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-Rule MF_01335
Catalytic activity	Plastoquinol + 2 oxidized plastocyanin + 2 H⁺(Side 1) = plastoquinone + 2 reduced plastocyanin + 2 H⁺(Side 2). HAMAP-Rule 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. HAMAP-Rule MF_01335
Miscellaneous	The Rieske iron-sulfur protein is a high potential 2Fe-2S protein. HAMAP-Rule MF_01335
Sequence similarities	Contains 1 Rieske domain.
Sequence caution	The sequence BAA17628.1 differs from that shown. Reason: Erroneous initiation. The sequence CAA41421.1 differs from that shown. Reason: Erroneous initiation.

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: HAMAP
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: HAMAP metal 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...

Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Chain

1 – 180

180

Cytochrome b6-f complex iron-sulfur subunit 2 HAMAP-Rule MF_01335

PRO_0000127785

Regions

Transmembrane

21 – 43

Helical; Potential

Domain

66 – 162

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

Sequences

Sequence

Length

Mass (Da)

Tools

P26290 [UniParc].

Last modified October 1, 1996. Version 2.
Checksum: 351CB0C7DF892B5C
Show »

FASTA

180

18,996

        10         20         30         40         50         60 
MTQISGSPDV PDLGRRQFMN LLTFGTITGV AAGALYPAVK YLIPPSSGGS GGGVTAKDAL 

        70         80         90        100        110        120 
GNDVKVTEFL ASHNAGDRVL AQGLKGDPTY IVVQGDDTIA NYGINAVCTH LGCVVPWNAS 

       130        140        150        160        170        180 
ENKFMCPCHG SQYNAEGKVV RGPAPLSLAL AHATVTDDDK LVLSTWTETD FRTDEDPWWA

« Hide

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Primary structure of the psbN-psbH-petC-petA gene cluster of the cyanobacterium Synechocystis PCC 6803." Mayes S.R., Barber J. Plant Mol. Biol. 17:289-293(1991) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"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] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: PCC 6803 / Kazusa.

Cross-references

Sequence databases
EMBL GenBank DDBJ	X58532 Genomic DNA. Translation: CAA41422.1. X58532 Genomic DNA. Translation: CAA41421.1. Different initiation. BA000022 Genomic DNA. Translation: BAA17628.1. Different initiation.
PIR	S16572.
RefSeq	NP_440948.1. NC_000911.1. YP_005651007.1. NC_017277.1. YP_007450831.1. NC_020286.1.
3D structure databases
ProteinModelPortal	P26290.
SMR	P26290. Positions 9-179.
ModBase	Search...
Protein-protein interaction databases
STRING	1148.sll1316.
Protein family/group databases
TCDB	3.D.3.5.1. proton-translocating quinol:cytochrome c reductase (QCR) superfamily.
Proteomic databases
PaxDb	P26290.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	BAA17628; BAA17628; BAA17628.
GeneID	12255173. 14616485. 954258.
KEGG	syn:sll1316. syy:SYNGTS_1054.
PATRIC	23839170. VBISynSp132158_1149.
Phylogenomic databases
eggNOG	COG0723.
HOGENOM	HOG000255192.
KO	K02636.
OMA	GDPTYIV.
ProtClustDB	PRK13474.
Family and domain databases
Gene3D	2.102.10.10. 1 hit.
HAMAP	MF_01335. Cytb6_f_Rieske.
InterPro	IPR000595. cNMP-bd_dom. 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. [Graphical view]
PANTHER	PTHR10134. PTHR10134. 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. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

UCRIB_SYNY3

Accession

Primary (citable) accession number: P26290

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 1, 1992
Last sequence update:	October 1, 1996
Last modified:	May 1, 2013
This is version 104 of the entry and version 2 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

Protein family/group databases

Proteomic databases

Protocols and materials databases

Genome annotation databases

Phylogenomic databases

Family and domain databases

Entry information

Relevant documents