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P74714 (UCRIA_SYNY3) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 98. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Cytochrome b6-f complex iron-sulfur subunit 1

EC=1.10.9.1
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
OrganismSynechocystis sp. (strain PCC 6803 / Kazusa) [Reference proteome] [HAMAP]
Taxonomic identifier1111708 [NCBI]
Taxonomic lineageBacteriaCyanobacteriaOscillatoriophycideaeChroococcalesSynechocystis

Protein attributes

Sequence length178 AA.
Sequence statusComplete.
Protein existenceInferred 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. HAMAP-Rule 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-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 annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 178178Cytochrome b6-f complex iron-sulfur subunit 1 HAMAP-Rule MF_01335
PRO_0000127784

Regions

Transmembrane17 – 3620Helical; Potential
Domain61 – 161101Rieske

Sites

Metal binding1071Iron-sulfur (2Fe-2S) By similarity
Metal binding1091Iron-sulfur (2Fe-2S); via pros nitrogen By similarity
Metal binding1251Iron-sulfur (2Fe-2S) By similarity
Metal binding1281Iron-sulfur (2Fe-2S); via pros nitrogen By similarity

Amino acid modifications

Disulfide bond112 ↔ 127 By similarity

Sequences

Sequence LengthMass (Da)Tools
P74714 [UniParc].

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

FASTA17818,685
        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 

« Hide

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. expand/collapse author list , Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., 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
BA000022 Genomic DNA. Translation: BAA18833.1.
PIRS76921.
RefSeqNP_443021.1. NC_000911.1.
YP_005653080.1. NC_017277.1.
YP_007452896.1. NC_020286.1.

3D structure databases

ProteinModelPortalP74714.
ModBaseSearch...

Protein-protein interaction databases

IntActP74714. 1 interaction.
STRING1148.slr1185.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaBAA18833; BAA18833; BAA18833.
GeneID12255611.
14618588.
951899.
KEGGsyn:slr1185.
syy:SYNGTS_3127.
PATRIC23843898. VBISynSp132158_3479.

Phylogenomic databases

eggNOGCOG0723.
HOGENOMHOG000255192.
KOK02636.
OMAIFQFNKD.
ProtClustDBPRK13474.

Family and domain databases

Gene3D2.102.10.10. 1 hit.
HAMAPMF_01335. Cytb6_f_Rieske.
InterProIPR014909. 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]
PANTHERPTHR10134. PTHR10134. 1 hit.
PfamPF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view]
PRINTSPR00162. RIESKE.
SUPFAMSSF50022. Rieske_dom. 1 hit.
PROSITEPS51296. RIESKE. 1 hit.
PS51318. TAT. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameUCRIA_SYNY3
AccessionPrimary (citable) accession number: P74714
Entry history
Integrated into UniProtKB/Swiss-Prot: June 21, 2005
Last sequence update: February 1, 1997
Last modified: May 1, 2013
This is version 98 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

Synechocystis PCC 6803

Synechocystis (strain PCC 6803): entries and gene names

SIMILARITY comments

Index of protein domains and families