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Protein

Cytochrome f

Gene

petA

Organism
Synechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6) (Agmenellum quadruplicatum)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

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

Cofactori

hemeBy similarityNote: Binds 1 heme group covalently.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi41Iron (heme axial ligand); via amino nitrogenBy similarity1
Binding sitei62Heme (covalent)By similarity1
Binding sitei65Heme (covalent)By similarity1
Metal bindingi66Iron (heme axial ligand)By similarity1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Heme, Iron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome f
Gene namesi
Name:petA
Ordered Locus Names:SYNPCC7002_A1910
OrganismiSynechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6) (Agmenellum quadruplicatum)
Taxonomic identifieri32049 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesSynechococcaceaeSynechococcus
Proteomesi
  • UP000001688 Componenti: Chromosome

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei290 – 309HelicalSequence analysisAdd BLAST20

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 40By similarityAdd BLAST40
ChainiPRO_000002384741 – 325Cytochrome fAdd BLAST285

Interactioni

Subunit structurei

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).By similarity

Protein-protein interaction databases

STRINGi32049.SYNPCC7002_A1910.

Structurei

3D structure databases

ProteinModelPortaliP26293.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome f family.Curated

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG4105D1D. Bacteria.
ENOG410XPEN. LUCA.
HOGENOMiHOG000024481.
KOiK02634.
OMAiHVGGNRG.
OrthoDBiPOG091H13JA.

Family and domain databases

Gene3Di1.20.5.700. 1 hit.
2.60.40.830. 2 hits.
HAMAPiMF_00610. Cytb6_f_cytF. 1 hit.
InterProiIPR024058. Cyt-f_TM.
IPR002325. Cyt_f.
IPR024094. Cyt_f_lg_dom.
IPR011054. Rudment_hybrid_motif.
[Graphical view]
PfamiPF01333. Apocytochr_F_C. 1 hit.
PF16639. Apocytochr_F_N. 1 hit.
[Graphical view]
PRINTSiPR00610. CYTOCHROMEF.
SUPFAMiSSF103431. SSF103431. 1 hit.
SSF49441. SSF49441. 2 hits.
SSF51246. SSF51246. 1 hit.
PROSITEiPS51010. CYTF. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P26293-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKTPELMAIW QRLKTACLVA IATFGLFFAS DVLFPQAAAA YPFWAQQTAP
60 70 80 90 100
ETPREATGRI VCANCHLAAK EAEVEIPQSV LPDQVFEAVV KIPYDHSQQQ
110 120 130 140 150
VLGDGSKGGL NVGAVLMLPD GFKIAPADRL SDELKEKTEG LYFQSYAPDQ
160 170 180 190 200
ENVVIIGPIS GDQYEEIVFP VLSPDPKTDK NINYGKYAVH LGANRGRGQV
210 220 230 240 250
YPTGELSNNN QFKASATGTI TNIAVNEAAG TDITISTEAG EVIDTIPAGP
260 270 280 290 300
EVIVSEGQAI AAGEALTNNP NVGGFGQKDT EVVLQNPARI YGYMAFVAGI
310 320
MLTQIFLVLK KKQVERVQAA GQLDF
Length:325
Mass (Da):34,875
Last modified:June 10, 2008 - v2
Checksum:i1CF5A2C58058C8FA
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti322 – 323QL → NC in AAA22070 (PubMed:1421151).Curated2

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M74514 Genomic DNA. Translation: AAA22070.1.
CP000951 Genomic DNA. Translation: ACA99897.1.
RefSeqiWP_012307520.1. NC_010475.1.

Genome annotation databases

EnsemblBacteriaiACA99897; ACA99897; SYNPCC7002_A1910.
KEGGisyp:SYNPCC7002_A1910.
PATRICi23818458. VBISynSp37135_2169.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M74514 Genomic DNA. Translation: AAA22070.1.
CP000951 Genomic DNA. Translation: ACA99897.1.
RefSeqiWP_012307520.1. NC_010475.1.

3D structure databases

ProteinModelPortaliP26293.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi32049.SYNPCC7002_A1910.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiACA99897; ACA99897; SYNPCC7002_A1910.
KEGGisyp:SYNPCC7002_A1910.
PATRICi23818458. VBISynSp37135_2169.

Phylogenomic databases

eggNOGiENOG4105D1D. Bacteria.
ENOG410XPEN. LUCA.
HOGENOMiHOG000024481.
KOiK02634.
OMAiHVGGNRG.
OrthoDBiPOG091H13JA.

Family and domain databases

Gene3Di1.20.5.700. 1 hit.
2.60.40.830. 2 hits.
HAMAPiMF_00610. Cytb6_f_cytF. 1 hit.
InterProiIPR024058. Cyt-f_TM.
IPR002325. Cyt_f.
IPR024094. Cyt_f_lg_dom.
IPR011054. Rudment_hybrid_motif.
[Graphical view]
PfamiPF01333. Apocytochr_F_C. 1 hit.
PF16639. Apocytochr_F_N. 1 hit.
[Graphical view]
PRINTSiPR00610. CYTOCHROMEF.
SUPFAMiSSF103431. SSF103431. 1 hit.
SSF49441. SSF49441. 2 hits.
SSF51246. SSF51246. 1 hit.
PROSITEiPS51010. CYTF. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiCYF_SYNP2
AccessioniPrimary (citable) accession number: P26293
Secondary accession number(s): B1XQK2
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 1, 1992
Last sequence update: June 10, 2008
Last modified: November 2, 2016
This is version 102 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.