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Protein

Cytochrome f

Gene

petA

Organism
Guillardia theta (Cryptomonas phi)
Status
Reviewed-Annotation score: -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 bindingi39Iron (heme axial ligand); via amino nitrogenBy similarity1
Binding sitei59Heme (covalent)By similarity1
Binding sitei62Heme (covalent)By similarity1
Metal bindingi63Iron (heme axial ligand)By similarity1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Biological processElectron transport, Photosynthesis, Transport
LigandHeme, Iron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome f
Gene namesi
Name:petA
Encoded oniPlastid; Chloroplast
OrganismiGuillardia theta (Cryptomonas phi)
Taxonomic identifieri55529 [NCBI]
Taxonomic lineageiEukaryotaCryptophytaPyrenomonadalesGeminigeraceaeGuillardia

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei287 – 306HelicalSequence analysisAdd BLAST20

GO - Cellular componenti

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 38By similarityAdd BLAST38
ChainiPRO_000002381539 – 321Cytochrome fAdd BLAST283

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

Structurei

3D structure databases

ProteinModelPortaliO78494
SMRiO78494
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome f family.Curated

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

HOGENOMiHOG000024481
OMAiHVGGNRG

Family and domain databases

Gene3Di2.60.40.830, 2 hits
HAMAPiMF_00610 Cytb6_f_cytF, 1 hit
InterProiView protein in InterPro
IPR024058 Cyt-f_TM
IPR002325 Cyt_f
IPR024094 Cyt_f_lg_dom
IPR036826 Cyt_f_lg_dom_sf
IPR011054 Rudment_hybrid_motif
PfamiView protein in Pfam
PF01333 Apocytochr_F_C, 1 hit
PF16639 Apocytochr_F_N, 1 hit
PRINTSiPR00610 CYTOCHROMEF
SUPFAMiSSF103431 SSF103431, 1 hit
SSF49441 SSF49441, 2 hits
SSF51246 SSF51246, 1 hit
PROSITEiView protein in PROSITE
PS51010 CYTF, 1 hit

Sequencei

Sequence statusi: Complete.

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

O78494-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MINLFLLKYK TAFSTFLKPF AYLSLILSVC FYSIQAQAFP VFAQQAYENP
60 70 80 90 100
REATGRIVCA NCHLAQKPVE IEVPQAVLPD TVFEAVVEVP YDLSLQQVTG
110 120 130 140 150
NGTKGPLNVG AVVILPEGFT LAPKDRISSE LKEKTKGLII TPYNEANPNI
160 170 180 190 200
LVVGPVPGKD HQKLVFPVLS PNPAENKNVH FIKYPVYVGA NRGRGQVNPT
210 220 230 240 250
GEKSNNTVYT SPIDGQIVKL EKSDNVTSFS IKSKTGDIIT VKVPFGPDIL
260 270 280 290 300
VKEGQTLVAD QQLTNDPNVG GFGQVETEIV LQSPARVKGL IAFFFTVILA
310 320
QILLVLKKKQ FEKVQLAEMN F
Length:321
Mass (Da):35,173
Last modified:November 1, 1998 - v1
Checksum:i42A1FF89FB05AE3D
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF041468 Genomic DNA Translation: AAC35685.1
RefSeqiNP_050751.1, NC_000926.1

Genome annotation databases

GeneIDi857056

Similar proteinsi

Entry informationi

Entry nameiCYF_GUITH
AccessioniPrimary (citable) accession number: O78494
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 15, 1998
Last sequence update: November 1, 1998
Last modified: March 28, 2018
This is version 99 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health