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Protein

Cytochrome f

Gene

petA

Organism
Porphyra purpurea (Red seaweed) (Ulva purpurea)
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 bindingi37Iron (heme axial ligand); via amino nitrogenBy similarity1
Binding sitei57Heme (covalent)By similarity1
Binding sitei60Heme (covalent)By similarity1
Metal bindingi61Iron (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
Encoded oniPlastid; Chloroplast
OrganismiPorphyra purpurea (Red seaweed) (Ulva purpurea)
Taxonomic identifieri2787 [NCBI]
Taxonomic lineageiEukaryotaRhodophytaBangiophyceaeBangialesBangiaceaePorphyra

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei286 – 305HelicalSequence analysisAdd BLAST20

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 36By similarityAdd BLAST36
ChainiPRO_000002383337 – 320Cytochrome fAdd BLAST284

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

ProteinModelPortaliP51265.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome f family.Curated

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

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.

P51265-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKLNSLINLI QKSIYSCTLL LTILNIICIA PNSSNAFPIY AQQAYESPRE
60 70 80 90 100
ATGRIVCANC HLAQKPVEIE APQAVLPNTV FETVVKIPYD NNAKQILGNG
110 120 130 140 150
SKGGLNVGAV VILPEGFKLA PANRLSPELK EKTKNLYIQP YSTKQSNILV
160 170 180 190 200
IGPIPGDKNR EIIFPILSPD PAKDKQAHFF KYPIYVGGNR GRGQIYPTGD
210 220 230 240 250
KSNNNLISAS ASGKINKIEA LEKGGFIVHI TSTKDSEVNQ SIPAGVELKV
260 270 280 290 300
REGETIQLDQ AISKDPNVGG FGQNETEIVL QSPNRIKGMI AFFFVSVLAQ
310 320
IFFVLKKKQF EKVQAAEMNF
Length:320
Mass (Da):35,012
Last modified:October 1, 1996 - v1
Checksum:iC9B103F0453369C7
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U38804 Genomic DNA. Translation: AAC08151.1.
PIRiS73186.
RefSeqiNP_053875.1. NC_000925.1.

Genome annotation databases

GeneIDi809894.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U38804 Genomic DNA. Translation: AAC08151.1.
PIRiS73186.
RefSeqiNP_053875.1. NC_000925.1.

3D structure databases

ProteinModelPortaliP51265.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi809894.

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_PORPU
AccessioniPrimary (citable) accession number: P51265
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1996
Last sequence update: October 1, 1996
Last modified: October 5, 2016
This is version 83 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

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.