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Protein

Cytochrome f

Gene

petA

Organism
Nicotiana tabacum (Common tobacco)
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)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi36 – 361Iron (heme axial ligand); via amino nitrogenBy similarity
Binding sitei56 – 561Heme (covalent)By similarity
Binding sitei59 – 591Heme (covalent)By similarity
Metal bindingi60 – 601Iron (heme axial ligand)By similarity

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
OrganismiNicotiana tabacum (Common tobacco)
Taxonomic identifieri4097 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridslamiidsSolanalesSolanaceaeNicotianoideaeNicotianeaeNicotiana

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei286 – 30520HelicalSequence analysisAdd
BLAST

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Signal peptidei1 – 3535By similarityAdd
BLAST
Chaini36 – 320285Cytochrome fPRO_0000023838Add
BLAST

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

ProteinModelPortaliP06449.
SMRiP06449. Positions 36-320.
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.

P06449-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQTRNAFSWL KKQITRSISV SLMIYILTRT SISSAYPIFA QQGYENPREA
60 70 80 90 100
TGRIVCANCH LANKPVEIEV PQAVLPDTVF EAVVRIPYDM QLKQVLANGK
110 120 130 140 150
RGGLNVGAVL ILPEGFELAP PDRISPEMKE KIGNLSFQSY RPNKKNILVI
160 170 180 190 200
GPVPGQKYSE ITFPILSPDP ATKKDVHFLK YPIYVGGNRG RGQIYPDGSK
210 220 230 240 250
SNNTVYNATA AGIVSKIIRK EKGGYEITIT DASDGRQVVD IIPPGPELLV
260 270 280 290 300
SEGESIKFDQ PLTSNPNVGG FGQGDAEIVL QDPLRVQGLL FFLASVILAQ
310 320
IFLVLKKKQF EKVQLAEMNF
Length:320
Mass (Da):35,246
Last modified:January 1, 1988 - v1
Checksum:iE40456003666E88C
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z00044 Genomic DNA. Translation: CAA77365.1.
PIRiA00149. CFNT.
RefSeqiNP_054512.1. NC_001879.2.

Genome annotation databases

GeneIDi800461.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z00044 Genomic DNA. Translation: CAA77365.1.
PIRiA00149. CFNT.
RefSeqiNP_054512.1. NC_001879.2.

3D structure databases

ProteinModelPortaliP06449.
SMRiP06449. Positions 36-320.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi800461.

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_TOBAC
AccessioniPrimary (citable) accession number: P06449
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 1, 1988
Last sequence update: January 1, 1988
Last modified: November 11, 2015
This is version 97 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

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.