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Protein

Cytochrome f

Gene

petA

Organism
Brassica rapa subsp. rapa (Turnip)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

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

heme3 PublicationsNote: Binds 1 heme group covalently.3 Publications

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi36Iron (heme axial ligand); via amino nitrogen3 Publications1
Binding sitei56Heme (covalent)3 Publications1
Binding sitei59Heme (covalent)3 Publications1
Metal bindingi60Iron (heme axial ligand)3 Publications1

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
OrganismiBrassica rapa subsp. rapa (Turnip)
Taxonomic identifieri51350 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeBrassiceaeBrassica

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte; Source: COMPARTMENTS

Topology

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

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 351 PublicationAdd BLAST35
ChainiPRO_000002380636 – 320Cytochrome fAdd BLAST285

Post-translational modificationi

Purified from leaves as a water-soluble monomeric protein with a mass of 28.16 kDa, cleavage occurs after Gln-287 and separates the heme-binding from the membrane.1 Publication

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

DIPiDIP-62N
MINTiP36438

Structurei

Secondary structure

1320
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi37 – 43Combined sources7
Beta strandi45 – 48Combined sources4
Helixi55 – 58Combined sources4
Beta strandi67 – 69Combined sources3
Beta strandi72 – 74Combined sources3
Beta strandi79 – 85Combined sources7
Beta strandi99 – 102Combined sources4
Beta strandi105 – 111Combined sources7
Helixi121 – 123Combined sources3
Helixi126 – 132Combined sources7
Beta strandi138 – 141Combined sources4
Beta strandi147 – 154Combined sources8
Helixi155 – 158Combined sources4
Beta strandi159 – 166Combined sources8
Turni170 – 172Combined sources3
Beta strandi180 – 190Combined sources11
Beta strandi202 – 204Combined sources3
Beta strandi212 – 219Combined sources8
Beta strandi225 – 231Combined sources7
Turni232 – 235Combined sources4
Beta strandi236 – 242Combined sources7
Beta strandi261 – 263Combined sources3
Beta strandi270 – 280Combined sources11

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1CTMX-ray2.30A36-285[»]
1HCZX-ray1.96A36-287[»]
1JX8model-A36-285[»]
1TKWNMR-B36-287[»]
2PCFNMR-B36-285[»]
ProteinModelPortaliP36438
SMRiP36438
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP36438

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome f family.Curated

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

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.

P36438-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQTRNTFSWI REEITRSISV SLMIYIITWA SISSAYPIFA QQNYENPREA
60 70 80 90 100
TGRIVCANCH LASKPVDIEV PQAVLPDTVF EAVVKIPYDM QLKQVLANGK
110 120 130 140 150
KGALNVGAVL ILPEGFELAP PDRISPEMKE KIGNLSFQNY RPNKKNILVI
160 170 180 190 200
GPVPGQKYSE ITFPILAPDP ATNKDVHFLK YPIYVGGNRG RGQIYPDGSK
210 220 230 240 250
SNNTVYNATA GGIISKILRK EKGGYEITIV DASNERQVID IIPRGLELLV
260 270 280 290 300
SEGESIKLDQ PLTSNPNVGG FGQGDAEIVL QDPLRVQGLL FFLGSVVLAQ
310 320
IFLVLKKKQF EKVQLSEMNF
Length:320
Mass (Da):35,389
Last modified:June 1, 1994 - v1
Checksum:i466324C040C3E00F
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X77011 Genomic DNA Translation: CAA54307.1
PIRiS45661

Similar proteinsi

Entry informationi

Entry nameiCYF_BRARR
AccessioniPrimary (citable) accession number: P36438
Entry historyiIntegrated into UniProtKB/Swiss-Prot: June 1, 1994
Last sequence update: June 1, 1994
Last modified: May 23, 2018
This is version 121 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

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