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Protein

Cytochrome f

Gene

petA

Organism
Phormidium laminosum
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-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

heme1 PublicationNote: Binds 1 heme group covalently.1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi46Iron (heme axial ligand); via amino nitrogen1 Publication1
Binding sitei66Heme (covalent)1 Publication1
Binding sitei69Heme (covalent)1 Publication1
Metal bindingi70Iron (heme axial ligand)1 Publication1

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
OrganismiPhormidium laminosum
Taxonomic identifieri32059 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaOscillatoriophycideaeOscillatorialesOscillatoriaceaePhormidium

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei300 – 316HelicalSequence analysisAdd BLAST17

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 45Add BLAST45
ChainiPRO_000002384546 – 338Cytochrome fAdd BLAST293

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

Secondary structure

1338
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi47 – 53Combined sources7
Beta strandi55 – 58Combined sources4
Helixi65 – 68Combined sources4
Beta strandi77 – 79Combined sources3
Beta strandi82 – 84Combined sources3
Beta strandi89 – 95Combined sources7
Beta strandi109 – 112Combined sources4
Beta strandi115 – 121Combined sources7
Helixi131 – 133Combined sources3
Turni136 – 138Combined sources3
Helixi139 – 141Combined sources3
Helixi145 – 147Combined sources3
Beta strandi149 – 152Combined sources4
Beta strandi158 – 165Combined sources8
Turni166 – 168Combined sources3
Beta strandi170 – 177Combined sources8
Turni181 – 183Combined sources3
Beta strandi189 – 201Combined sources13
Beta strandi213 – 215Combined sources3
Beta strandi223 – 230Combined sources8
Beta strandi236 – 241Combined sources6
Beta strandi247 – 252Combined sources6
Beta strandi254 – 256Combined sources3
Beta strandi271 – 273Combined sources3
Beta strandi280 – 290Combined sources11

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1CI3X-ray1.90M46-294[»]
ProteinModelPortaliP95522.
SMRiP95522.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP95522.

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.

P95522-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNFKVCSFPS RRQSIAAFVR VLMVILLTLG ALVSSDVLLP QPAAAYPFWA
60 70 80 90 100
QQNYANPREA TGRIVCANCH LAAKPAEIEV PQAVLPDSVF KAVVKIPYDH
110 120 130 140 150
SVQQVQADGS KGPLNVGAVL MLPEGFTIAP EDRIPEEMKE EVGPSYLFQP
160 170 180 190 200
YADDKQNIVL VGPLPGDQYE EIVFPVLSPN PATNKSVAFG KYSIHLGANR
210 220 230 240 250
GRGQIYPTGE KSNNAVYNAS AAGVITAIAK ADDGSAEVKI RTEDGTTIVD
260 270 280 290 300
KIPAGPELIV SEGEEVAAGA ALTNNPNVGG FGQKDTEIVL QSPNRVKGRI
310 320 330
AFLAAITLTQ ILLVLKKKQV ERVQAGRDDL LKAAFIAG
Length:338
Mass (Da):36,069
Last modified:May 1, 1999 - v2
Checksum:iBD3D52036181FB50
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y09612 Genomic DNA. Translation: CAA70824.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y09612 Genomic DNA. Translation: CAA70824.1.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1CI3X-ray1.90M46-294[»]
ProteinModelPortaliP95522.
SMRiP95522.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Miscellaneous databases

EvolutionaryTraceiP95522.

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_PHOLA
AccessioniPrimary (citable) accession number: P95522
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 1, 2000
Last sequence update: May 1, 1999
Last modified: November 2, 2016
This is version 90 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

3D-structure

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. 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.