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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)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi46 – 461Iron (heme axial ligand); via amino nitrogen1 Publication
Binding sitei66 – 661Heme (covalent)1 Publication
Binding sitei69 – 691Heme (covalent)1 Publication
Metal bindingi70 – 701Iron (heme axial ligand)1 Publication

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 lineageiBacteriaCyanobacteriaOscillatoriophycideaeOscillatorialesPhormidium

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei300 – 31617HelicalSequence analysisAdd
BLAST

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Signal peptidei1 – 4545Add
BLAST
Chaini46 – 338293Cytochrome fPRO_0000023845Add
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

Secondary structure

1
338
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi47 – 537Combined sources
Beta strandi55 – 584Combined sources
Helixi65 – 684Combined sources
Beta strandi77 – 793Combined sources
Beta strandi82 – 843Combined sources
Beta strandi89 – 957Combined sources
Beta strandi109 – 1124Combined sources
Beta strandi115 – 1217Combined sources
Helixi131 – 1333Combined sources
Turni136 – 1383Combined sources
Helixi139 – 1413Combined sources
Helixi145 – 1473Combined sources
Beta strandi149 – 1524Combined sources
Beta strandi158 – 1658Combined sources
Turni166 – 1683Combined sources
Beta strandi170 – 1778Combined sources
Turni181 – 1833Combined sources
Beta strandi189 – 20113Combined sources
Beta strandi213 – 2153Combined sources
Beta strandi223 – 2308Combined sources
Beta strandi236 – 2416Combined sources
Beta strandi247 – 2526Combined sources
Beta strandi254 – 2563Combined sources
Beta strandi271 – 2733Combined sources
Beta strandi280 – 29011Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1CI3X-ray1.90M46-294[»]
ProteinModelPortaliP95522.
SMRiP95522. Positions 46-326.
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.
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
EntryMethodResolution (Å)ChainPositionsPDBsum
1CI3X-ray1.90M46-294[»]
ProteinModelPortaliP95522.
SMRiP95522. Positions 46-326.
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.
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...

Publicationsi

  1. "Some characteristics of cytochrome f in the cyanobacterium Phormidium laminosum: its sequence and charge properties in the reaction with plastocyanin."
    Wagner M.J., Packer J.C.L., Howe C.J., Bendall D.S.
    Biochim. Biophys. Acta 1276:246-252(1996) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  2. "Structure of the soluble domain of cytochrome f from the cyanobacterium Phormidium laminosum."
    Carrell C.J., Schlarb B.G., Bendall D.S., Howe C.J., Cramer W.A., Smith J.L.
    Biochemistry 38:9590-9599(1999) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (1.9 ANGSTROMS) OF 46-295, COFACTOR.

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 11, 2015
This is version 88 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.