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Protein

Cytochrome f

Gene

petA

Organism
Mastigocladus laminosus (Fischerella sp.)
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.1 Publication

Cofactori

heme1 PublicationNote: Binds 1 heme group covalently.1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi45Iron (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

Keywordsi

Biological processElectron transport, Photosynthesis, Transport
LigandHeme, Iron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome f
Gene namesi
Name:petA
OrganismiMastigocladus laminosus (Fischerella sp.)
Taxonomic identifieri83541 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaNostocalesHapalosiphonaceaeMastigocladus

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini38 – 298Cytoplasmic1 PublicationAdd BLAST261
Transmembranei299 – 319Helical1 PublicationAdd BLAST21
Topological domaini320 – 333Lumenal, thylakoid1 PublicationAdd BLAST14

GO - Cellular componenti

Keywords - Cellular componenti

Membrane, Thylakoid

Pathology & Biotechi

Chemistry databases

DrugBankiDB08453 2-NONYL-4-HYDROXYQUINOLINE N-OXIDE
DB04646 Dibromothymoquinone

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 37Sequence analysisAdd BLAST37
ChainiPRO_000020797738 – 333Cytochrome fAdd BLAST296

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.1 Publication

Structurei

Secondary structure

1333
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

ProteinModelPortaliP83793
SMRiP83793
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP83793

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.

P83793-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MRNSCKKARR TRPLKATIQA LLVAIATMTF FFTSDIALPQ SAAAYPFWAQ
60 70 80 90 100
QTYPETPREP TGRIVCANCH LAAKPAEVEV PQSVLPDTVF KAVVKIPYDT
110 120 130 140 150
KLQQVAADGS KVGLNVGAVL MLPEGFKIAP EERIPEELKK EVGDVYFQPY
160 170 180 190 200
KEGQDNVLLV GPLPGEQYQE IVFPVLSPNP TTDKNIHFGK YAIHLGANRG
210 220 230 240 250
RGQIYPTGEK SNNNVFTASA TGTITKIAKE EDEYGNVKYQ VSIQTDSGKT
260 270 280 290 300
VVDTIPAGPE LIVSEGQAVK AGEALTNNPN VGGFGQDDTE IVLQDPNRVK
310 320 330
WMIAFICLVM LAQLMLILKK KQVEKVQAAE MNF
Length:333
Mass (Da):36,450
Last modified:July 1, 2008 - v2
Checksum:iE768F5C264323061
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY390356 Genomic DNA Translation: AAR26241.1

Similar proteinsi

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY390356 Genomic DNA Translation: AAR26241.1

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1VF5X-ray3.00C/P45-333[»]
2D2CX-ray3.80C/P45-333[»]
2E74X-ray3.00C45-333[»]
2E75X-ray3.55C45-333[»]
2E76X-ray3.41C45-333[»]
4H0LX-ray3.25C45-333[»]
4H13X-ray3.07C45-333[»]
4I7ZX-ray2.80C45-333[»]
4PV1X-ray3.00C45-333[»]
ProteinModelPortaliP83793
SMRiP83793
ModBaseiSearch...
MobiDBiSearch...

Chemistry databases

DrugBankiDB08453 2-NONYL-4-HYDROXYQUINOLINE N-OXIDE
DB04646 Dibromothymoquinone

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Miscellaneous databases

EvolutionaryTraceiP83793

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
ProtoNetiSearch...

Entry informationi

Entry nameiCYF_MASLA
AccessioniPrimary (citable) accession number: P83793
Secondary accession number(s): Q5YJJ7
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 13, 2004
Last sequence update: July 1, 2008
Last modified: October 10, 2018
This is version 79 of the entry and version 2 of the sequence. See 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
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