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Protein

Cytochrome f

Gene

petA

Organism
Mastigocladus laminosus (Fischerella sp.)
Status
Reviewed-Annotation score: Annotation score: 4 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.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

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
OrganismiMastigocladus laminosus (Fischerella sp.)
Taxonomic identifieri83541 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaNostocalesHapalosiphonaceaeMastigocladus

Subcellular locationi

  • Cellular thylakoid membrane 1 Publication; Single-pass membrane protein 1 Publication

Topology

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

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

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
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi46 – 52Combined sources7
Beta strandi53 – 55Combined sources3
Helixi65 – 68Combined sources4
Beta strandi77 – 79Combined sources3
Beta strandi82 – 84Combined sources3
Beta strandi89 – 95Combined sources7
Beta strandi107 – 109Combined sources3
Beta strandi115 – 121Combined sources7
Helixi131 – 133Combined sources3
Helixi136 – 142Combined sources7
Beta strandi148 – 151Combined sources4
Beta strandi157 – 164Combined sources8
Turni165 – 167Combined sources3
Beta strandi169 – 176Combined sources8
Turni180 – 182Combined sources3
Beta strandi189 – 200Combined sources12
Beta strandi212 – 214Combined sources3
Beta strandi219 – 222Combined sources4
Beta strandi227 – 230Combined sources4
Beta strandi233 – 235Combined sources3
Beta strandi238 – 242Combined sources5
Beta strandi245 – 248Combined sources4
Beta strandi252 – 254Combined sources3
Beta strandi255 – 259Combined sources5
Beta strandi283 – 293Combined sources11
Helixi296 – 328Combined sources33
Turni329 – 331Combined sources3

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...

Miscellaneous databases

EvolutionaryTraceiP83793.

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.

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.

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...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Miscellaneous databases

EvolutionaryTraceiP83793.

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_MASLA
AccessioniPrimary (citable) accession number: P83793
Secondary accession number(s): Q5YJJ7
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 13, 2004
Last sequence update: July 1, 2008
Last modified: November 2, 2016
This is version 71 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.