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Protein

Cytochrome b6-f complex subunit 4

Gene

petD

Organism
Mastigocladus laminosus (Fischerella sp.)
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.1 Publication

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome b6-f complex subunit 4UniRule annotation
Alternative name(s):
17 kDa polypeptideUniRule annotation
Cytochrome b6-f complex subunit IV1 Publication
Gene namesi
Name:petDUniRule annotation
OrganismiMastigocladus laminosus (Fischerella sp.)
Taxonomic identifieri83541 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaNostocalesHapalosiphonaceaeMastigocladus

Subcellular locationi

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

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini1 – 35Cytoplasmic1 PublicationAdd BLAST35
Transmembranei36 – 56HelicalUniRule annotation1 PublicationAdd BLAST21
Topological domaini57 – 94Lumenal, thylakoid1 PublicationAdd BLAST38
Transmembranei95 – 115HelicalUniRule annotation1 PublicationAdd BLAST21
Topological domaini116 – 130Cytoplasmic1 PublicationAdd BLAST15
Transmembranei131 – 151HelicalUniRule annotation1 PublicationAdd BLAST21
Topological domaini152 – 160Lumenal, thylakoid1 Publication9

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000619011 – 160Cytochrome b6-f complex subunit 4Add BLAST160

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

1160
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi12 – 19Combined sources8
Beta strandi26 – 30Combined sources5
Helixi31 – 35Combined sources5
Turni36 – 39Combined sources4
Helixi40 – 57Combined sources18
Helixi79 – 81Combined sources3
Helixi82 – 90Combined sources9
Helixi94 – 114Combined sources21
Helixi115 – 117Combined sources3
Beta strandi119 – 121Combined sources3
Helixi123 – 125Combined sources3
Helixi127 – 148Combined sources22
Helixi151 – 153Combined sources3
Beta strandi154 – 156Combined sources3
Turni157 – 159Combined sources3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1VF5X-ray3.00B/O1-160[»]
2D2CX-ray3.80B/O1-160[»]
2E74X-ray3.00B1-160[»]
2E75X-ray3.55B1-160[»]
2E76X-ray3.41B1-160[»]
4H0LX-ray3.25B1-160[»]
4H13X-ray3.07B1-160[»]
4I7ZX-ray2.80B1-160[»]
4PV1X-ray3.00B1-160[»]
ProteinModelPortaliP83792.
SMRiP83792.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP83792.

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome b family. PetD subfamily.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

HAMAPiMF_01344. Cytb6_f_subIV. 1 hit.
InterProiIPR005798. Cyt_b/b6_C.
IPR005870. Cyt_b6/f_cplx_suIV.
[Graphical view]
PfamiPF00032. Cytochrom_B_C. 1 hit.
[Graphical view]
PIRSFiPIRSF000033. B6f_17K. 1 hit.
SUPFAMiSSF81648. SSF81648. 1 hit.
TIGRFAMsiTIGR01156. cytb6/f_IV. 1 hit.
PROSITEiPS51003. CYTB_CTER. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P83792-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MATLKKPDLS DPKLRAKLAK GMGHNYYGEP AWPNDLLYVF PVVIMGTFAC
60 70 80 90 100
IVALSVLDPA MVGEPADPFA TPLEILPEWY LYPVFQILRS VPNKLLGVLL
110 120 130 140 150
MASVPLGLIL VPFIENVNKF QNPFRRPVAT TIFLFGTLVT IWLGIGATFP
160
LDKTLTLGLF
Length:160
Mass (Da):17,674
Last modified:January 10, 2006 - v2
Checksum:i3592F24AD0B6F4DE
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY390357 Genomic DNA. Translation: AAR26243.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY390357 Genomic DNA. Translation: AAR26243.1.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1VF5X-ray3.00B/O1-160[»]
2D2CX-ray3.80B/O1-160[»]
2E74X-ray3.00B1-160[»]
2E75X-ray3.55B1-160[»]
2E76X-ray3.41B1-160[»]
4H0LX-ray3.25B1-160[»]
4H13X-ray3.07B1-160[»]
4I7ZX-ray2.80B1-160[»]
4PV1X-ray3.00B1-160[»]
ProteinModelPortaliP83792.
SMRiP83792.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Miscellaneous databases

EvolutionaryTraceiP83792.

Family and domain databases

HAMAPiMF_01344. Cytb6_f_subIV. 1 hit.
InterProiIPR005798. Cyt_b/b6_C.
IPR005870. Cyt_b6/f_cplx_suIV.
[Graphical view]
PfamiPF00032. Cytochrom_B_C. 1 hit.
[Graphical view]
PIRSFiPIRSF000033. B6f_17K. 1 hit.
SUPFAMiSSF81648. SSF81648. 1 hit.
TIGRFAMsiTIGR01156. cytb6/f_IV. 1 hit.
PROSITEiPS51003. CYTB_CTER. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiPETD_MASLA
AccessioniPrimary (citable) accession number: P83792
Secondary accession number(s): Q5YJJ5
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 13, 2004
Last sequence update: January 10, 2006
Last modified: November 2, 2016
This is version 75 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.