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Protein

Cytochrome b6-f complex subunit 6

Gene

petL

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. PetL is important for photoautotrophic growth as well as for electron transfer efficiency and stability of the cytochrome b6-f complex.

GO - Molecular functioni

  1. electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity Source: UniProtKB-HAMAP

GO - Biological processi

  1. oxidation-reduction process Source: UniProtKB-HAMAP
  2. photosynthesis Source: UniProtKB-KW
Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome b6-f complex subunit 6UniRule annotation
Alternative name(s):
Cytochrome b6-f complex subunit PetLUniRule annotation
Cytochrome b6-f complex subunit VIUniRule annotation
Gene namesi
Name:petLUniRule annotation
OrganismiMastigocladus laminosus (Fischerella sp.)
Taxonomic identifieri83541 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaStigonematalesMastigocladus

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei6 – 2621HelicalUniRule annotationAdd
BLAST

GO - Cellular componenti

  1. cytochrome b6f complex Source: InterPro
  2. integral component of membrane Source: UniProtKB-KW
  3. thylakoid membrane Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 3232Cytochrome b6-f complex subunit 6PRO_0000220486Add
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.

Structurei

Secondary structure

1
32
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi3 – 2725Combined sources
Turni28 – 303Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1VF5X-ray3.00E/R1-32[»]
2D2CX-ray3.80E/R1-32[»]
2E74X-ray3.00E1-32[»]
2E75X-ray3.55E1-32[»]
2E76X-ray3.41E1-32[»]
4H0LX-ray3.25E1-32[»]
4H13X-ray3.07E1-32[»]
4I7ZX-ray2.80E1-32[»]
4PV1X-ray3.00E1-32[»]
SMRiP83795. Positions 1-32.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP83795.

Family & Domainsi

Sequence similaritiesi

Belongs to the PetL family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

HAMAPiMF_00433. Cytb6_f_PetL.
InterProiIPR007802. Cyt_b6/f_cplx_su6.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P83795-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30 
MILGAVFYIV FIALFFGIAV GIIFAIKSIK LI
Length:32
Mass (Da):3,502
Last modified:March 14, 2004 - v1
Checksum:iB9C10271C3DE499F
GO

Cross-referencesi

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1VF5X-ray3.00E/R1-32[»]
2D2CX-ray3.80E/R1-32[»]
2E74X-ray3.00E1-32[»]
2E75X-ray3.55E1-32[»]
2E76X-ray3.41E1-32[»]
4H0LX-ray3.25E1-32[»]
4H13X-ray3.07E1-32[»]
4I7ZX-ray2.80E1-32[»]
4PV1X-ray3.00E1-32[»]
SMRiP83795. Positions 1-32.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Miscellaneous databases

EvolutionaryTraceiP83795.

Family and domain databases

HAMAPiMF_00433. Cytb6_f_PetL.
InterProiIPR007802. Cyt_b6/f_cplx_su6.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Structure of the cytochrome b6f complex of oxygenic photosynthesis: tuning the cavity."
    Kurisu G., Zhang H., Smith J.L., Cramer W.A.
    Science 302:1009-1014(2002) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (3.0 ANGSTROMS).

Entry informationi

Entry nameiPETL_MASLA
AccessioniPrimary (citable) accession number: P83795
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 9, 2004
Last sequence update: March 14, 2004
Last modified: March 31, 2015
This is version 50 of the entry and version 1 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

External Data

Dasty 3

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 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.