HAMAP

Accession	MF_00432
Dates	18-AUG-2001 (Created) 2-DEC-2010 (Last updated, Version 38)

Data class

Protein

Predictors

HAMAP; MF_00432; [distribution of match scores in UniProtKB];[seed alignment for MF_00432]

Names

Cytb6_f_PetG

Identifier

PETG

Protein name

RecName: Full=Cytochrome b6-f complex subunit 5; AltName: Full=Cytochrome b6-f complex subunit V; AltName: Full=Cytochrome b6-f complex subunit petG;

Gene name

petG

FUNCTION: 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. PetG is required for either the stability or assembly of the cytochrome b6-f complex (By similarity).

SUBUNIT: 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).

SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane; Single-pass membrane protein (By similarity).

SUBCELLULAR LOCATION: Cell inner membrane; Single-pass membrane protein (By similarity).

SUBCELLULAR LOCATION: Cellular thylakoid membrane; Single-pass membrane protein (By similarity).

SIMILARITY: Belongs to the petG family.

Pfam	PF02529; PetG; 1;

Transport, Electron transport, Photosynthesis.

Cell membrane, Cell inner membrane.

Thylakoid.

Membrane, Transmembrane, Transmembrane helix.

GO:0045158; Molecular function: electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity.
GO:0017004; Biological process: cytochrome complex assembly.
GO:0055114; Biological process: oxidation-reduction process.

GO:0009535; Cellular component: chloroplast thylakoid membrane.

GO:0005886; Cellular component: plasma membrane.

GO:0042651; Cellular component: thylakoid membrane.

From: PETG_SYNY3 (P74149)
Key		From		To		Description		Condition		FTGroup
TRANSMEM		5		25		Helical; (Potential)

Size range:	33-40 amino acids
Related UniRules:	None
Template:	Q08362 (PETG_CHLRE)
Scope:	Bacteria; Cyanobacteria Plastid
Fusion:	Nter: None; Cter: None
Duplicate:	None
Plasmid encoded:	None