HAMAP

Accession	MF_00610
Dates	23-DEC-2002 (Created) 2-DEC-2010 (Last updated, Version 39)

Data class

Protein

Predictors

HAMAP; MF_00610; [distribution of match scores in UniProtKB];[seed alignment for MF_00610]

Names

Cytb6_f_cytF

Identifier

CYF

Protein name

RecName: Full=Apocytochrome f; Flags: Precursor;

Gene name

petA

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 (By similarity).

COFACTOR: Binds 1 heme group covalently (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 cytochrome f family.

Pfam	PF01333; Apocytochr_F_C; 1;
PRINTS	PR00610; CYTOCHROMEF; 1;
PROSITE	PS51010; CYTF; 1;
General	Signal; -; 1; trigger=Yes; Transmembrane; -; 1; trigger=Yes;

Transport, Electron transport, Heme, Iron, Metal-binding.

Cell membrane, Cell inner membrane.

Thylakoid.

Photosynthesis, Membrane, Transmembrane, Signal, Transmembrane helix.

GO:0009055; Molecular function: electron carrier activity.
GO:0015979; Biological process: photosynthesis.
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: CYF_BRARA (P36438)
Key		From		To		Description		Condition		FTGroup
METAL		36		36		Iron (heme axial ligand); via amino nitrogen (By similarity)		[FY]
METAL		60		60		Iron (heme axial ligand) (By similarity)		H
BINDING		56		56		Heme (covalent) (By similarity)		C
BINDING		59		59		Heme (covalent) (By similarity)		C

Size range:	300-342 amino acids
Related UniRules:	None
Template:	P36438 (CYF_BRARA); P23577 (CYF_CHLRE); P83793 (CYF_MASLA): [Recover all]
Scope:	Bacteria; Cyanobacteria Plastid
Fusion:	Nter: None; Cter: None
Duplicate:	None
Plasmid encoded:	None
Comments:	In LEPTE the N-terminus is unusually long, not used in seed alignment or size range. In GLOVI the first conserved heme axial ligand Phe or Tyr is a Trp, the sequence is designated atypical.