HAMAP

Accession	MF_00642
Dates	26-MAY-2003 (Created) 10-OCT-2011 (Last updated, Version 36)

Data class

Protein

Predictors

HAMAP; MF_00642; [distribution of match scores in UniProtKB];[seed alignment for MF_00642]

Names

PSII_PsbE

Identifier

PSBE

Protein name

RecName: Full=Cytochrome b559 subunit alpha; AltName: Full=PSII reaction center subunit V;

Gene name

psbE

FUNCTION: This b-type cytochrome is tightly associated with the reaction center of photosystem II and possibly is part of the water-oxidation complex (By similarity).

SUBUNIT: Heterodimer of an alpha subunit and a beta subunit (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 psbE/psbF family.

Pfam	PF00283; Cytochrom_B559; 1; PF00284; Cytochrom_B559a; 1;
PIRSF	PIRSF000036; PsbE; 1;
TIGRFAMs	TIGR01332; Cyt_b559_alpha; 1;
PROSITE	PS00537; CYTOCHROME_B559; 1;

Photosynthesis, Photosystem II, Heme, Iron, Metal-binding, Transport, Electron transport.

Cell membrane, Cell inner membrane.

Thylakoid.

Membrane, Transmembrane, Transmembrane helix.

GO:0009055; Molecular function: electron carrier activity.
GO:0005506; Molecular function: iron ion binding.
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: PSBE_SYNY3 (P09190)
Key		From		To		Description		Condition		FTGroup
TOPO_DOM		Nter		18		Stromal (Potential)
TRANSMEM		19		39		Helical; (Potential)
TOPO_DOM		40		Cter		Lumenal (Potential)
METAL		23		23		Iron (heme axial ligand); shared with beta subunit (By similarity)		H

Size range:	73-84 amino acids
Related UniRules:	MF_00643 (PSBF)
Template:	P69383 (PSBE_SPIOL); P09190 (PSBE_SYNY3); Q8DIP0 (PSBE_THEEB): [Recover all]
Scope:	Bacteria; Cyanobacteria Plastid
Fusion:	Nter: None; Cter: None
Duplicate:	None
Plasmid encoded:	None