ExPASy Proteomics Server

Accession	MF_01308
Dates	29-NOV-2002 (Created) 25-NOV-2009 (Last updated, Version 28)

Data class

Protein

Predictors

HAMAP; MF_01308; [distribution of match scores in UniProtKB];[seed alignment for MF_01308]

Names

CemA

Identifier

CEMA

Protein name

RecName: Full=envelope membrane protein, chloroplastic;

Gene name

cemA

Identifier

PCXA

Protein name

RecName: Full=Proton extrusion protein pcxA;

Gene name

pcxA

FUNCTION: May be involved in proton extrusion. Indirectly promotes efficient inorganic carbon uptake into chloroplasts (By similarity).

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

FUNCTION: Involved in light-induced Na(+)-dependent proton extrusion. Also seems to be involved in CO(2) transport (By similarity).

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

SIMILARITY: Belongs to the cemA family.

Pfam	PF03040; CemA; 1;
General	Transmembrane; -; 2-4; trigger=Yes;

Membrane, Transmembrane.

Plastid inner membrane.

Cell membrane, Cell inner membrane.

Transport, Ion transport, Hydrogen ion transport.

GO:0015078; Molecular function: hydrogen ion transmembrane transporter activity.
GO:0015992; Biological process: proton transport.

GO:0009706; Cellular component: chloroplast inner membrane.

GO:0005886; Cellular component: plasma membrane.

Size range:	226-501 amino acids
Related UniRules:	None
Template:	Q37050 (CEMA_CHLRE)
Scope:	Bacteria; Cyanobacteria Plastid
Fusion:	Nter: None; Cter: None
Duplicate:	in SYNY3
Plasmid encoded:	None
Comments:	The amino-terminus is very variable. A number of organisms have inserts; CHLRE, LEPTE, SCEOB, STAPU, STIHE and have therefore been made atypical.