Chloroplast protein import component Toc34 (IPR005688)

Short name: Toc34

Overlapping homologous superfamilies

Family relationships



Two integral outer envelope GTPases, Toc34 and Toc86, are proposed to regulate the recognition and translocation of nuclear-encoded preproteins during the early stages of protein import into chloroplasts. The cytosolic region of Toc34 reveals 34% alpha-helical and 26% beta-strand structure and is stabilised by intramolecular electrostatic interaction. Toc34 binds both chloroplast preproteins and isolated transit peptides in a guanosine triphosphate- (GTP-) dependent mechanism [PMID: 11827540].

GO terms

Biological Process

GO:0006886 intracellular protein transport

Molecular Function

GO:0015450 P-P-bond-hydrolysis-driven protein transmembrane transporter activity

Cellular Component

GO:0009707 chloroplast outer membrane

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.