FEATURES

FAMILY

AIG1/Toc34/Toc159-like paraseptin GTPase family

DESCRIPTION

Also known as TOC34_PEA, TOC34, IAP34, OEP34. GTPase involved in protein precursor import into chloroplasts. Seems to recognize chloroplast-destined precursor proteins and regulate their presentation to the translocation channel through GTP hydrolysis. Homodimer and monomer. Part of the TOC core complex that includes a protein for the specific recognition of transit peptides surrounded by a ring composed of four proteins forming translocation channels, and four to five GTP-binding proteins providing energy. This core complex can interact with components of the TIC complex to form a larger import complex. Chloroplastic protein precursor such as prSS (precursor of the RuBisCO small subunit) interacts with these complexes. The TOC complex contains a specific subset of polar lipids such as digalactosyldiacylglyceride (DGDG), phosphatidylcholine (PC) and phosphatidylglycerol (PG). TOC34 interacts at least with TOC75.

EXTERNAL LINKS

TOC34

Mutations

Mutation(s) distribution

Mutations table