A new member of the psToc159 family contributes to distinct protein targeting pathways in pea chloroplasts.

ABSTRACT: Protein import into chloroplasts relies on specific targeting of preproteins from the cytosol to the organelles and coordinated translocation processes across the double envelope membrane. Here, two complex machineries constitute the so called general import pathway, which consists of the TOC and TIC complexes (translocon at the outer envelope of chloroplasts and translocon at the inner envelope of chloroplasts, respectively). The majority of canonical preproteins feature an N-terminal cleavable transit peptide, which is necessary for targeting and recognition at the chloroplast surface by receptors of TOC, where Toc159 acts as the primary contact site. We identified a non-canonical preprotein without the classical transit peptide, the superoxide dismutase (FSD1), which was then used in ch

SUBMITTER: Chang W 

PROVIDER: S-EPMC4036074 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature