ArticlePlant physiology2010
Pea chloroplast DnaJ-J8 and Toc12 are encoded by the same gene and localized in the stroma.
Article in Plant physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 35 citations in OpenAlex.
- Functional Interaction Between Toc75 POTRA1 Domain and Tic22-III in the Intermembrane Space During Chloroplast Protein Import.Plant direct · 2026Article
- A molecular atlas of plastid and mitochondrial proteins reveals organellar remodeling during plant evolutionary transitions from algae to angiosperms.PLoS biology · 2024Article
- Genome-wide identification of DnaJ gene family inFrontiers in plant science · 2023Article
- Polypeptide Transport-Associated Domains of the Toc75 Channel Protein Are Located in the Intermembrane Space of Chloroplasts.Plant physiology · 2016Article
- Article
- A chloroplast-targeted DnaJ protein contributes to maintenance of photosystem II under chilling stress.Journal of experimental botany · 2014Article
- The protein translocation systems in plants - composition and variability on the example of Solanum lycopersicum.BMC genomics · 2013Article
- Evolution of chloroplast J proteins.PloS one · 2013Article
- Protein import into the photosynthetic organelles ofSymbiosis (Philadelphia, Pa.) · 2012Article
- Nucleoid-enriched proteomes in developing plastids and chloroplasts from maize leaves: a new conceptual framework for nucleoid functions.Plant physiology · 2012Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Toc12 is a novel J domain-containing protein identified in pea (Pisum sativum) chloroplasts. It was shown to be an integral outer membrane protein localizing in the intermembrane space of the chloroplast envelope. Furthermore, Toc12 was shown to associate with an intermembrane space Hsp70, suggesting that Toc12 is important for protein translocation across the chloroplast envelope. Toc12 shares a high degree of sequence similarity with Arabidopsis (Arabidopsis thaliana) DnaJ-J8, which has been suggested to be a soluble protein of the chloroplast stroma. Here, we isolated genes encoding DnaJ-J8 from pea and found that Toc12 is a truncated clone of one of the pea DnaJ-J8s. Protein import analyses indicate that Toc12 and DnaJ-J8s possess a cleavable transit peptide and are localized in the stroma. Arabidopsis mutants with T-DNA insertions in the DnaJ-J8 gene show no defect in chloroplast protein import. Implications of these results in the energetics and mechanisms of chloroplast protein import are discussed.
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