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Updated: Mar 15, 2026

Isolation of Physiologically Active Thylakoids and Their Use in Energy-Dependent Protein Transport Assays
Published on: September 28, 2018
Plant mitochondria contain the protein translocase subunits TatB and TatC
Chris Carrie1, Stefan Weißenberger2, Jürgen Soll3
1Department of Biology I, Botany, Ludwig-Maximilians-Universität München, Großhaderner Strasse 2-4, Planegg-Martinsried D-82152, Germany christopher.carrie@lmu.de.
Abstract:
Twin-arginine translocation (Tat) pathways have been well-characterized in bacteria and chloroplasts. Genes encoding a TatC protein are found in almost all plant mitochondrial genomes but to date these have not been extensively investigated. For the first time it could be demonstrated that this mitochondrial-encoded TatC is a functional gene that is translated into a protein in the model plant Arabidopsis thaliana A TatB--like subunit localized to the inner membrane was also identified that is nuclear-encoded and is essential for plant growth and development, indicating that plants potentially require a Tat pathway for mitochondrial biogenesis.
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