Plant mitochondria contain the protein translocase subunits TatB and TatC.
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.
Department of Biology I, Botany, Ludwig-Maximilians-Universität München, Großhaderner Strasse 2-4, Planegg-Martinsried D-82152, Germany christopher.carrie@lmu.de.
Chris
0000-0002-4240-4674
C
Carrie
Department of Biology I, Botany, Ludwig-Maximilians-Universität München, Großhaderner Strasse 2-4, Planegg-Martinsried D-82152, Germany.
Stefan
S
Weißenberger
Department of Biology I, Botany, Ludwig-Maximilians-Universität München, Großhaderner Strasse 2-4, Planegg-Martinsried D-82152, Germany Munich Center for Integrated Protein Science, CiPSM, Ludwig-Maximilians-Universität München, Feodor-Lynen-Strasse 25, Munich D-81377, Germany.
Jürgen
J
Soll
D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D029968:Escherichia coli Proteins / Q000737:chemistry; D020043:Genes, Essential; D017343:Genes, Plant; D054629:Genome, Mitochondrial; D049452:Green Fluorescent Proteins / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D008928:Mitochondria / Q000378:metabolism*; D051336:Mitochondrial Membranes / Q000378:metabolism; D024101:Mitochondrial Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D008970:Molecular Weight; D010458:Peptidyl Transferases / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D010802:Phylogeny; D021122:Protein Subunits / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D016415:Sequence Alignment
D029681:Arabidopsis Proteins; D029968:Escherichia coli Proteins; D024101:Mitochondrial Proteins; D021122:Protein Subunits; D049452:Green Fluorescent Proteins; D010458:Peptidyl Transferases
Mitochondria; Molecular evolution; Plant molecular biology; Protein import; Protein translocation