Journal Article

Uncovering a Link between a Plastid Translocon Component and Rhomboid Proteases Using Yeast Mitochondria-Based Assays

Katherine Karakasis, Darcie Taylor and Kenton Ko

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 48, issue 4, pages 655-661
Published in print April 2007 | ISSN: 0032-0781
Published online April 2007 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcm031
Uncovering a Link between a Plastid Translocon Component and Rhomboid Proteases Using Yeast Mitochondria-Based Assays

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  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

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Rhomboid proteases are present in bacteria, insects, yeasts, parasites, mammals and plants. These proteases are part of the regulated intramembrane proteolysis mechanism for controlling processes such as development, stress response, lipid metabolism and mitochondrial membrane remodeling. Specific rhomboid protease substrates linked to these processes have been identified from insects to mammals, but not for plants. Identification of a link is a key step for elucidating the role of each rhomboid protease. Here, using a yeast mitochondria-based approach, we report evidence of a potential link between a plastid translocon component and organellar rhomboid proteases. This identification expands the types of processes involving regulated intramembrane proteolysis potentially to include at least one aspect of plastid protein transport.

Keywords: Arabidopsis; Mutants; Plastid translocon; Rhomboid proteases; Yeast mitochondria

Journal Article.  4371 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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