Formation of the Arabidopsis Pentatricopeptide Repeat Family

Formation of the Arabidopsis pentatricopeptide repeat family.

In Arabidopsis (Arabidopsis thaliana) the 466 pentatricopeptide repeat (PPR) proteins are putative RNA-binding proteins with essential roles in organelles. Roughly half of the PPR proteins form the plant combinatorial and modular protein (PCMP) subfamily, which is land-plant specific. PCMPs exhibit a large and variable tandem repeat of a standard pattern of three PPR variant motifs. The associa...

Genome Analysis Formation of the Arabidopsis Pentatricopeptide Repeat Family

Laboratoire d’Informatique, de Robotique et de Microélectronique de Montpellier, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5506, Université de Montpellier II, 34392 Montpellier cedex 5, France (E.R.); and Institut de Biotechnologie des Plantes, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8618, Université Paris-Sud, 91405 Orsay cedex, Franc...

Signature of diversifying selection on members of the pentatricopeptide repeat protein family in Arabidopsis lyrata.

Pentatricopeptide repeat (PPR) proteins compose a family of nuclear-encoded transcriptional regulators of cytoplasmic genes. They have shown dramatic expansion in copy number in plants, and although the functional importance of many remains unclear, a subset has been repeatedly implicated as nuclear restorers for cytoplasmic male sterility. Here we investigate the molecular population genetics ...

Signature of diversifying selection on members of the pentatricopeptide repeat protein (PPR) family in Arabidopsis lyrata

Pentatricopeptide repeat proteins

Mitochondria and chloroplasts host genomes inherited from their bacterial ancestors. Their biogenesis thus requires fully functional gene expression machineries. RNA metabolism in organ-elles is particular and has attracted considerable attention since it combines prokaryotic features with unique traits that evolved in their eukaryotic host cell. For a long time, most of the molecular factors g...