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Updated: May 11, 2026

Efficient Polyethylene Glycol (PEG) Mediated Transformation of the Moss Physcomitrella patens
Published on: April 19, 2011
Architecture of the PPR gene family in the moss Physcomitrella patens
Mamoru Sugita1, Mizuho Ichinose1, Mizuki Ide1
1Center for Gene Research; Nagoya University; Chikusa-ku; Nagoya, Japan.
Abstract:
Pentatricopeptide repeat (PPR) proteins are widespread in eukaryotes and in particular, include several hundred members in land plants. The majority of PPR proteins are localized in mitochondria and plastids, where they play a crucial role in various aspects of RNA metabolism at the post-transcriptional level in gene expression. However, many of their functions remain to be characterized. In contrast to vascular plants, the moss Physcomitrella patens has only 105 PPR genes. This number may represent a minimum set of PPR proteins required for post-transcriptional regulation in plant organelles. Here, we review the overall structure of the P. patens PPR gene family and the current status of the functional characterization of moss PPR proteins.
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