Identification of a pentatricopeptide repeat RNA editing factor in Physcomitrella patens chloroplasts |
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Authors: | Mizuho Ichinose Masato UchidaMamoru Sugita |
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Institution: | Center for Gene Research, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan |
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Abstract: | The moss Physcomitrella patens has two RNA editing sites in the chloroplasts. Here we identified a novel DYW-subclass pentatricopeptide repeat (PPR) protein, PpPPR_45, as a chloroplast RNA editing factor in P. patens. Knockdown of the PpPPR_45 gene reduced the extent of RNA editing at the chloroplast rps14-C2 site, whereas over-expression of PpPPR_45 increased the levels of RNA editing at both the rps14-C2 site and its neighboring C site. This indicates that the expression level of PpPPR_45 affects the extent of RNA editing at the two neighboring sites. |
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Keywords: | RNA editing Pentatricopeptide repeat protein DYW domain Chloroplast Physcomitrella patens |
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