PPR proteins - orchestrators of organelle RNA metabolism

Physiologia Plantarum
Aleix Gorchs Rovira, Alison G Smith

Abstract

Pentatricopeptide repeat (PPR) proteins are important RNA regulators in chloroplasts and mitochondria, aiding in RNA editing, maturation, stabilisation or intron splicing, and in transcription and translation of organellar genes. In this review, we summarise all PPR proteins documented so far in plants and the green alga Chlamydomonas. By further analysis of the known target RNAs from Arabidopsis thaliana PPR proteins, we find that all organellar-encoded complexes are regulated by these proteins, although to differing extents. In particular, the orthologous complexes of NADH dehydrogenase (Complex I) in the mitochondria and NADH dehydrogenase-like (NDH) complex in the chloroplast were the most regulated, with respectively 60 and 28% of all characterised A. thaliana PPR proteins targeting their genes.

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Citations

Apr 24, 2019·Physiologia Plantarum·Anja Krieger-LiszkayJohannes Messinger
Oct 21, 2019·The Plant Journal : for Cell and Molecular Biology·Ian D SmallOren Ostersetzer-Biran
Oct 14, 2020·FEMS Microbiology Letters·Zecheng LiuYing Huang
Oct 25, 2020·The Plant Journal : for Cell and Molecular Biology·Stéphanie DurandChristine Camilleri
Feb 27, 2021·Frontiers in Plant Science·Xinwei WangJianwei Xiao
Apr 4, 2021·International Journal of Molecular Sciences·Xinwei WangJianwei Xiao
May 27, 2021·Plant Science : an International Journal of Experimental Plant Biology·Xinwei WangJianwei Xiao

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