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Chloroplast RNA metabolism

Stern, David B
Hanson, Maureen R
Published in Annual Review of Plant Biology. 2010, vol. 61, p. 125-55
Abstract The chloroplast genome encodes proteins required for photosynthesis, gene expression, and other essential organellar functions. Derived from a cyanobacterial ancestor, the chloroplast combines prokaryotic and eukaryotic features of gene expression and is regulated by many nucleus-encoded proteins. This review covers four major chloroplast posttranscriptional processes: RNA processing, editing, splicing, and turnover. RNA processing includes the generation of transcript 5' and 3' termini, as well as the cleavage of polycistronic transcripts. Editing converts specific C residues to U and often changes the amino acid that is specified by the edited codon. Chloroplasts feature introns of groups I and II, which undergo protein-facilitated cis- or trans-splicing in vivo. Each of these RNA-based processes involves proteins of the pentatricopeptide motif-containing family, which does not occur in prokaryotes. Plant-specific RNA-binding proteins may underpin the adaptation of the chloroplast to the eukaryotic context.
Keywords Amino Acid MotifsChloroplasts/genetics/metabolismPlant Proteins/chemistry/metabolismPlants/genetics/metabolismRNA Processing, Post-TranscriptionalRNA, Chloroplast/genetics/metabolismRNA-Binding Proteins/chemistry/metabolism
PMID: 20192740
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Article (Published version) (2 MB) - document accessible for UNIGE members only Limited access to UNIGE
Research group Génétique moléculaire des chloroplastes
Project FNS: 3100 AO.117712
(ISO format)
STERN, David B, GOLDSCHMIDT-CLERMONT, Michel P., HANSON, Maureen R. Chloroplast RNA metabolism. In: Annual Review of Plant Biology, 2010, vol. 61, p. 125-55. https://archive-ouverte.unige.ch/unige:33523

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Deposited on : 2014-01-22

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