en
Scientific article
English

Chloroplast RNA metabolism

Published inAnnual review of plant biology, vol. 61, p. 125-155
Publication date2010
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.

eng
Keywords
  • Amino Acid Motifs
  • Chloroplasts/genetics/metabolism
  • Plant Proteins/chemistry/metabolism
  • Plants/genetics/metabolism
  • RNA Processing, Post-Transcriptional
  • RNA, Chloroplast/genetics/metabolism
  • RNA-Binding Proteins/chemistry/metabolism
Citation (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. 125–155. doi: 10.1146/annurev-arplant-042809-112242
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Article (Published version)
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Identifiers
ISSN of the journal1543-5008
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