RNA editing in kinetoplastids

Hajduk, Stephen; Ochsenreiter, Torsten (2010). RNA editing in kinetoplastids. RNA biology, 7(2), pp. 229-36. Georgetown, Tex.: Landes Bioscience 10.4161/rna.7.2.11393

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RNA editing in kinetoplastid protozoa is a post-transcriptional process of uridine insertion or deletion in mitochondrial mRNAs. The process involves two RNA species, the pre-edited mRNA and in most cases a trans-acting guide RNA (gRNA). Sequences within gRNAs define the position and extend of mRNA editing. Both mRNAs and gRNAs are encoded by mitochondrial genes in the kinetoplast DNA (kDNA), which consists of thousands of small circular DNA molecules, called minicircles, encoding thousands of gRNAs, catenated together and with a few mRNA encoding larger circles, the maxicircles, to form a huge DNA network. Editing has been shown to result in translatable mRNAs of bona fide mitochondrial genes as well as novel alternatively edited transcripts that are involved in the maintenance of the kDNA itself. RNA editing occurs within large protein-RNA complexes, editosomes, containing gRNA, preedited and partially edited mRNAs and also structural and catalytically active proteins. Editosomes are diverse in both RNA and protein composition and undergoe structural remodeling during the maturation. The compositional and structural diversity of editosomes further underscores the complexity of the RNA editing process.

Item Type:	Journal Article (Original Article)
Division/Institute:	08 Faculty of Science > Department of Biology > Institute of Cell Biology
UniBE Contributor:	Ochsenreiter, Torsten
Subjects:	500 Science > 570 Life sciences; biology
ISSN:	1547-6286
Publisher:	Landes Bioscience
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:18
Last Modified:	17 Jul 2023 06:21
Publisher DOI:	10.4161/rna.7.2.11393
PubMed ID:	20220308
Web of Science ID:	000282761300018
URI:	https://boris.unibe.ch/id/eprint/5394 (FactScience: 210135)