Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 30, Issue 2, Pages 97-105Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibs.2004.12.006
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Funding
- NIAID NIH HHS [AI 14102, R01 AI014102] Funding Source: Medline
- NIGMS NIH HHS [GM 42188, R01 GM042188] Funding Source: Medline
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Most mitochondrial mRNAs in kinetoplastids require editing, that is, the posttranscriptional insertion and deletion of uridine nucleotides that are specified by guide RNAs and catalyzed by multiprotein complexes. Recent studies have identified many of the proteins in these complexes, in addition to some of their functions and interactions. Although much remains unknown, a picture of highly organized complexes is emerging that shows that the complex that catalyzes the central steps of editing is partitioned into distinct insertion and deletion editing subcomplexes. These subcomplexes coordinate hundreds of ordered catalytic steps that function to produce a single mature mRNA. The dynamic processes, which might entail interactions among multiprotein complexes and changes in their composition and conformation, remain to be elucidated.
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