Cis- and trans-splicing of group II introns in plant mitochondria

被引：181

作者：

Bonen, Linda ^{[1
]}

机构：

[1] Univ Ottawa, Dept Biol, Ottawa, ON K1N 6N5, Canada

来源：

MITOCHONDRION | 2008年 / 8卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

intron; splicing; editing; evolution; ribozyme; plant mitochondria;

D O I：

10.1016/j.mito.2007.09.005

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Group II-type introns in the mitochondrial genes of flowering plants belong to the ribozymic, mobile retroelement family, but not all exhibit conventional structural features and some follow unusual splicing pathways. Moreover, several introns have been disrupted by DNA rearrangements, so that separately-transcribed precursors undergo splicing in trans. RNA processing in plant mitochondria has the added complexity of C-to-U RNA editing which also sometimes occurs within core intron structures or at exon sites very close to introns. It appears that mitochondrial introns in flowering plants have followed quite different evolutionary pathways than other group II introns. (C) 2007 Elsevier B.V. and Mitochondria Research Society. All rights reserved.

引用

页码：26 / 34

页数：9

共 80 条

[1] Evolutionary origin of a plant mitochondrial group II intron from a reverse transcriptase/maturase-encoding ancestor [J].