Compilation and analysis of plant mitochondrial promoter sequences:: An illustration of a divergent evolution between monocot and dicot mitochondria

被引：28

作者：

Fey, J ^{[1
]}

Maréchal-Drouard, L ^{[1
]}

机构：

[1] Univ Louis Pasteur Strasbourg 1, CNRS, Inst Biol Mol Plantes, F-67084 Strasbourg, France

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 1999年 / 256卷 / 02期

关键词：

D O I：

10.1006/bbrc.1999.0349

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

We have analyzed 67 sequences surrounding transcription initiation sites identified in higher plant mitochondria. The sequences were classified, independently for monocots and dicots, according to the presence of the CRTA core element found upstream of the first transcribed nucleotide and previously reported as an essential element of plant mitochondrial consensus promoters. This compilation provides new elements concerning the structure of consensus promoters and the relative importance of non-conserved promoters in plant mitochondria. It can be emphasized that promoter regions exhibit several differences between monocot and dicot mitochondria, presumably reflecting a divergent evolution: The sequences classified among consensus promoters as well as the distance between the first transcribed nucleotide and the core element are highly conserved in dicots while more plasticity is observed in monocots. It also appears that the proportion of promoters with neither the conserved promoter sequence nor any conserved motif is far greater in dicots than in monocots. (C) 1999 Academic Press.

引用

页码：409 / 414

页数：6

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