The contribution of RNAs and retroposition to evolutionary novelties

被引：106

作者：

Brosius, J ^{[1
]}

机构：

[1] Univ Munster, Inst Expt Pathol, ZMBE, D-4400 Munster, Germany

来源：

GENETICA | 2003年 / 118卷 / 2-3期

关键词：

genetic novelties; genome evolution; genome expansion and shrinkage; retroposition; survival of reverse transcriptase;

D O I：

10.1023/A:1024141306559

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Retroposition is an ancient process dating back to the conversion of RNA to DNA genomes. Nevertheless, it continues to make tremendous structural and functional contributions to extant genomes. This process and the endurance, or even renaissance, of an RNA world in many lineages sheds a new light on the Central Dogma of Molecular Biology. The question of why reverse transcriptase has survived billions of years without an apparent cellular function is discussed. Retroposition constitutes one of the pervasive conflicts, in this case between host genome on one hand and mobile genetic elements on the other, that fuel the evolutionary process. It is obvious that retroposition has, thus far, contributed numerous useful novelties to genomes.

引用

页码：99 / 116

页数：18

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