期刊
FRONTIERS IN GENETICS
卷 12, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fgene.2021.641817
关键词
gene duplication; enzymatic classes; paralogous enzymes; enzyme evolution; function class
资金
- Posgrado en Ciencias Biologicas at the Universidad Nacional Autonoma de Mexico
- Consejo Nacional de Ciencia y Tecnologia (CONACYT) [747513]
- PAPIIT-UNAM [BV100218]
Gene duplication is a crucial process in the emergence of new genes and functions, with a high ratio of paralogs found in certain enzymatic classes among prokaryotes. Around 20-40% of prokaryotic enzymes are estimated to have paralogs, with free-living enzymes showing higher ratios compared to intracellular organisms. Similar genomic and biochemical traits are shared among phylogenetically close phyla and even some unrelated phyla with similar lifestyles, suggesting gene duplication is associated with environmental adaptation.
Gene duplication is a crucial process involved in the appearance of new genes and functions. It is thought to have played a major role in the growth of enzyme families and the expansion of metabolism at the biosphere's dawn and in recent times. Here, we analyzed paralogous enzyme content within each of the seven enzymatic classes for a representative sample of prokaryotes by a comparative approach. We found a high ratio of paralogs for three enzymatic classes: oxidoreductases, isomerases, and translocases, and within each of them, most of the paralogs belong to only a few subclasses. Our results suggest an intricate scenario for the evolution of prokaryotic enzymes, involving different fates for duplicated enzymes fixed in the genome, where around 20-40% of prokaryotic enzymes have paralogs. Intracellular organisms have a lesser ratio of duplicated enzymes, whereas free-living enzymes show the highest ratios. We also found that phylogenetically close phyla and some unrelated but with the same lifestyle share similar genomic and biochemical traits, which ultimately support the idea that gene duplication is associated with environmental adaptation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据