Evolutionary characteristics of exons expressed at different abundance levels in mammals
Evolutionary characteristics of exons expressed at different abundance levels in mammals
复制标题
哺乳动物不同丰度水平表达的外显子的进化特征
DOI:
10.1007/s11434-009-0535-2
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发表时间:
2009-10
期刊:
影响因子:
--
通讯作者:
Hu WeiHong
中科院分区:
文献类型:
--
作者:
Zhang XiaoYan;Zheng BingRong;Fang Lin;Xiao ChunJie;Yu HaiJing;Ye Jia;Li Jie;Li Xin;Hu WeiHong
With comparative genomics approaches, we evaluated the evolutionary characteristics of conservation of exons which are expressed abundantly, moderately or lowly in mammals. Using non-coding regions and pseudogenes as controls, sequence identity, phastCons andKa/Ksanalyses were carried out and our results showed that as the exons of high abundance are highly conserved, the minor and low exons also showed conservative characteristics in evolution. Our findings suggested that the exons with less abundance which constitute a large proportion of distinct species in transcriptome of organisms are under functional constraint and might play certain roles in enriching biological complexity in the evolution of organisms.
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