Patterns of insertion and deletion in Mammalian genomes.

Patterns of insertion and deletion in Mammalian genomes.
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DOI:
10.2174/138920207783406479
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发表时间:
2007-09
期刊:
影响因子:
2.6
通讯作者:
Tao S
Tao S
中科院分区:
生物学4区
文献类型:
--
作者:
Fan Y;Wang W;Ma G;Liang L;Shi Q;Tao S

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核苷酸插入和缺失(indels)是造成序列比对中间隙的原因。插入缺失是分子水平上进化变化的主要来源之一。我们检查了 19 种哺乳动物基因组中的插入和缺失模式,发现哺乳动物基因组中的缺失事件比插入更常见。当间隙长度增加时,插入和缺失的数量都迅速减少,并且单核苷酸插入缺失是所有插入缺失事件中最常见的。插入和删除的频率可以通过幂律很好地描述。
Nucleotide insertions and deletions (indels) are responsible for gaps in the sequence alignments. Indel is one of the major sources of evolutionary change at the molecular level. We have examined the patterns of insertions and deletions in the 19 mammalian genomes, and found that deletion events are more common than insertions in the mammalian genomes. Both the number of insertions and deletions decrease rapidly when the gap length increases and single nucleotide indel is the most frequent in all indel events. The frequencies of both insertions and deletions can be described well by power law.
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