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小家鼠近交系C57BL/6J中的西班牙小鼠LINE-1来自两个不同的西班牙小鼠LINE-1亚家族。

Mus spretus LINE-1s in the Mus musculus domesticus inbred strain C57BL/6J are from two different Mus spretus LINE-1 subfamilies.

作者信息

Zhao Y, Daggett L P, Hardies S C

机构信息

Department of Biochemistry, University of Texas Health Science Center, San Antonio 78284-7760, USA.

出版信息

Genetics. 1996 Feb;142(2):549-55. doi: 10.1093/genetics/142.2.549.

Abstract

A LINE-1 element, LIC105, was found in the Mus musculus domesticus inbred strain, C57BL/6J. Upon sequencing, this element was found to belong to a M. spretus LINE-1 subfamily originating within the last 0.2 million years. This is the second spretus-specific LINE-1 subfamily found to be represented in C57BL/6J. Although it is unclear how these M. spretus LINE-1s transferred from M. spretus to M. m. domesticus, it is now clear that at least two different spretus LINE-1 sequences have recently transferred. The limited divergence between the C57BL/6J spretus-like LINE-1s and their closest spretus ancestors suggests that the transfer did not involve an exceptionally long lineage of sequential transpositions.

摘要

在小家鼠近交系C57BL/6J中发现了一个LINE-1元件,即LIC105。测序后发现,该元件属于一个源自近20万年内的西班牙小鼠LINE-1亚家族。这是在C57BL/6J中发现的第二个具有西班牙小鼠特异性的LINE-1亚家族。虽然尚不清楚这些西班牙小鼠LINE-1元件是如何从小鼠转移到家鼠的,但现在很清楚的是,最近至少有两个不同的西班牙小鼠LINE-1序列发生了转移。C57BL/6J中类似西班牙小鼠的LINE-1元件与其最接近的西班牙小鼠祖先之间有限的差异表明,这种转移并不涉及异常漫长的连续转座谱系。

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