Bov-B-mobilized SINEs in vertebrate genomes

Gene. 2008 Jan 15;407(1-2):75-85. doi: 10.1016/j.gene.2007.09.021. Epub 2007 Oct 5.

Abstract

Two new short retroposon families (SINEs) have been found in the genome of springhare Pedetes capensis (Rodentia). One of them, Ped-1, originated from 5S rRNA, while the other one, Ped-2, originated from tRNA-derived SINE ID. In contrast to most currently active mammalian SINEs mobilized by L1 long retrotransposon (LINE), Ped-1 and Ped-2 are mobilized by Bov-B, a LINE family of the widely distributed RTE clade. The 3' part of these SINEs originates from two sequences in the 5' and 3' regions of Bov-B. Such bipartite structure of the LINE-derived part has been revealed in all Bov-B-mobilized SINEs known to date (AfroSINE, Bov-tA, Mar-1, and Ped-1/2), which distinguishes them from other SINEs with only a 3' LINE-derived part. Structural analysis and the distribution of Bov-B LINEs and partner SINEs supports the horizontal transfer of Bov-B, while the SINEs emerged independently in lineages with this LINE.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Base Sequence
  • Gene Transfer, Horizontal*
  • Genome / genetics*
  • Molecular Sequence Data
  • RNA, Ribosomal, 5S / genetics
  • Rodentia / genetics*
  • Short Interspersed Nucleotide Elements / genetics*

Substances

  • RNA, Ribosomal, 5S