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Comparative Study
. 2007 Jun;89(6):678-86.
doi: 10.1016/j.ygeno.2007.02.007. Epub 2007 Apr 12.

B1 SINEs in different rodent families

Natalia A Veniaminova  1 , Nikita S Vassetzky, Dmitri A Kramerov
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Free article
Comparative Study

B1 SINEs in different rodent families

Natalia A Veniaminova et al. Genomics. 2007 Jun.
Free article

Abstract

B1 SINEs were studied in 22 families covering all major rodent lineages. The number of B1 copies considerably varies, from 1 x 10(4) in Geomyidae to 1 x 10(6) in Myodonta. B1 sequences can be divided into three main structural variants: B1 with a 20-bp tandem duplication (found in Gliridae, Sciuridae, and Aplodontidae), B1 with a 29-bp duplication (found in other families), and proto-B1 without duplication (pB1). These variants can be further subdivided according to their characters, including specific 7-, 9-, or 10-bp deletions. Different B1 subfamilies predominate in different rodent families. The analysis of B1 variants allowed us to propose possible pathways for the evolution of this SINE in the context of rodent evolution.

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