Characterization of a recent retroposon insertion on mouse Chromosome 2 and localization of the cognate parental gene to Chromosome 11

Characterization of a recent retroposon insertion on mouse Chromosome 2 and localization of the... The genomic sequence on mouse Chromosome (Chr) 2 corresponding to a previously identified novel cDNA has been characterized. The genomic organization of this locus, adjacent to the beta 2 microglobulin gene, has the properties of a processed gene or retroposon including the presence of a short flanking direct repeat, a polyadenylation signal/poly A tract, and the absence of introns. Analysis of inbred and wild-derived Mus DNAs reveals the retroposon to be a feature only of M. m. domesticus subspecies, suggesting that the insertion event is relatively recent. This notion is supported by the presence of an open reading frame and the lack of sequence divergence in the flanking direct repeats. The complex chromatin configuration characteristic of this region in mouse and human is not, therefore, related to this cDNA. The cognate parental gene encoding the cDNA was mapped to Chr 11. A further, more ancient retroposon present in many Mus species localizes to Chr 17. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

Characterization of a recent retroposon insertion on mouse Chromosome 2 and localization of the cognate parental gene to Chromosome 11

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Publisher
Springer Journals
Copyright
Copyright © 1998 by Springer-Verlag New York Inc
Subject
Life Sciences; Cell Biology; Anatomy; Zoology
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s003359900697
Publisher site
See Article on Publisher Site

Abstract

The genomic sequence on mouse Chromosome (Chr) 2 corresponding to a previously identified novel cDNA has been characterized. The genomic organization of this locus, adjacent to the beta 2 microglobulin gene, has the properties of a processed gene or retroposon including the presence of a short flanking direct repeat, a polyadenylation signal/poly A tract, and the absence of introns. Analysis of inbred and wild-derived Mus DNAs reveals the retroposon to be a feature only of M. m. domesticus subspecies, suggesting that the insertion event is relatively recent. This notion is supported by the presence of an open reading frame and the lack of sequence divergence in the flanking direct repeats. The complex chromatin configuration characteristic of this region in mouse and human is not, therefore, related to this cDNA. The cognate parental gene encoding the cDNA was mapped to Chr 11. A further, more ancient retroposon present in many Mus species localizes to Chr 17.

Journal

Mammalian GenomeSpringer Journals

Published: Mar 28, 2009

References

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