Transcriptional analysis of the Grp gene, a genomic homolog of the retrotransposon gypsy gag gene, in Drosophila melanogaster

Transcriptional analysis of the Grp gene, a genomic homolog of the retrotransposon gypsy gag... In the present work, we studied the Grp gene (CG4680, Gag related protein) expression at the transcriptional level. It was found that at the embryonic and larval stages of D. melanogaster development the Grp expression proceeds at a low level, but it significantly increases at the adult stage. Adult individuals display a tissue-specific expression: an eleveated level of transcription is observed in the gut tissues, but not in the chitin carcass, head, and gonads. Since the gut may potentially be a primary barrier for the penetration of a viral infection, we conducted a comparative analysis of Grp gene transcription in D. melanogaster strains differing in the presence of active copies of the gypsy errantivirus and in the status of the flamenco gene controlling sensitivity to errantiviral infections. No noticeable differences in the level of Grp gene transcription were revealed. Thus, the Grp gene is not a pseudogene, but it is a functional gene of the D. melanogaster genome whose role remains to be elucidated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Transcriptional analysis of the Grp gene, a genomic homolog of the retrotransposon gypsy gag gene, in Drosophila melanogaster

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2011 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795411080138
Publisher site
See Article on Publisher Site

Abstract

In the present work, we studied the Grp gene (CG4680, Gag related protein) expression at the transcriptional level. It was found that at the embryonic and larval stages of D. melanogaster development the Grp expression proceeds at a low level, but it significantly increases at the adult stage. Adult individuals display a tissue-specific expression: an eleveated level of transcription is observed in the gut tissues, but not in the chitin carcass, head, and gonads. Since the gut may potentially be a primary barrier for the penetration of a viral infection, we conducted a comparative analysis of Grp gene transcription in D. melanogaster strains differing in the presence of active copies of the gypsy errantivirus and in the status of the flamenco gene controlling sensitivity to errantiviral infections. No noticeable differences in the level of Grp gene transcription were revealed. Thus, the Grp gene is not a pseudogene, but it is a functional gene of the D. melanogaster genome whose role remains to be elucidated.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Aug 19, 2011

References

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