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Genomics
Article
License: Elsevier Non-Commercial
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Genomics
Article . 2009
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Genomics
Article . 2009
License: Elsevier Non-Commercial
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Quality of regulatory elements in Drosophila retrogenes

Authors: Bai, Yongsheng; Casola, Claudio; Betrán, Esther;

Quality of regulatory elements in Drosophila retrogenes

Abstract

Retrogenes are processed copies of genes that are inserted into new genomic regions and that acquire new regulatory elements from the sequences in their surroundings. Here we use a comparative approach of phylogenetic footprinting and a non-comparative approach of measuring motif over-representation in retrogenes in order to describe putative elements present in cis-regulatory regions of 94 retrogenes recently described in Drosophila. The detailed examination of the motifs found in the core promoter regions of retrogenes reveals an abundance of the DNA replication-related element (DRE), the Initiator (Inr), and a new over-represented motif that we call the GCT motif. Parental genes also show an abundance of DRE and Inr motifs, but these do not seem to have been carried over with retrogenes. In particular, we also examined motifs upstream of retrogenes expressed in adult testis and were able to identify 6 additional over-represented motifs. Comparative analyses provide data on the conservation and origin of some of these motifs and reveal 15 additional conserved motifs in these retrogenes. Some of those conserved motifs are sequences bound by known transcription factors, while others are novel motifs. In this report we provide the first genome-wide data on which specific cis-regulatory regions can be recruited by retrogenes after they are inserted into new coding regions in the genome. Future experiments are needed to determine the function and role of the new elements presented here.

Keywords

Male, Base Sequence, Retroelements, Amino Acid Motifs, Molecular Sequence Data, Genes, Insect, Drosophila melanogaster, Enhancer Elements, Genetic, Gene Expression Regulation, Testis expression, Testis, Retrogene, Genetics, Regulatory motifs, Animals, Drosophila, Amino Acid Sequence, Promoter Regions, Genetic, Conserved Sequence

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    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
6
Average
Average
Average
gold