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Cell Rep. 2012 Oct 25;2(4):1014-24. doi: 10.1016/j.celrep.2012.09.010. Epub 2012 Oct 12.

A survey of 6,300 genomic fragments for cis-regulatory activity in the imaginal discs of Drosophila melanogaster.

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1
Department of Biochemistry and Molecular Biophysics, Columbia University Medical Center, 701 W. 168th Street, HHSC 1104, New York, NY 10032, USA.

Abstract

Over 6,000 fragments from the genome of Drosophila melanogaster were analyzed for their ability to drive expression of GAL4 reporter genes in the third-instar larval imaginal discs. About 1,200 reporter genes drove expression in the eye, antenna, leg, wing, haltere, or genital imaginal discs. The patterns ranged from large regions to individual cells. About 75% of the active fragments drove expression in multiple discs; 20% were expressed in ventral, but not dorsal, discs (legs, genital, and antenna), whereas ∼23% were expressed in dorsal but not ventral discs (wing, haltere, and eye). Several patterns, for example, within the leg chordotonal organ, appeared a surprisingly large number of times. Unbiased searches for DNA sequence motifs suggest candidate transcription factors that may regulate enhancers with shared activities. Together, these expression patterns provide a valuable resource to the community and offer a broad overview of how transcriptional regulatory information is distributed in the Drosophila genome.

PMID:
23063361
PMCID:
PMC3483442
DOI:
10.1016/j.celrep.2012.09.010
[Indexed for MEDLINE]
Free PMC Article

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