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Nat Protoc. 2011 Jul 7;6(8):1105-20. doi: 10.1038/nprot.2011.347.

Using the Q system in Drosophila melanogaster.

Author information

  • 1The Solomon H. Snyder Department of Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. cpotter@jhmi.edu

Abstract

In Drosophila, the GAL4/UAS/GAL80 repressible binary expression system is widely used to manipulate or mark tissues of interest. However, complex biological systems often require distinct transgenic manipulations of different cell populations. For this purpose, we recently developed the Q system, a second repressible binary expression system. We describe here the basic steps for performing a variety of Q system experiments in vivo. These include how to generate and use Q system reagents to express effector transgenes in tissues of interest, how to use the Q system in conjunction with the GAL4 system to generate intersectional expression patterns that precisely limit which tissues will be experimentally manipulated and how to use the Q system to perform mosaic analysis. The protocol described here can be adapted to a wide range of experimental designs.

PMID:
21738124
[PubMed - indexed for MEDLINE]
PMCID:
PMC3982322
Free PMC Article

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