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Science 292 (5519): 1164-1167

Copyright © 2001 by the American Association for the Advancement of Science

Control of a Genetic Regulatory Network by a Selector Gene

Kirsten A. Guss,* Craig E. Nelson,* Angela Hudson, Mary Ellen Kraus, Sean B. Carrolldagger

The formation of many complex structures is controlled by a special class of transcription factors encoded by selector genes. It is shown that SCALLOPED, the DNA binding component of the selector protein complex for the Drosophila wing field, binds to and directly regulates the cis-regulatory elements of many individual target genes within the genetic regulatory network controlling wing development. Furthermore, combinations of binding sites for SCALLOPED and transcriptional effectors of signaling pathways are necessary and sufficient to specify wing-specific responses to different signaling pathways. The obligate integration of selector and signaling protein inputs on cis-regulatory DNA may be a general mechanism by which selector proteins control extensive genetic regulatory networks during development.

Howard Hughes Medical Institute and Laboratory of Molecular Biology, University of Wisconsin, Madison, WI 53706, USA.
*   These authors contributed equally to this work.

dagger    To whom correspondence should be addressed. E-mail: sbcarrol{at}

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