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. 1998 Dec;150(4):1497-511.
doi: 10.1093/genetics/150.4.1497.

A genetic screen of the Drosophila X chromosome for mutations that modify Deformed function

B Florence  1 , W McGinnis
Affiliations

A genetic screen of the Drosophila X chromosome for mutations that modify Deformed function

B Florence et al. Genetics. 1998 Dec.

Abstract

We have screened the Drosophila X chromosome for genes whose dosage affects the function of the homeotic gene Deformed. One of these genes, extradenticle, encodes a homeodomain transcription factor that heterodimerizes with Deformed and other homeotic Hox proteins. Mutations in the nejire gene, which encodes a transcriptional adaptor protein belonging to the CBP/p300 family, also interact with Deformed. The other previously characterized gene identified as a Deformed interactor is Notch, which encodes a transmembrane receptor. These three genes underscore the importance of transcriptional regulation and cell-cell signaling in Hox function. Four novel genes were also identified in the screen. One of these, rancor, is required for appropriate embryonic expression of Deformed and another homeotic gene, labial. Both Notch and nejire affect the function of another Hox gene, Ultrabithorax, indicating they may be required for homeotic activity in general.

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