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Spatial regulation of Antennapedia and bithorax gene expression by the Polycomb locus in Drosophila.
Transcripts encoded by six of the homeotic lethal complementation groups within the Antennapedia and bithorax gene complexes (ANT-C and BX-C) accumulate primarily in nonoverlapping regions of the embryonic central nervous system (CNS). It has been previously proposed that the maintenance of these selective patterns of expression involve hierarchical cross-regulatory interactions among ANT-C and BX-C loci. Selective expression of the ANT-C and BX-C also involves regulation by a number of unlinked genetic loci, including the Polycomb (Pc) locus. Here we show that the ANT-C and BX-C transcript distribution patterns are dramatically altered in the CNS of Pc- embryos. We discuss these altered patterns of expression in the context of different models for the spatial regulation of ANT-C and BX-C gene expression.[1]References
- Spatial regulation of Antennapedia and bithorax gene expression by the Polycomb locus in Drosophila. Wedeen, C., Harding, K., Levine, M. Cell (1986) [Pubmed]
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