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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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pha-4, an HNF-3 homolog, specifies pharyngeal organ identity in Caenorhabditis elegans.

To build complex organs, embryos have evolved mechanisms that integrate the development of cells unrelated to one another by cell type or ancestry. Here we show that the pha-4 locus establishes organ identity for the Caenorhabditis elegans pharynx. In pha-4 mutants, pharyngeal cells are transformed into ectoderm. Conversely, ectopic pha-4 expression produces excess pharyngeal cells. pha-4 encodes an HNF-3 homolog selectively expressed in the nascent digestive tract, including all pharynx precursors at the time they are restricted to a pharyngeal fate. We suggest that pha-4 is a key component of a transcription-based mechanism to endow cells with pharyngeal organ identity.[1]

References

  1. pha-4, an HNF-3 homolog, specifies pharyngeal organ identity in Caenorhabditis elegans. Horner, M.A., Quintin, S., Domeier, M.E., Kimble, J., Labouesse, M., Mango, S.E. Genes Dev. (1998) [Pubmed]
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