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

skn-1, a maternally expressed gene required to specify the fate of ventral blastomeres in the early C. elegans embryo.

By the 4-cell stage of C. elegans embryogenesis, a ventral blastomere, called EMS, is already committed to producing pharyngeal and intestinal cell types. Recessive, maternal-effect mutations in the gene skn-1 prevent EMS from producing both pharyngeal and intestinal cells. In skn-1 mutant embryos, EMS instead produces hypodermal cells and body wall muscle cells, much like its sister blastomere. Genetic analysis suggests that the skn-1 gene product is also required post-embryonically for development of the intestine. We have cloned and sequenced the skn-1 gene and describe sequence similarities to the basic regions of bZIP transcription factors. We propose that the maternally expressed skn-1 gene product acts to specify the fate of the EMS blastomere.[1]


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