CELE_VC5.4, VC5.4

mys-1 encodes a MYST family histone acetyltransferase orthologous to Drosophila EG0007.7, human TIP60, and S. cerevisiae Esa1p; during vulval development, mys-1 acts as Class C synMuv gene: mys-1 mutations enhance mutations in components of the C. elegans NuRD and Rb repressor complexes that negatively regulate expression of genes required for vulval induction; in addition, mys-1(RNAi) enhances mutations in pha-4, which encodes a FoxA transcription factor required for pharyngeal organogenesis; mys-1 mutations also cause a synthetic slow growth phenotype in combination with mutations in the MCD-1 zinc-finger protein; thus, mys-1 activity is essential for proper cell fate specification of different cell types at different times during C. elegans development.

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