Regulator of cell fate decisions in multiple lineages. Specifically, functions as a determination factor that specifies sensory organ identity in precursor cells. Probably also involved in cell type specification of Malpighian tubules. In absence of cut gene external sensory organs are transformed into chordotonal organs. Detected in many cells in the central nervous system, all external sensory organs, some peripheral neurons, and in the non-neural cells of the spiracles and the Malpighian tubules. Cell-specific pattern of expression. Broadly expressed during embryonic development. Asn-1791 may participate in regulating DNA-binding activity by promoting homo- and heterodimerization. Belongs to the CUT homeobox family.