Transcriptional regulator which binds DNA consensus sequence 5'-CCTTAAC-3' (PubMed:19204119, PubMed:31767767). Plays a role in establishing and maintaining asymmetric cell fates in chemosensory AWC neurons during larval neuronal development (PubMed:19204119, PubMed:20713521, PubMed:31767767). This is achieved by repressing the expression of multiple AWC (OFF) genes, including srsx-3 and hlh-11 in the AWC (ON) neuron (PubMed:19204119). Activates expression of sox-2 in the AWC (ON) neuron (PubMed:31767767). Expressed widely, including gut, the amphid sheath glial cells, and head and tail neurons including AWC, ASE, and ASH (PubMed:19204119). Expressed in AWC (ON) olfactory neuron but not AWC (OFF) (PubMed:19204119, PubMed:31767767). At the threefold embryonic stage, expressed asymmetrically in one of the two AWC neurons (PubMed:19204119). A subset of embryos show bilateral expression in AWC neurons, but this declines after larval stage L1 (PubMed:19204119). RNAi-mediated knockdown leads to misexpression of markers of the asymmetric state of AWC neurons.