Involved in transcriptional regulation (By similarity). Required to specify left-right asymmetry of the ASE gustatory neurons, probably acting upstream of microRNA lsy-6 (PubMed:16291785, PubMed:26050091). Involved in maintaining the distinction between somatic and germ cells, perhaps acting by repressing germ cell-specific genes in somatic cells (PubMed:26050091). Localization in nuclear speckles/punctae is dynamic, appearing to move. Expressed ubiquitously (PubMed:16291785). Earliest expression is at the 50-cell stage, and persists throughout embryogenesis, larval stages and adulthood (PubMed:16291785). RNAi-mediated knockdown causes ectopic expression of gcy-5 in the ASEL gustatory neuron.