Modulates pharyngeal pumping activity, at least in part by regulating expression of the acetylcholinesterase genes ace-1 and ace-2 (PubMed:11896189, PubMed:15355315). Interacts (via PID 2 domain) with apl-1 (via cytoplasmic domain). Expressed in the pharynx (including pharyngeal muscle and nerve cells), ventral nerve cord and tail neurons. Expressed in the pharynx from three-fold stage embryos to adulthood. Phosphorylated. Embryonic lethality or larval arrest (PubMed:11896189, PubMed:15355315). Heterozygous animals are viable and display increased pharyngeal pumping rates associated with reduced acetylcholinesterase activity (PubMed:11896189, PubMed:15355315).