Thought to regulate endocytosis in coelomocytes through modulation of phospholipase C activity. Possible acetylcholine receptor. Expressed in coelomocytes. Worms display a lack of uptake of GFP from the pseudocoelom into coelomocytes, suggesting a decrease or absence of endocytosis in coelomocytes. Mutants also display a slightly dumpy appearance with a low penetrance defect in distal tip cell leader function, indicating defects in coelomocyte function. Belongs to the ligand-gated ion channel (TC 1.A.9) family. Acetylcholine receptor (TC 1.A.9.1) subfamily.