Involved in amphid glia remodeling during entry into dauer stage by promoting the fusion of sheath amphid cells which encloses AWC neuron sensory endings (PubMed:21350017). May be involved, downstream of pvf-1, in the positioning of ray 1, the most anterior ray sensillum in the male tail (PubMed:24004945). Expressed in amphid and phasmid sheath cells, the muscular intestinal cell and the first and last intestinal cells (PubMed:12161275, PubMed:21350017). Expression in amphid and phasmid sheath cells is increased in dauer animals (PubMed:21350017). By high temperatures. The protein kinase domain is predicted to be catalytically inactive. Belongs to the protein kinase superfamily. Tyr protein kinase family.