Serine/threonine-protein kinase receptor which binds TGF-beta-like ligands dbl-1 and perhaps daf-7 (PubMed:9847239, PubMed:24004951). Upon ligand binding, probably activates a TGF-beta-like signaling pathway (PubMed:9847239, PubMed:24004951). ATP + L-threonyl-[receptor-protein] = ADP + H(+) + O-phospho-L-threonyl-[receptor-protein] ATP + L-seryl-[receptor-protein] = ADP + H(+) + O-phospho-L-seryl-[receptor-protein] Interacts with sma-10 (PubMed:20502686). Interacts with drag-1 (PubMed:24004951). Expressed in pharyngeal, hypodermal and intestinal cells. Belongs to the protein kinase superfamily. TKL Ser/Thr protein kinase family. TGFB receptor subfamily.