Tyrosine-protein kinase receptor which may be involved in the early formation of the chondrocytes. It seems to be required for cartilage and growth plate development (PubMed:10700181). Phosphorylates YWHAB, leading to induction of osteogenesis and bone formation. In contrast, has also been shown to have very little tyrosine kinase activity in vitro. May act as a receptor for wnt ligand WNT5A which may result in the inhibition of WNT3A-mediated signaling (By similarity). ATP + L-tyrosyl-[protein] = ADP + H(+) + O-phospho-L-tyrosyl-[protein] Homodimer; promotes osteogenesis. Binds YWHAB (By similarity). Interacts with WTIP (PubMed:19785987). From 9.5 to 11.5 dpc, expressed in the branchial arches, otic vesicle, limb buds, somites, craniofacial mesenchyme and tail buds. At 14.5 dpc, expressed in the developing tongue, nasal cavity, palate, adrenal gland, in the forebrain, dorsal root ganglia and in the somites. At 14.5 dpc, also detected in lung, rib cartilage, kidney and intestine (at protein level). Belongs to the protein kinase superfamily. Tyr protein kinase family. ROR subfamily.