Receptor for hyaluronic acid (HA) (By similarity). Involved in cell motility (By similarity). When hyaluronan binds to HMMR, the phosphorylation of a number of proteins, including the PTK2/FAK1 occurs. May also be involved in cellular transformation and metastasis formation, and in regulating extracellular-regulated kinase (ERK) activity (By similarity). May act as a regulator of adipogenisis (By similarity). Interacts with ANKRD26 (By similarity). Interacts with DYNLL1 (By similarity). Interacts with FAM83D/CHICA (By similarity).