Predicted to enable hyaluronan synthase activity. Predicted to be involved in extracellular matrix assembly; hyaluronan biosynthetic process; and polysaccharide biosynthetic process. Predicted to act upstream of or within positive regulation of urine volume and renal water absorption. Predicted to be located in several cellular components, including Golgi membrane; endoplasmic reticulum membrane; and lysosome. Predicted to be active in plasma membrane. Orthologous to human HAS2 (hyaluronan synthase 2).