Predicted to enable hexosyltransferase activity. Acts upstream of or within chondroitin sulfate metabolic process; extracellular matrix organization; and skeletal system development. Predicted to be located in Golgi cisterna membrane. Predicted to be integral component of membrane. Is expressed in several structures, including alimentary system; genitourinary system; integumental system; nervous system; and sensory organ. Orthologous to human CSGALNACT1 (chondroitin sulfate N-acetylgalactosaminyltransferase 1). [provided by Alliance of Genome Resources, Apr 2022]