Enables HNK-1 sulfotransferase activity. Predicted to be involved in proteoglycan biosynthetic process. Predicted to act upstream of or within learning and long-term memory. Predicted to be located in Golgi membrane. Predicted to be integral component of membrane. Orthologous to human CHST10 (carbohydrate sulfotransferase 10). [provided by Alliance of Genome Resources, Apr 2022]