Predicted to enable antiporter activity and pyrimidine nucleotide-sugar transmembrane transporter activity. Predicted to be involved in UDP-N-acetylgalactosamine transmembrane transport; UDP-N-acetylglucosamine transmembrane transport; and UDP-glucuronic acid transmembrane transport. Predicted to act upstream of or within energy homeostasis and positive regulation of protein exit from endoplasmic reticulum. Predicted to be located in early endosome and endoplasmic reticulum. Predicted to be active in Golgi apparatus. Orthologous to human SLC35D3 (solute carrier family 35 member D3). [provided by Alliance of Genome Resources, Apr 2022]