The function of Ensembl gene identifier ENSG00000134490 (SLC35D4, solute carrier family 35 member D4) is as follows. Golgi-localized UDP-N-acetylglucosamine (UDP-GlcNAc) transporter that transports UDP-N-acetylglucosamine into Golgi lumen. Contributes to lysosomal targeting of NPC2, a key protein required for lysosomal cholesterol exiting, and that utilizes the mannose-6- phosphate (M6P) modification pathway for its lysosomal targeting. .