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The human gene SLC35A2 encodes the UDP-galactose transporter (Miura et al. 1996). It is located on the Golgi membrane and mediates the antiport of UDP-Gal into the Golgi lumen in exchange for UMP. This transporter is also known to transport UDP-N-acetylgalactosamine (UDP-GalNAc) by the same antiport mechanism (Segawa et al. 2002).