label: UDP-N-acetylgalactosamine-4-sulfate sulfotransferase activity
label_lc: udp-n-acetylgalactosamine-4-sulfate sulfotransferase activity
description: "Catalysis of the reaction: 3'-phospho-5'-adenylyl sulfate + UDP-N-acetyl-D-galactosamine 4-sulfate = adenosine 3',5'-diphosphate + H+ + UDP-N-acetyl-D-galactosamine 4,6-disulfate."