GO:0001537

N-acetylgalactosamine 4-O-sulfotransferase activity

Details: 
Catalysis of the reaction: 3'-phosphoadenosine 5'-phosphosulfate + N-acetyl-D-galactosamine = adenosine 3',5'-bisphosphate + N-acetyl-D-galactosamine 4-sulfate. [EC:2.8.2.-, GOC:ai]
Evidence Code: 
IEA