label: [heparan sulfate]-glucosamine 3-sulfotransferase 3 activity
label_lc: [heparan sulfate]-glucosamine 3-sulfotransferase 3 activity
description: "Catalysis of the reaction: 3'-phosphoadenylyl sulfate + alpha-D-glucosaminyl-(heparan sulfate)(n) = 3-sulfo-alpha-D-glucosaminyl-(heparan sulfate)(n) + adenosine 3',5'-bisphosphate + H+."