Catalyzes the sulfonation of desulfo-A47934, the final step of A47934 biosynthesis. Has also weak activity in vitro with teicoplanin aglycone and teicoplanin. 3'-phosphoadenylyl sulfate + desulfo-A47934 = A47934 + adenosine 3',5'-bisphosphate + H(+) Antibiotic biosynthesis. Homodimer. Deletion mutant produces desulfo-A47934 but not A47934. Belongs to the sulfotransferase 1 family.