4-aminosalicylate + (7,8-dihydropterin-6-yl)methyl diphosphate <=> 2-hydroxy-7,8-dihydropteroate + diphosphate
4-aminosalicylate + (7,8-dihydropterin-6-yl)methyl diphosphate <=> 2-hydroxy-7,8-dihydropteroate + diphosphate