Complete switch from α-2,3- to α-2,6-regioselectivity in Pasteurella dagmatis β-D-galactoside sialyltransferase by active-site redesign

Complete switch from α-2,3- to α-2,6-regioselectivity in Pasteurella dagmatis β-D-galactoside sialyltransferase by active-site redesign