studies with metal-depleted galactosyltransferase activated with zn2+ or co2+ and apo-alpha-lactalbumin or ca2+-saturated alpha-lactalbumin show that the ca2+ , zn2+ , and apo-alpha-lactalbumin are all able to bind with galactosyltransferase to produce an active lactose synthase complex .
C0016964
galactosyltransferase
C0022952
lactose synthase