Rolseth S J, Fried V A, Hall B G
J Bacteriol. 1980 Jun;142(3):1036-9. doi: 10.1128/jb.142.3.1036-1039.1980.
Lactose is not itself an inducer of the lac operon, nor is it converted to an inducer by ebg+ beta-galactosidase of Escherichia coli. We report here the isolation of a mutant Ebg beta-galactosidase which is capable of converting lactose into an inducer of the lac operon.
乳糖本身并不是乳糖操纵子的诱导物,它也不能被大肠杆菌的ebg⁺β-半乳糖苷酶转化为诱导物。我们在此报告一种突变型Ebgβ-半乳糖苷酶的分离,该酶能够将乳糖转化为乳糖操纵子的诱导物。