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. 1974 Mar;76(3):391-400.
doi: 10.1093/genetics/76.3.391.

Regulation of newly evolved enzymes. I. Selection of a novel lactase regulated by lactose in Escherichia coli

B G Hall, D L Hartl

Regulation of newly evolved enzymes. I. Selection of a novel lactase regulated by lactose in Escherichia coli

B G Hall et al. Genetics. 1974 Mar.

Abstract

Thirty-four lactose-utilizing strains of E. coli were selected from a lac Z deletion strain. In 31 of these, the synthesis of the newly evolved lactase is regulated by lactose. The lactase activity in all the strains is indistinguishable from the ebg(+) activity identified by Campbell, Lengyel and Langridge (1973).

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References

    1. Proc Natl Acad Sci U S A. 1973 Jun;70(6):1841-5 - PubMed