Regulation of newly evolved enzymes. I. Selection of a novel lactase regulated by lactose in Escherichia coli
Publication information:
Hall, and Hartl. (March) 1974. “Regulation of Newly Evolved Enzymes. I. Selection of a Novel Lactase Regulated by Lactose in Escherichia Coli”. Genetics 76: 391-400.
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).