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. 1986 Nov;168(2):886–891. doi: 10.1128/jb.168.2.886-891.1986

Lactose and melibiose metabolism in Erwinia chrysanthemi.

J S Gray, W A Lindner, J M Brand, J P Mildenhall
PMCID: PMC213567  PMID: 3023289

Abstract

A Lac+ mutant of Erwinia chrysanthemi was isolated from the Lac- wild type on lactose agar. beta-Galactosidase was expressed independently of lactose transport in both the mutant and the wild type, and neither strain expressed thiogalactoside transacetylase. Lactose transport and alpha-galactosidase, constitutive in the Lac+ strain, were coordinately induced in the Lac- strain by melibiose and raffinose but not by isopropyl-beta-D-thiogalactopyranoside or thiomethyl-beta-D-galactopyranoside. Melibiose was a strong inhibitor of both the melibiose- and the raffinose-induced lactose permeases, whereas raffinose was a strong inhibitor of only the raffinose-induced lactose permease.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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