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Literature DB >> 3023289

Lactose and melibiose metabolism in Erwinia chrysanthemi.

J S Gray, W A Lindner, J M Brand, J P Mildenhall.

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.

Entities: Chemical Species

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Year: 1986 PMID： 3023289 PMCID： PMC213567 DOI： 10.1128/jb.168.2.886-891.1986

Source DB: PubMed Journal: J Bacteriol ISSN： 0021-9193 Impact factor: 3.490

19 in total

1. Complications in the simplest cellular enzyme assay: lysis of Escherichia coli for the assay of beta-galactosidase.

Authors: S L Putnam; A L Koch
Journal: Anal Biochem Date: 1975-02 Impact factor: 3.365

2. A SECOND PERMEASE FOR METHYL-THIO-BETA-D-GALACTOSIDE IN ESCHERICHIA COLI.

Authors: L S PRESTIDGE; A B PARDEE
Journal: Biochim Biophys Acta Date: 1965-05-04

3. Lac-plus plasmids are responsible for the strong lactose-positive phenotype found in many strains of Klebsiella species.

Authors: E C Reeve; J A Braithwaite
Journal: Genet Res Date: 1973-12 Impact factor: 1.588

4. Plasmid-determined H2S character in Escherichia coli and its relation to plasmid-carried raffinose fermentation and tetracycline resistance characters. Examination of 32 H2S-positive strains isolated during the years 1950 to 1971.

Authors: I Orskov; F Orskov
Journal: J Gen Microbiol Date: 1973-08

Lactose and melibiose metabolism in Erwinia chrysanthemi.

1. Complications in the simplest cellular enzyme assay: lysis of Escherichia coli for the assay of beta-galactosidase.

2. A SECOND PERMEASE FOR METHYL-THIO-BETA-D-GALACTOSIDE IN ESCHERICHIA COLI.

3. Lac-plus plasmids are responsible for the strong lactose-positive phenotype found in many strains of Klebsiella species.

4. Plasmid-determined H2S character in Escherichia coli and its relation to plasmid-carried raffinose fermentation and tetracycline resistance characters. Examination of 32 H2S-positive strains isolated during the years 1950 to 1971.

5. The lactose system in Klebsiella aerogenes V9A. 2. Galactoside permeases which accumulate lactose or melibiose.

6. Transport systems for galactose and galactosides in Escherichia coli. II. Substrate and inducer specificities.

7. Biochemical studies of melibiose metabolism in wild type and mel mutant strains of Salmonella typhimurium.

8. Fk-lac, an episome with unusual properties found in a wild strain of a Klebsiella species.

9. Alpha-galactosidase activity in cell-free extracts of Escherichia coli.

10. Klebsiella aerogenes strain carrying drug-resistance determinants and a lac plasmid.

1. Catabolism of raffinose, sucrose, and melibiose in Erwinia chrysanthemi 3937.