Construction and Physical Mapping of Plasmids Containing the MetA Gene of Escherichia Coli K-12

Overview

Journal Mol Gen Genet

Specialties Genetics
Molecular Biology

Date 1981 Jan 1

PMID 6457238

Citations 6

Authors

S Michaeli

E Z Ron

G Cohen

Affiliations

Soon will be listed here.

Abstract

Plasmids containing the metA gene of E. coli K-12 were constructed in vitro using pBR322 as the cloning vehicle and lambda metA transducing phage as the source of metA DNA. EcoRI digests of pBR322 and lambda metA20 were joined by ligase and plasmids carrying the metA gene were selected after transformation in a metA deletion strain. Recombinant DNA molecules contained one pBR322 fragment and one lambda metA20 fragment of 12.2 kb which was present in either of two possible orientations. Plasmids constructed by BamHI digestion of lambda metA2 contained a single bacterial DNA fragment of 5.8 kb inserted in the tet gene. Insertion of the metA fragment led to loss of resistance to tetracycline in one orientation and partial resistance in the opposite orientation.

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Homoserine O-acetyltransferase, involved in the Leptospira meyeri methionine biosynthetic pathway, is not feedback inhibited.

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Gene transfer between Escherichia coli and Enterobacter aerogenes.

Michaeli S, Ron E Mol Gen Genet. 1983; 190(1):179-81.

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Regulatory region of the metA gene of Escherichia coli K-12.

Michaeli S, Mevarech M, Ron E J Bacteriol. 1984; 160(3):1158-62.

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