A mutation defining ultrainduction of the Escherichia coli gal operon
- 1 October 1991
- journal article
- research article
- Published by American Society for Microbiology in Journal of Bacteriology
- Vol. 173 (19) , 6294-6296
- https://doi.org/10.1128/jb.173.19.6294-6296.1991
Abstract
Tn10 insertion in the galS (ultrainduction factor) gene of Escherichia coli allows the gal operon to be constitutively expressed at a very high level, equal to that seen in a delta galR strain in the presence of an inducer. The insertion has been mapped by criss-cross Hfr matings and by marker rescue into Kohara phages at 46 min on the E. coli chromosome.Keywords
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