Article (Scientific journals)
Induction of a Streptomyces Cacaoi Beta-Lactamase Gene Cloned in S. Lividans
Lenzini, V. M.; Magdalena, J.; Fraipont, Claudine et al.
1992In Molecular and General Genetics, 235 (1), p. 41-8
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Abstract :
[en] The previously cloned class A beta-lactamase gene (bla) of Streptomyces cacaoi was shown to be inducible by beta-lactam compounds in the host organism S. lividans. A regulatory region of 2.75 kb was identified and the nucleotide sequence determined. It contained four open reading frames (ORFs) of which only two were complete and required for induction. ORF1-ORF2 exerted a positive regulatory effect on the expression of bla. Inactivation of ORF1 or of ORF2 resulted not only in the loss of induction, but also in a 30- to 60-fold decrease in the basal (non-induced) level of beta-lactamase production. ORF1 codes for a DNA-binding protein related to the AmpR repressor/activator, which controls the expression of ampC (class C beta-lactamase) genes in several Enterobacteria.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Lenzini, V. M.;  Université de Liège - ULiège > Centre d'Ingénierie des Protéines
Magdalena, J.;  Université de Liège - ULiège > Centre d'Ingénierie des Protéines
Fraipont, Claudine ;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Joris, Bernard ;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Matagne, André  ;  Université de Liège - ULiège > Laboratoire d'Enzymologie, Centre d'Ingénierie des Protéines
Dusart, Jean;  Université de Liège - ULiège > Centre d'Ingénierie des Protéines
Language :
English
Title :
Induction of a Streptomyces Cacaoi Beta-Lactamase Gene Cloned in S. Lividans
Publication date :
October 1992
Journal title :
Molecular and General Genetics
ISSN :
0026-8925
Publisher :
Springer, Germany
Volume :
235
Issue :
1
Pages :
41-8
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 December 2009

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