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Nisman, B.; Kayser, A.; Demailly, J.; Genin, C.
CEA Saclay, 91 - Gif-sur-Yvette (France)1961
CEA Saclay, 91 - Gif-sur-Yvette (France)1961
AbstractAbstract
[en] Isopropyl-thio-galactoside (IPTG), an inducer of 3-galactosidase, makes it possible to synthesise this enzyme in vitro with the subcellular structure (P1). The enzyme is isolated from the bacteria Escherichia coli K 12 which are inductive but not induced. The incorporation of radioactive amino-acids, which is stimulated by the presence of an inducer, was studied during the course of the enzyme synthesis. Saccharose suppresses the induction of β-galactosidase. The presence of a specific inhibitor in the structure studied is considered. (authors)
[fr]
L'isopropylthiogalactoside (IPTG), inducteur de la 3-galactosidase, permet la synthese in vitro de cette enzyme dans la structure subcellulaire (P1) isolee a partir des bacteries d'Escherichia coli K 12, inductibles mais non induites. L'incorporation d'acides amines radioactifs, stimulee par la presence d'inducteur, a ete etudiee au cours de la synthese de l'enzyme. Le saccharose supprime l'induction de la 3-galactosidase. La presence du represseur specifique dans la structure etudiee est consideree. (auteurs)Original Title
Synthese in vitro de β-galactosidase induite dans une structure subcellulaire d'Escherichia coli (1961)
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1961; 4 p; 7 refs.
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