title: [Demonstration of 2 enzymes with beta-galactosidase activity in Rhizobium meliloti].
abstract: The beta-galactosidase (EC 3.2.1.23) activities of wild-type Rhizobium meliloti and its lactose slow-hydrolyzing mutant have been compared. The properties of the enzyme are very different in each strain. These differences allow us to prove that two enzymes with a beta-galactosidase activity can be found in the wild-type whereas only one enzyme remains in the mutant strain.
mesh_terms: D004790:Enzyme Induction; D005696:Galactosidases / Q000378:metabolism*; D006358:Hot Temperature; D007785:Lactose / Q000378:metabolism; D009154:Mutation; D012231:Rhizobium / Q000201:enzymology* / Q000378:metabolism; D013045:Species Specificity; D001616:beta-Galactosidase / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D005696:Galactosidases; D001616:beta-Galactosidase; D007785:Lactose
vernacular_title: Mise en évidence de deux enzymes présentant une activit beta-galactosidasique chez Rhizobium meliloti.