The beta-glucosidases of porcine kidney.
Can J Biochem, 1977/2;55(2):140-5.
Kanfer JN, Mumford RA, Raghavan SS
PMID: 191159
Abstract
Some of the properties of a partially purified particle bound and soluble beta-glucosidase (EC 3.2.1.21) from pig kidney were compared. The soluble beta-glucosidase (1) hydrolyzed 4-methylumbelliferyl-beta-D-glucoside (4-MU-beta-D-glucoside) 17 alpha-estradiol 3beta-glucoside. 17 alpha-estradiol 17beta-glucoside, and salicin, but not glucosylceramide, (2) possessed a broad pH optimum (5.5-7.0), (3) had an isoelectric point of 4.9, and (4) was inhibited by Triton X-100. Several compounds were found to be competitive inhibitors of its hydrolytic activity, gluconolactam and estrone beta-glucoside being the most effective. In contrast, a particulate beta-glucodidase purified from the same tissue (1) had an acidic pH optimum (5.0), (2) was stimulated by sodium taurocholate and 'Gaucher's factor' for the hydrolysis of both 4-MU-beta-glucosidase and glucosylceramide, and (3) was capable of catalyzing a transglucosylation reaction employing 4-MU-beta-D-glucoside or glucosylceramide as the glucosyl donor, and [14C]ceramide as acceptor.
MeSH terms
Animals; Estradiol; Estrogens, Conjugated (USP); Glucosidases; Glucosides; Glycoside Hydrolases; Glycosphingolipids; Hymecromone; Kidney; Kinetics; Swine; Temperature
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