General Properties of Beta-Galactosidase of Xanthomonas campestris

Author:

Frank Joseph F.1,Somkuti George A.1

Affiliation:

1. Eastern Regional Research Center, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, Philadelphia, Pennsylvania 19118

Abstract

Partially purified β-galactosidase of Xanthomonas campestris required 32 to 37�C and pH 5.5 to 5.8 for optimum activity. The enzyme had low affinity for lactose hydrolysis ( K m = 22 mM) and was inhibited by thiol group reagents, ethylenediaminetetraacetic acid, galactose, and d -galactal.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

Reference16 articles.

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3. The determination of enzyme inhibitor constants;Dixon M.;Biochem. J.,1953

4. Occurrence of glycoside hydrolases in plant pathogenic and related bacteria;Hayward A. C.;J. Appl. Bacteriol.,1977

5. Induction and general properties of fl-galactosidase and B3-galactoside permease in Pseudomonas BAL-31;Hidalgo C.;J. Bacteriol.,1977

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