Esterase SeE of Streptococcus equi ssp. equi is a novel nonspecific carboxylic ester hydrolase.

ABSTRACT: Extracellular carboxylic ester hydrolases are produced by many bacterial pathogens and have been shown recently to be important for virulence of some pathogens. However, these hydrolases are poorly characterized in enzymatic activity. This study prepared and characterized the secreted ester hydrolase of Streptococcus equi ssp. equi (designated SeE for S. equi esterase). SeE hydrolyzes ethyl acetate, acetylsalicylic acid, and tributyrin but not ethyl butyrate. This substrate specificity pattern does not match those of the three conventional types of nonspecific carboxylic ester hydrolases (carboxylesterases, arylesterases, and acetylesterases). To determine whether SeE has lipase activity, a number of triglycerides and vinyl esters were tested in SeE-catalyzed hydrolysis. SeE does not hydro

SUBMITTER: Xie G 

PROVIDER: S-EPMC2693102 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature