Abstract:The isolation and the characterization of one ofthe enzymes ofMicropolyspora faeni that hydrolyzes the substrate N-benzoyl-DL-phenylalanine-beta-naphthyl ester and that seems to be of medical importance are described. This enzyme (enzyme 1) was isolated with an 86-fold purification by using the following seven steps: ammonium sulfate precipitation, gel filtration through Sephadex G-150, heat treatment, chromatography on diethylaminoethyl-cellulose, rechromatography on diethylaminoethyl-Sephadex, gel filtration… Show more
mbtJ, an acetyl-hydrolase/esterase, enhanced the survival of M. tuberculosis under iron stress, affected the growth/infection efficiency in M. smegmatis, suggesting its pivotal role in the intracellular survival of bacterium.
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