[Production of proteinases associated with Bifidobacterium adolescentis 94-BIM cell wall].
Bifidobacterium adolescentis 94-BIM was found to produce cell-wall bound proteolytic enzymes active at acidic, neutral, and alkaline pH values. The solubilization of proteinases with 0.5% Triton X-100 substantially improved the yield of the enzymes. The most active accumulation of cell-bound proteinases was observed in the third hour of cultivation at rates of 156.7, 179.5, and 111.1 U/(mg h), measured at pH 2.5, 7.0, and 9.0, respectively. It is suggested that the cell-wall bound proteinases of B. adolescentis 94-BIM are the precursors of the enzymes secreted into the medium.
Samartsev
A A
AA
Institute of Microbiology, Belarussian Academy of Sciences, ul. Kuprevicha 2, Minsk, 220141 Belarus.
Astapovich
N I
NI
Novik
G I
GI
D001644:Bifidobacterium / Q000201:enzymology*; D002473:Cell Wall / Q000201:enzymology*; D010450:Endopeptidases / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D017830:Octoxynol
D017830:Octoxynol; D010450:Endopeptidases
Produktsiia assotsiirovannykh s kletochnoĭ stenkoĭ proteinaz Bifidobacterium adolescentis 94-BIM.