초록

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Abstract ▼ AI-Helper

The enzymes lytic to red yeast cell wall, which were produced by Penicillium lilacinum ATCC 36010 and Bacillus pumilus No 41, hydrolyzed an extracellular mannan from Rhodotonla glutinis IFO 0695. mannan was arranged with $\beta$-1,3 and $\beta$-1,4 linkages alternatively. Using...

The enzymes lytic to red yeast cell wall, which were produced by Penicillium lilacinum ATCC 36010 and Bacillus pumilus No 41, hydrolyzed an extracellular mannan from Rhodotonla glutinis IFO 0695. mannan was arranged with $\beta$-1,3 and $\beta$-1,4 linkages alternatively. Using this mannan, substrate specificities of these enzymes were investigated. The one from Penicillium lilacinum was an unique mannanase which hydrolyzed $\beta$-1,3 mannoside bond and the other from B. pumilus was a new type of mannanase which cleaved $\beta$-1,4 mannoside bond with requirement of the existence of $\beta$-1,3 linkage on the reducing side. Both enzymes released two kinds of oligosaccharide from mannan, respectively. However, the enzyme from Pen lilacinum produced tetrasaccharide and disaccharide and one of them, tetrasaccharide, was hydrolyzed to disaccharide further. The one from B. pumilus released tetrasaccharide and hexasaccharide from mannan finally.