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Preparation of mycelial and yeast-like spheroplasts fromMucor rouxii by a lytic enzyme preparation fromPenicillium islandicum
Authors:Emma Reyes  Monique Novaes-Ledieu  Concepción Garcia Mendoza
Institution:1. Jaime Ferrán Institute of Microbiology, CSIC, Joaquín Costa 32, Madrid 6, Spain
Abstract:Spheroplasts ofMucor rouxii were prepared from mycelial and yeast-like cells by use of aPenicillium islandicum enzymatic complex. This enzyme preparation, which presents high chitosanase and chitinase activities, was produced by growingP. islandicum either on mycelial or yeast-like walls ofM. rouxii. The presence of magnesium sulfate as an osmotic stabilizer was critical to obtain high yields of spheroplasts from mycelial forms. In the case of yeast-like cells, pretreatment with β-mercaptoethanol followed by magnesium sulfate was essential for extensive spheroplast production.
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