Аннотация:Cell wall (CW) protects the cells and participates in stress response. During the stress induced by ethanol yeasts form biofilms. Recently the participation of protein Bgl2p in the process of biofilm formation during cultivation in the presence of ethanol was demonstrated (Moreno-Garcia et al., 2017). Glucanosyltransglycosylase Bgl2p, one of the major proteins of the CW of numerous species of yeast has the ability to form amyloid-like fibrils in vitro (Kalebina et al., 2008).It is important to study the amyloidogenic protein Bgl2p in culture media containing ethanol because there are reasons to believe that these are model conditions for sherry fermentation.