Аннотация:Yeast cell wall (CW) consists mainly of mannoproteins and glucan and chitin (minor component). The polysaccharides are covalently bound to each other and form an integrated network. Mannoproteins are divided into three groups: SDS-extractable proteins, GPI-(glycosylphosphatidylinositol)-anchored proteins and ASL-proteins (proteins with alkali-soluble linkage). Recent studies have demonstrated that yeast CW can contain lipid microcompartments – transport vesicles – that export metabolically active compounds from the cells through the CW to the environment (Vargas et al.,2015). We suppose that GPI-proteins may be present in the CW not only as covalently strongly attached molecules, but also as non-covalently bound lipid-associated component, possibly, forming microcompartments. In this work we verified this hypothesis.