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  • Title: Molecular characterization of a novel yeast cell-wall acid phosphatase cloned from Kluyveromyces marxianus.
    Author: Yoda K, Ko JH, Nagamatsu T, Lin Y, Kaibara C, Kawada T, Tomishige N, Hashimoto H, Noda Y, Yamasaki M.
    Journal: Biosci Biotechnol Biochem; 2000 Jan; 64(1):142-8. PubMed ID: 10705459.
    Abstract:
    A novel Kluyveromyces marxianus gene that encodes an acid phosphatase, Pho610, was cloned in Saccharomyces cerevisiae. The deduced amino acid sequence was distinct from S. cerevisiae phosphatases but similar to some fungal enzymes. A peculiar feature of the sequence is that it has hydrophobic stretches both at the N- and C-termini, which is a characteristic of the precursors of glycosylphosphatidylinositol(GPI)-anchored proteins. When the gene was expressed in S. cerevisiae, the active enzyme was recovered in the periplasmic fraction by glucanase digestion. The Pho610 polypeptide was highly glycosylated and a significant portion was covalently linked to the cell-wall glucan. The enzyme was secreted when the C-terminal region was truncated to remove the GPI signal. Therefore, Pho610 is a novel cell-wall protein having an enzyme activity.
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