Removal of covalently bound inositol from Torpedo acetylcholinesterase and mammalian alkaline phosphatases by deamination with nitrous acid. Evidence for a common membrane-anchoring structure
1987
Our earlier evidence suggested that both acetylcholinesterase and alkaline phosphatase are anchored to the cell surface via covalently-attached phosphatidylinositol [Low, Futerman, Ferguson & Silman (1986) Trends Biochem. Sci. 11, 212-215]. We now present chemical data, based upon a nitrous acid deamination reaction, showing that in both proteins the phosphatidylinositol moiety is attached through a glycosidic linkage to a sugar residue bearing a free amino group.
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