Abstract
Release by phosphatidylinositol-specific phospholipase C is frequently provided as evidence for membrane anchorage of a protein through phosphatidylinositol. Demonstration that the enzyme removes a lipophilic moiety from the protein is stronger evidence, and is presented here for members of the Ly-6 family of lymphocyte antigens: Ly-6A, C and E. Treatment of these molecules with the enzyme greatly increased their electrophoretic mobilities on polyacrylamide gels containing nonionic detergent. Furthermore, the mobilities of the digested, but not native Ly-6 molecules, were independent of detergent. This analytical method was applied to pure antigen, radiolabelled immunoprecipitate, or immunochemically detected Ly-6 antigens on blots.
Published Version
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