title: Purification of the temperature-specific surface antigen of Paramecium primaurelia with its glycosyl-phosphatidylinositol membrane anchor.
abstract: The membrane form of the temperature-specific G surface antigen of Paramecium primaurelia strain 156 has been purified by a novel procedure utilizing solubilization by detergent, ammonium sulfate precipitation, and high-performance liquid chromatography. The surface antigen, which was prepared in a nondenatured state containing a glycosyl-phosphatidylinositol membrane anchor, migrated as a single band upon electrophoresis in sodium dodecyl sulfate-polyacrylamide gels. Following cleavage of the purified surface antigen by a phosphatidylinositol-specific phospholipase C from Bacillus thuringiensis, the soluble form was released with the unmasking of a particular glycosidic immunodeterminant called the cross-reacting determinant. The purification protocol described here will now permit further biochemical and biophysical characterization of the nondenatured membrane form of Paramecium surface antigens.
authors.affiliation: Centre de Génétique Moléculaire, UPR 2420, Centre National de la Recherche Scientifique (CNRS), Gif-sur-Yvette, France.
authors.forename: N
authors.initials: N
authors.lastname: Azzouz
authors.forename: J L
authors.initials: JL
authors.lastname: Ranck
authors.forename: Y
authors.initials: Y
authors.lastname: Capdeville
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000737:chemistry / Q000302:isolation & purification*; D002462:Cell Membrane / Q000737:chemistry / Q000276:immunology; D011232:Chemical Precipitation; D002851:Chromatography, High Pressure Liquid; D004591:Electrophoresis, Polyacrylamide Gel; D017261:Glycosylphosphatidylinositols / Q000737:chemistry / Q000302:isolation & purification; D010247:Paramecium / Q000276:immunology*; D043265:Phosphatidylinositol Diacylglycerol-Lyase; D054801:Phosphoinositide Phospholipase C; D010727:Phosphoric Diester Hydrolases; D012995:Solubility; D013696:Temperature
chemical_list: D000954:Antigens, Surface; D017261:Glycosylphosphatidylinositols; D010727:Phosphoric Diester Hydrolases; D054801:Phosphoinositide Phospholipase C; D043265:Phosphatidylinositol Diacylglycerol-Lyase