title: Isoelectric focusing and immunoblotting of the platelet membrane glycoprotein complex IIb. IIIA following urea solubilization.
abstract: Effective solubilization of the major platelet membrane component, the glycoprotein IIb.IIIa complex, can be achieved with 8 M urea. By avoiding nonionic detergents in the separation medium it is possible to obtain clear immunoblot patterns without interference from the isoelectric focusing matrix. Upon running on a pH 4.25-5.25 immobilized pH gradient, immunoreactive bands corresponding to the nonreduced IIb.IIIa complex stain between pH 4.5 and 5.0. The method appears of significant potential utility in evaluating glycoprotein IIb.IIIa polymorphisms under different clinical conditions.
authors.affiliation: Istituto di Scienze Farmacologiche, Facoltà di Farmacia, Università degli Studi di Milano, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Gianazza
authors.forename: R
authors.initials: R
authors.lastname: Frattini
authors.forename: S
authors.initials: S
authors.lastname: Michelagnoli
authors.forename: M
authors.initials: M
authors.lastname: Cassinotti
authors.forename: C R
authors.initials: CR
authors.lastname: Sirtori
mesh_terms: D006801:Humans; D006863:Hydrogen-Ion Concentration; D015151:Immunoblotting / Q000379:methods*; D007525:Isoelectric Focusing / Q000379:methods*; D010980:Platelet Membrane Glycoproteins / Q000235:genetics / Q000302:isolation & purification*; D011110:Polymorphism, Genetic; D012995:Solubility; D014508:Urea
chemical_list: D010980:Platelet Membrane Glycoproteins; D014508:Urea