“Western Blotting”: Electrophoretic transfer of proteins from sodium dodecyl sulfate-polyacrylamide gels to unmodified nitrocellulose and radiographic detection with antibody and radioiodinated protein A

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Abstract

A simple and efficient procedure was employed for the electrophoretic transfer of proteins from sodium dodecyl sulfate-polyacrylamide gels to sheets of pure, unmodified nitrocellulose. Immobilized proteins could then be radiographically visualized in situ by reaction with specific antibody and the subsequent binding of radioiodinated Staphylococcus protein A to the immune complexes. The detection of murine leukemia virus antigens in complex cellular lysates was used to demonstrate the efficacy of this technique.

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    Present address: Tumor Virology Laboratory, The Salk Institute, Post Office Box 85800, San Diego, Calif. 92138.

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