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Electrophoretic Separation And Immunological Identification Of Type 2X Myosin Heavy Chain In Rat Skeletal Muscle.
W. LaFramboise, M. Daood, R. Guthrie, P. Moretti, S. Schiaffino, M. Ontell
Published 1990 · Biology, Medicine
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One slow and three fast myosin heavy chains have been described in typical skeletal muscles of the adult rat using immunocytochemical analysis. Electrophoretic isolation and immunochemical identification of these four isoforms has not been achieved. An electrophoretic procedure is described which, by altering the cross-linkage and polymerization kinetics of 5% polyacrylamide gels, allows resolution of these four distinct myosin heavy chains. Using specific monoclonal antibodies and double immunoblotting analysis, the identity and electrophoretic migration order of the myosin heavy chains was established to be: 2A less than 2X less than 2B less than beta/slow.
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