Immunochemical Comparison of Myosins from Chicken Cardiac, Fast White, Slow Red, and Smooth Muscle*

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Abstract
The immunochemical properties of myosins from fast white, slow red, cardiac, and smooth muscle were studied by immunodiffusion, and the fluorescent antibody techniques. Antibody against the heavy chain of each myosin generally distinguished the homologous antigen from the other three types of myosin. Antibody against the cardiac L-II light chain of myosin reacted with that of slow red fibers, but antibody against the L-II light chain of skeletal muscle myosin reacted only with the homologous protein. The reaction of the heavy chain of each myosin with its antibody could take place in the presence of sodium dodecyl sulfate.

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