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Light chains of chicken embryonic gizzard myosin

, : Light chains of chicken embryonic gizzard myosin. Biochimica et Biophysica Acta 535(2): 401-412

Myosin from gizzards of 15 day old chicken embryos was highly purified by ammonium sulfate fractionation in the presence of ATP and MgCl2, ultracentrifugation and Sepharose 4B chromatography. The myosin composed of H and 3 L chains as determined by sodium dodecyl sulfate (SDS) gel electrophoresis. The MW of the L chains were 23,000 (L23), 20,000 (L20), and 17,000 (L17), respectively. The amount of L23 L chain decreased and disappeared and the L17 L chain increased steadily in the course of development. The amount of L20 L chain did not change. ATPase activity of the embryonic myosin was essentially the same as that of adult myosin. The change in the L chain pattern in the course of development did not correlate to the ATPase activity. Antigenicity of the H chains in the embryonic myosin was the same as that of the adult H chains. Antibodies to L chains were not detected in the antibodies to either the embryonic or adult myosins.


PMID: 150291

DOI: 10.1016/0005-2795(78)90105-8

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