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Inhibitory effect of squid (Todarodes pacificus) paramyosin on actomyosin ATPase and on superprecipitation
K Konno1, M Matsuura, M Fujita
1Department of Food Science, Faculty of Fisheries, Hokkaido University, Japan.
Abstract:
1. Paramyosin from squid mantle muscle inhibited the Mg-ATPase and the superprecipitation activities of actomyosin. 2. The inhibition was detected only when paramyosin forms a cofilament with myosin. 3. ATP-induced changes in the morphology of the cofilament of myosin and paramyosin are involved in the inhibition by paramyosin.