Studies on the Properties of Fish Actomyosin-IV
Effect of Lecithin on the ATPase Activity of Actomyosin from Fish Muscle
1968 Volume 34 Issue 5 Pages 411-414
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1968 Volume 34 Issue 5 Pages 411-414
1. To discuss the biochemical role of lecithin in the actomyosin from fish muscle, the effect of lecithin on the ATPase activity of actomyosin was investigated. The results showed that the ATPase was activated by the addition of lecithin, inactivated by the treatment with phospholipase C, and reactivated by the addition of lecithin to the treated actomyosin. From these results, it is assumed that lecithin plays an important role in activating the ATPase.
2. The effect of lecithin on the interaction of actomyosin with ATP was discussed. The results showed that the limiting concentration of ATP on the dissociation of actomyosin decreased by the addition of lecithin, and the effect was accounted for in terms of an allosteric mechanism.
