糜蛋白酶原肌钙蛋白T亚片段对肌动球蛋白ATP酶钙离子敏感性和超沉淀的影响。
Effect of chymotryptic troponin T subfragments on the calcium ion-sensitivity of ATPase and superprecipitation of actomyosin.
作者信息
Onoyama Y, Ohtsuki I
出版信息
J Biochem. 1986 Aug;100(2):517-9. doi: 10.1093/oxfordjournals.jbchem.a121742.
Abstract
One of the chymotryptic troponin T subfragments, troponin T2, reconstituted approximately 80% of the Ca2+-sensitizing action of troponin T on actomyosin in the presence of troponin C, troponin I, and tropomyosin. This indicates that the Ca2+-regulatory property of troponin T is mostly localized in the troponin T2 region of the C-terminal 101 residues.
摘要
在存在肌钙蛋白C、肌钙蛋白I和原肌球蛋白的情况下，胰凝乳蛋白酶肌钙蛋白T亚片段之一的肌钙蛋白T2可重构肌钙蛋白T对肌动球蛋白约80%的Ca²⁺ 敏化作用。这表明肌钙蛋白T的Ca²⁺ 调节特性主要定位于C末端101个残基的肌钙蛋白T2区域。
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