猪心脏、比目鱼肌和腓肠肌中的肌球蛋白ATP酶
Myosin ATPase in swine heart, "soleus" and "gastrocnemius".
作者信息
Taylor A W, Cerny F, Keul J
出版信息
Biomedicine. 1981 Mar;35(1):13-5.
Myosin was isolated from heart ventricle, soleus and gastrocnemius of freshly slaughtered swine. ATPase activities (mu moles Pi/mg/min) were found to be higher in heart muscle (Ca++ activated = .39 +/- .04; EDTA activated = .59 +/- .06) than in ST soleus (Ca++ activated = .23 +/- .02; EDTA activated = .48 +/- .05) or FT gastrocnemius (Ca++ activated = .32 +/- .03; EDTA activated = .52 +/- .04). The results suggest that the myosin of swine cardiac muscle is different from the myosin of skeletal muscle, or at least, the rate of hydrolysis of ATP on the myosin sites is different between these tissues. There is a difference in relationship of ATPase between heart and skeletal muscle in swine compared to that seen in other mammalian species.
从刚屠宰的猪的心室、比目鱼肌和腓肠肌中分离出肌球蛋白。发现心肌中的ATP酶活性（微摩尔无机磷/毫克/分钟）更高（钙离子激活 = 0.39 ± 0.04；乙二胺四乙酸激活 = 0.59 ± 0.06），高于慢肌比目鱼肌（钙离子激活 = 0.23 ± 0.02；乙二胺四乙酸激活 = 0.48 ± 0.05）或快肌腓肠肌（钙离子激活 = 0.32 ± 0.03；乙二胺四乙酸激活 = 0.52 ± 0.04）。结果表明，猪心肌的肌球蛋白与骨骼肌的肌球蛋白不同，或者至少，这些组织中肌球蛋白位点上ATP的水解速率不同。与其他哺乳动物物种相比，猪的心脏和骨骼肌之间的ATP酶关系存在差异。
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