Inhibition ofE. coli ATPase activity by a troponin component,TN-I,and by mitochondrial ATPase inhibitor |
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| Authors: | H. Hagiwara H. Hasebe S. Yamazaki Y. Tamaura Y. Inada |
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| Affiliation: | (1) Laboratory of Biological Chemistry, Tokyo Institute of Technology, Ookayama, Meguroku, Tokyo 152, (Japan) |
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| Abstract: | Summary The enzymic activity of Mg2+-or Ca2+-stimulated ATPase fromEscherichia coli was inhibited by one of the troponin components, TN-I, and by mitochondrial ATPase inhibitor (F1-inhibitor). The inhibitory ability of component TN-I against Mg2+-stimulated ATPase activity was lost after digestion of component TN-I with trypsin. The Mg2+-stimulated ATPase activity inhibited by component TN-I was completely restored by the addition of another troponin component, TN-C. |
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