单词	troponin
释义	troponin /ˈtrəʊpə(ʊ)nɪn / noun [mass noun] Biochemistry A globular protein complex involved in muscle contraction. It occurs with tropomyosin in the thin filaments of muscle tissue.Actin, myosin, and troponin and tropomyosin were isolated from rabbit back muscle.... The tropomyosin and troponin proteins on the actin filament provide the switch. The addition of regulatory proteins, troponin and tropomyosin, is known to increase the sliding speed of thin filaments in the in vitro motility assay. Origin 1960s: from tropomyosin + -n- + -in1.
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