Troponin is attached to the tropomyosin sitting in the groove between actin filaments in muscle tissue.
Troponin has three subunits, TnC, TnT, and TnI
· Troponin-C has calcium binding ability and has no diagnostic value
· Troponin-T binds the troponin tropomyosin comple,
· Troponin-I is an inhibitory protein.
Cardiac Troponin I is a cardiac muscle protein with a molecular weight of 24 kilodaltons.
Cardiac Troponin T is present in fetal skeletal muscle.
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