In the context of catalysis, cardiac troponin itself does not act as a catalyst. However, its regulatory function in muscle contraction can be seen as a biological process where enzymatic catalysis plays a significant role. The interaction between actin and myosin involves ATP hydrolysis, which is catalyzed by the enzyme ATPase. This catalytic activity is tightly regulated by the presence of calcium ions and the binding of these ions to troponin C, which induces conformational changes that allow muscle contraction to proceed.
