Tropomyosin from bovine muscle is a protein that plays a crucial role in the regulation of muscle contraction. It is a component of the thin filaments in muscle fibers, alongside actin and troponin. Tropomyosin is a two-chain alpha-helical protein that binds to actin, preventing myosin from interacting with actin and thus inhibiting muscle contraction. When a muscle is stimulated, calcium ions bind to troponin, causing a conformational change in the troponin-tropomyosin complex. This change moves tropomyosin away from the actin-binding sites on myosin, allowing the myosin heads to bind and initiate the power stroke, leading to muscle contraction. Tropomyosin is essential for the proper functioning of muscles and is a key player in the calcium-mediated regulation of muscle contraction.
The CAS Registry Mumber 9067-53-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,6 and 7 respectively; the second part has 2 digits, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 9067-53: (6*9)+(5*0)+(4*6)+(3*7)+(2*5)+(1*3)=112 112 % 10 = 2 So 9067-53-2 is a valid CAS Registry Number.
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