Match the following.
Column IColumn IIi. Troponina. Blocks the attachment site for the myosin cross bridgeii. Tropomyosinb. Has a myosin binding siteiii. Actinc. Complex of 3 polypeptide units
i). → c., ii). → a., iii). →b.
The thin filament is made of three separate proteins: actin, troponin, and tropomyosin. Actin has a myosin binding site for the cross bridge formation.
Troponin is a complex of three Polypeptide units(Troponin C, I and T). In a relaxed muscle, tropomyosin blocks the attachment site for the myosin cross bridge, thus preventing contraction.