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Fibrous proteins form due to crosslinks between collagen molecules (myosin and actin). Collagen consists of 3 helical polypeptides wound around each other to form a rope-like structure. Every third amino acid in each polypeptide is a glycine molecule where hydrogen bonding occurs, holding three strands together.

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Are the bundle of His is not involved in pumping blood since it has no contractile proteins?

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What can Contractile proteins are found in?

Contractile proteins are found in what?


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