is there a protein that is involved in how flexible someones body is? what is it/what its function in increasing the ability to stretch?

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  • 2 months ago
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    Yes, collagen. Also, fibrillin is involved. Specifically the cross-linking of fibrillin in collagen containing connective tissue. The more cross-linking of fibrillin in the collagen connective tissue fiber matrix, the less flexibility. However, without enough fibrillin cross-linking, your bodily structures can lack stability they need and can have problems, like Marfan's syndrome. Think of different kinds of ropes. The more strands bundled together, the more strength, but it will also be stiffer. Thinner ropes will be more flexible, but not be able to hold as much weight.

    "Collagen /ˈkɒlədʒɪn/ is the main structural protein in the extracellular matrix in the various connective tissues in the body. As the main component of connective tissue, it is the most abundant protein in mammals,[1] making up from 25% to 35% of the whole-body protein content. Collagen consists of amino acids bound together to form a triple helix of elongated fibril[2] known as a collagen helix. It is mostly found in fibrous tissues such as tendons, ligaments, and skin."

    "Fibrillin is a glycoprotein, which is essential for the formation of elastic fibers found in connective tissue."

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