At which level of organization does a protein | vedclass

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(C) Proteins are complex molecules that fold into specific three-dimensional shapes to perform biological functions. While the primary structure refer

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Tertiary

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(C) Proteins are complex molecules that fold into specific three-dimensional shapes to perform biological functions. While the primary structure refers to the linear sequence of amino acids,and secondary structure refers to local folding (like $\alpha$-helices or $\beta$-pleated sheets),these are generally not functional. $A$ protein consisting of a single polypeptide chain must fold into its specific three-dimensional shape,known as the tertiary structure,to become biologically active or functional. The quaternary structure is only relevant for proteins that consist of two or more polypeptide chains (subunits). Therefore,for a single polypeptide protein,the tertiary structure is the level at which it becomes functional.

At which level of organization does a protein consisting of only a single polypeptide become functional?

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