Which of the following bonds does not partici | vedclass

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(D) The quaternary structure of proteins refers to the arrangement of multiple polypeptide chains (subunits) into a single functional complex. These s

Vedclass · Accepted Answer

Covalent bond

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(D) The quaternary structure of proteins refers to the arrangement of multiple polypeptide chains (subunits) into a single functional complex. These subunits are held together by non-covalent interactions,which include hydrogen bonds,ionic bonds,and hydrophobic interactions. Disulfide bonds (covalent) can also stabilize the structure between subunits. However,a general 'covalent bond' (such as a peptide bond) is responsible for the primary structure (the linear sequence of amino acids) within a single polypeptide chain,not for the association of subunits in the quaternary structure. Therefore,the general term 'covalent bond' is the correct answer as it refers to the primary structure linkage.

Which of the following bonds does not participate in the formation of the quaternary structure of proteins?

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