Question

Using diagrams where appropriate explain the difference between primary, secondary, supersecondary, tertiary and quaternary protein structure.

Answer 1

Proteins have four levels of structure: primary, secondary, tertiary, and quaternary.

Step-by-step explanation:

Proteins have four levels of structure: primary, secondary, tertiary, and quaternary structure.

The primary structure refers to the sequence of amino acids in a protein. It is determined by the order of amino acids joined together by peptide bonds.

The secondary structure refers to the local folding of the polypeptide chain, such as the formation of alpha helices or beta sheets, which are stabilized by hydrogen bonds.

The tertiary structure is the overall 3D shape of a single polypeptide chain, resulting from interactions between amino acid side chains, hydrogen bonds, disulfide bridges, and other non-covalent forces.

The quaternary structure describes the arrangements of multiple polypeptide chains in a protein complex.

These chains can be held together by non-covalent interactions or disulfide bridges.