Structures of Protein

 Proteins are made up of building blocks called amino acids. There are about 20 different amino acids that link together in different combinations. The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain . Primary structure of protein: By primary structure of protein we mean the linkage of amino acids through polypeptide bonds. Secondary Structure Of Protein: Secondary structure of protein refers to regular, short ranged recurring arrangements in space of adjacent amino acid residues in a polypeptide chain. This structure is stabilized by the hydrogen bonds between the carbonyl oxygen and amide nitrogens. This structure includes the α-helix, β-sheets and β- turns. α-helix: The backbone adopts a cylindrical spiral structure and there are 3.6 AAs residues per helical turn. The α helix is stabilized by hydr...