On analysis of a protein chain, it was found that it is made up of just a peptide bond. The possible structure of the protein is its

Step-by-step solution

Proteins contain amino acids joined by peptide bonds. This protein structure can be primary, secondary, tertiary or quaternary. The primary structure is the simplest structure in which position of amino acids can be checked. Thus these structures contain only peptide bonds. The secondary structure is coiling of primary structure i.e. polypeptide chain. These can be alpha helix or beta pleated sheets that show presence of hydrogen bonding apart from the peptide bond. Tertiary structures are woollen ball appearance o