Proteins have primary structure. If you are given a method to know which amino acid is at either of the two termini (ends) of a protein, can you connect this information to purity or homogeneity of a protein?

Explanation

In primary structure of a protein , amino acids show linear arrangement . To sequence an entire polypeptide chain , a chemical method , called Edman degradation , was devised by Pehr Edman . This procedure labels and removes only the amino- terminal residue from a polypeptide , leaving all other peptide bonds intact . So the amino acids are labelled removed and identified one by one . By this method , we can connect the information to determine the homogeneity of a problem.