Amino Acid Sequencing - A partial sequencing (8- 15 residues) of amino acids suppliers acids within a protein or polypeptide by both amino- terminal or carboxy-terminal sequencing. This technique is completed to acquire details about the primary construction of the protein, its homogeneity, and the presence or absence of polypeptide cleavages. FDA should have the ability to verify the accuracy and the appropriateness of the information contained within the EA.