amino acids supplier Europe Acid Sequencing - A partial sequencing (8- 15 residues) of amino acids inside a protein or polypeptide by both amino- terminal or carboxy-terminal sequencing. This methodology is finished to acquire information about the first construction of the protein, its homogeneity, and the presence or absence of polypeptide cleavages. FDA should be able to verify the accuracy and the appropriateness of the data contained within the EA.