L-Lysine, L-α-aspartyl-L-tyrosyl-L-lysyl-L-α-aspartyl-L-α-aspartyl-L-α-aspartyl-L-α-aspartyl-; FLAG Peptide; FLAG EPITOPE PEPTIDE; Trypsinogen (human pancreas isoenzyme 2 activation peptide), 1-L-aspartic acid-2-L-tyrosine-3-L-lysine-; FLAG tag Peptide