Description_x000D_ Amino Acid Sequence_x000D_ Leu-Gly-Gly_x000D_ Biochem/physiol Actions_x000D_ Leucylglycylglycine (DL-Leu-Gly-Gly) may be used to study the effects of branched-chain di- and tripeptides on cell envelope-associated proteinases (CEPs) activity. L-Leu-Gly-Gly may be used as a substrate to study the kinetics of tripeptide aminopeptidase (EC 3.4.11.4) and other peptidase(s) such as leucylglycylglycine aminopeptidase (EC 3.4.1.3)._x000D_ Other Notes_x000D_ Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. L9750.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.