Fmoc-Ala-Glu-Asn-Lys-NH2 is a selective asparagine endopeptidase (AEP) inhibitor peptide and suppresses amyloid precursor protein (APP) cleavage. AEP, a pH-controlled cysteine proteinase, is activated during ageing and mediates APP proteolytic processing[1].
Fmoc-Ala-Glu-Asn-Lys-NH2 antagonizes APP processing by AEP, whereas other small molecular inhibitors and inactive peptide AEQK were without effect[1].
[1]. Zhang Z, et al. Delta-secretase cleaves amyloid precursor protein and regulates the pathogenesis in Alzheimer's disease. Nat Commun. 2015;6:8762. Published 2015 Nov 9.