IUBMB Enzyme Nomenclature


Accepted name: memapsin 1

Reaction: Broad endopeptidase specificity. Cleaves Glu-Val-Asn-LeuAsp-Ala-Glu-Phe in the Swedish variant of Alzheimer's amyloid precursor protein

Other name(s): β-secretase; β-site Alzheimer's amyloid precursor protein cleaving enzyme 2 (BACE2); ASP1; Down region aspartic protease

Comments: Can cleave β-amyloid precursor protein to form the amyloidogenic β-peptide that is implicated in the pathology of Alzheimer's disease, but is not significantly expressed in human brain. In peptidase family A1, but is atypical in containing a C-terminal membrane-spanning domain.

Links to other databases: BRENDA, EXPASY, KEGG, MEROPS, Metacyc, PDB, CAS registry number: 447457-31-0


1. Turner, R.T., Loy, J.A., Nguyen, C., Devasamudram, T., Ghosh, A.K., Koelsch, G. and Tang, J. Specificity of memapsin 1 and its implications on the design of memapsin 2 (β-secretase) inhibitor selectivity. Biochemistry 41 (2002) 8742-8746. [PMID: 12093293]

[EC created 2003]

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