Beta-secretase is a protein family that includes in humans

Beta-secretase 1 Beta-secretase 1, also known as beta-site amyloid precursor protein cleaving enzyme 1, beta-site APP cleaving enzyme 1 (BACE1), membrane-associated aspartic protease 2, memapsin-2, aspartyl protease 2, and ASP2, is an enzyme that in humans is enc ...

and Beta-secretase 2.

References

{{enzyme index Single-pass transmembrane proteins