A number of ELISA Kits are available that target X-PS-alpha, an alias of the protein, presenilin 1. The human protein, encoded by the gene PSEN1, is an enzyme and member of the Peptidase A22A family. The protein's cellular localization is indicated to be membrane-associated. Additional synonyms or past names for this protein may include: ACNINV3, AD3, FAD, PS-1, PS1, S182. Homology is conserved in other species, such as Mouse, Rat, Zebrafish, Frog, Chicken.