Aspartyl aminopeptidase is an enzyme that in humans is encoded by the DNPEPgene.
The protein encoded by this gene is an aminopeptidase which prefers acidic amino acids, and specifically favors aspartic acid over glutamic acid. It is thought to be a cytosolic protein involved in general metabolism of intracellular proteins.
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Wilk S, Wilk E, Magnusson RP (2002). "Identification of histidine residues important in the catalysis and structure of aspartyl aminopeptidase.". Arch. Biochem. Biophys.407 (2): 176–83. doi:10.1016/S0003-9861(02)00494-0. PMID12413488.