The NAALADL1 protein is an aminopeptidase that efficiently hydrolyzes a variety of substrates, except those with specific amino acid positions. It has lower activity against substrates containing Asp or Glu at the P2' position or Pro at the P3' position. NAALADL1 Protein, Mouse (HEK293, His) is the recombinant mouse-derived NAALADL1 protein, expressed by HEK293 , with N-His labeled tag.