ERAP2 protein, a key aminopeptidase, plays a pivotal role in peptide trimming, crucial for generating peptides binding to HLA class I molecules. By selectively hydrolyzing basic residues like Arginine (Arg) and Lysine (Lys), ERAP2 precisely customizes longer precursor peptides, ensuring optimal length for effective presentation on MHC class I molecules. ERAP2 Protein, Human (HEK293, His) is the recombinant human-derived ERAP2 protein, expressed by HEK293 , with N-10*His labeled tag.