Endoplasmic reticulum aminopeptidase 2

Definition:

Aminopeptidase that plays a central role in peptide trimming, a step required for the generation of most HLA class I-binding peptides. Peptide trimming is essential to customize longer precursor peptides to fit them to the correct length required for presentation on MHC class I molecules. Preferentially hydrolyzes the basic residues Arg and Lys.

References:

[1]. Loredana Saveanu, et al. Concerted peptide trimming by human ERAP1 and ERAP2 aminopeptidase complexes in the endoplasmic reticulum. Nat Immunol. 2005 Jul;6(7):689-97. [Content Brief]

[2]. Toshihiro Tanioka, et al. Human leukocyte-derived arginine aminopeptidase. The third member of the oxytocinase subfamily of aminopeptidases. J Biol Chem. 2003 Aug 22;278(34):32275-83. [Content Brief]

[3]. Shih-Chung Chang, et al. The ER aminopeptidase, ERAP1, trims precursors to lengths of MHC class I peptides by a "molecular ruler" mechanism. Proc Natl Acad Sci U S A. 2005 Nov 22;102(47):17107-12. [Content Brief]

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