5lds

Structural highlights

Function

[AMPN_PIG] Broad specificity aminopeptidase. Plays a role in the final digestion of peptides generated from hydrolysis of proteins by gastric and pancreatic proteases. May be involved in the metabolism of regulatory peptides of diverse cell types, responsible for the processing of peptide hormones, such as angiotensin III and IV, neuropeptides, and chemokines and involved the cleavage of peptides bound to major histocompatibility complex class II molecules of antigen presenting cells. May have a role in angiogenesis (By similarity). It is able to degrade Leu-enkephalin and Met-enkephalin but not cholecystokinin CCK8, neuromedin C (GRP-10), somatostatin-14, substance P and vasoactive intestinal peptide. In case of porcine transmissible gastroenteritis coronavirus (TGEV) and porcine respiratory coronavirus (PRCoV) infections, serves as a receptor for TGEV and PRCoV spike glycoprotein in a species-specific manner.^{[1] [2] [3] [4] [5]}

References

1. ↑ Delmas B, Gelfi J, Kut E, Sjostrom H, Noren O, Laude H. Determinants essential for the transmissible gastroenteritis virus-receptor interaction reside within a domain of aminopeptidase-N that is distinct from the enzymatic site. J Virol. 1994 Aug;68(8):5216-24. PMID:7913510
2. ↑ Delmas B, Gelfi J, L'Haridon R, Vogel LK, Sjostrom H, Noren O, Laude H. Aminopeptidase N is a major receptor for the entero-pathogenic coronavirus TGEV. Nature. 1992 Jun 4;357(6377):417-20. PMID:1350661 doi:http://dx.doi.org/10.1038/357417a0
3. ↑ Delmas B, Gelfi J, Sjostrom H, Noren O, Laude H. Further characterization of aminopeptidase-N as a receptor for coronaviruses. Adv Exp Med Biol. 1993;342:293-8. PMID:7911642
4. ↑ Benbacer L, Kut E, Besnardeau L, Laude H, Delmas B. Interspecies aminopeptidase-N chimeras reveal species-specific receptor recognition by canine coronavirus, feline infectious peritonitis virus, and transmissible gastroenteritis virus. J Virol. 1997 Jan;71(1):734-7. PMID:8985407
5. ↑ Hegyi A, Kolb AF. Characterization of determinants involved in the feline infectious peritonitis virus receptor function of feline aminopeptidase N. J Gen Virol. 1998 Jun;79 ( Pt 6):1387-91. PMID:9634079