Aminopeptidase N | M1: Aminopeptidase N | IUPHAR/BPS Guide to PHARMACOLOGY

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Aminopeptidase N

target has curated data in GtoImmuPdb

Target id: 1560

Nomenclature: Aminopeptidase N

Family: M1: Aminopeptidase N

Annotation status:  image of a grey circle Awaiting annotation/under development. Please contact us if you can help with annotation.  » Email us

Gene and Protein Information
Species TM AA Chromosomal Location Gene Symbol Gene Name Reference
Human - 967 15q25-q26 ANPEP alanyl aminopeptidase, membrane
Mouse - 966 7 D3 Anpep alanyl (membrane) aminopeptidase
Rat - 965 1q31 Anpep alanyl aminopeptidase, membrane
Previous and Unofficial Names
Alanyl aminopeptidase | gp150 | microsomal aminopeptidase | myeloid plasma membrane glycoprotein CD13 | LAP1 | aminopeptidase M | aminopeptidase N | AP-M | APN | cluster of differentiation antigen 13 (CD13) | kidney aminopeptidase M | kidney Zn peptidase | KZP | leucine arylaminopeptidase 1 | membrane alanine aminopeptidase | alanyl (membrane) aminopeptidase | alanyl aminopeptidase, membrane | alanyl aminopeptidase
Database Links
Specialist databases
MEROPS M01.001 (Hs)
Other databases
ChEMBL Target
Ensembl Gene
Entrez Gene
Human Protein Atlas
KEGG Enzyme
RefSeq Nucleotide
RefSeq Protein
Enzyme Reaction
EC Number:

Download all structure-activity data for this target as a CSV file

Key to terms and symbols View all chemical structures Click column headers to sort
Ligand Sp. Action Value Parameter Reference
compound I3 [PMID: 23428964] Mm Inhibition 9.7 pKi 6
pKi 9.7 (Ki 2x10-10 M) [6]
compound I3 [PMID: 23428964] Hs Inhibition 9.5 pKi 6
pKi 9.5 (Ki 3.5x10-10 M) [6]
compound 1a [PMID: 25692029] Hs Inhibition 8.5 pKi 2-3
pKi 8.5 (Ki 2.9x10-9 M) [2-3]
BTB07018 Hs Inhibition 6.0 pKi 5
pKi 6.0 (Ki 1.01x10-6 M) [5]
Description: Inhibition of APN in vitro.
BTB07018 Pig Inhibition 5.7 pKi 5
pKi 5.7 (Ki 1.95x10-6 M) [5]
JFD00064 Hs Inhibition 5.7 pKi 5
pKi 5.7 (Ki 2.01x10-6 M) [5]
Description: Inhibition of APN in vitro.
JFD00064 Pig Inhibition 5.5 pKi 5
pKi 5.5 (Ki 2.9x10-6 M) [5]
View species-specific inhibitor tables
Immunopharmacology Comments
Pharmacological inhibitors of APN are being investigated to counter the dysregulated APN expression that has been associated with inflammatory diseases [1,4].
Immuno Process Associations
Immuno Process:  Inflammation
GO Annotations:  Associated to 1 GO processes
GO:0043312 neutrophil degranulation TAS
Immuno Process:  Cellular signalling
GO Annotations:  Associated to 1 GO processes
GO:0043312 neutrophil degranulation TAS
Immuno Process:  Barrier integrity
GO Annotations:  Associated to 1 GO processes, IEA only
click arrow to show/hide IEA associations
GO:0001618 virus receptor activity IEA
General Comments
APN (ANPEP) is a neutral metallo-aminopeptidase that catalyses the removal of neutral and basic amino acids from the N-terminus of protein or peptide substrates. Since dysregulated APN expression has been associated with inflammatory diseases and some types of cancer, pharmacological inhibition of APN may offer effective therapy for these indications.


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1. Bauvois B, Dauzonne D. (2006) Aminopeptidase-N/CD13 (EC inhibitors: chemistry, biological evaluations, and therapeutic prospects. Med Res Rev, 26 (1): 88-130. [PMID:16216010]

2. Bonnard E, Poras H, Nadal X, Maldonado R, Fournié-Zaluski MC, Roques BP. (2015) Long-lasting oral analgesic effects of N-protected aminophosphinic dual ENKephalinase inhibitors (DENKIs) in peripherally controlled pain. Pharmacol Res Perspect, 3 (2): e00116. [PMID:25692029]

3. Chen H, Noble F, Roques BP, Fournié-Zaluski MC. (2001) Long lasting antinociceptive properties of enkephalin degrading enzyme (NEP and APN) inhibitor prodrugs. J. Med. Chem., 44 (21): 3523-30. [PMID:11585456]

4. Luan Y, Xu W. (2007) The structure and main functions of aminopeptidase N. Curr. Med. Chem., 14 (6): 639-47. [PMID:17346152]

5. Pascual I, Valiente PA, García G, Valdés-Tresanco ME, Arrebola Y, Díaz L, Bounaadja L, Uribe RM, Pacheco MC, Florent I et al.. (2017) Discovery of novel non-competitive inhibitors of mammalian neutral M1 aminopeptidase (APN). Biochimie, 142: 216-225. [PMID:28964831]

6. Schmitt C, Voegelin M, Marin A, Schmitt M, Schegg F, Hénon P, Guenot D, Tarnus C. (2013) Selective aminopeptidase-N (CD13) inhibitors with relevance to cancer chemotherapy. Bioorg. Med. Chem., 21 (7): 2135-44. [PMID:23428964]

How to cite this page

M1: Aminopeptidase N: Aminopeptidase N. Last modified on 29/01/2020. Accessed on 11/08/2020. IUPHAR/BPS Guide to PHARMACOLOGY,