EC - Aminopeptidase B

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IntEnz Enzyme Nomenclature


Accepted name:
aminopeptidase B
Other names:
L-arginine aminopeptidase
Cl--activated arginine aminopeptidase
arginine aminopeptidase
arginyl aminopeptidase
arylamidase II
cytosol aminopeptidase IV
Systematic name:




Cytosolic or membrane-associated enzyme from mammalian tissues, activated by chloride ions and low concentrations of thiol compounds. This is one of the activities of the bifunctional enzyme EC (membrane alanyl aminopeptidase family) [4,5].

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , MEROPS , UniPathway
Protein domains and families: PROSITE:PDOC00129
Structural data: CSA , EC2PDB
Gene Ontology: GO:0030601
CAS Registry Number: 9073-92-1


  1. Gainer, H., Russell, J.T. and Loh, Y.P.
    An aminopeptidase activity in bovine pituitary secretory vesicles that cleaves the N-terminal arginine from beta-lipotropin(60-65).
    FEBS Lett. 175 : 135-139 (1984). [PMID: 6434344]
  2. Belhacène, N., Mari, B., Rossi, B. and Auberger, P.
    Characterization and purification of T lymphocyte aminopeptidase B: a putative marker of T cell activation.
    Eur. J. Immunol. 23 : 1948-1955 (1993). [PMID: 8344358]
  3. Cadel, S., Pierotti, A.R., Foulon, T., Créminon, C., Barré, N., Segrétain, D. and Cohen, P.
    Aminopeptidase-B in the rat testes: Isolation, functional properties and cellular localization in the seminiferous tubules.
    Mol. Cell. Endocrinol. 110 : 149-160 (1995). [PMID: 7672445]
  4. Fukasawa, K.M., Fukasawa, K., Kanai, M., Fujii, S. and Harada, M.
    Molecular cloning and expression of rat liver aminopeptidase B.
    J. Biol. Chem. 271 : 30731-30735 (1996). [PMID: 8940051]
  5. Cadel, S., Foulon, T., Viron, A., Balogh, A., Midol-Monnet, S., Noel, N. and Cohen, P.
    Aminopeptidase B from the rat testis is a bifunctional enzyme structually related to leukotriene-A4 hydrolase.
    Proc. Natl. Acad. Sci. USA 94 : 2963-2968 (1997). [PMID: 5798121]
  6. Orning, L., Gierse, J.K. and Fitzpatrick, F.A.
    The bifunctional enzyme leukotriene-A4 hydrolase is an arginine aminopeptidase of high efficiency and specificity.
    J. Biol. Chem. 269 : 11269-11273 (1994). [PMID: 8157657]

[EC created 1972, modified 1997]