The Enzyme Database

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Accepted name: aspergillopepsin II
Reaction: Preferential cleavage in B chain of insulin: Asn3┼Gln, Gly13┼Ala, Tyr26┼Thr
Other name(s): proteinase A; proctase A; Aspergillus niger var. macrosporus aspartic proteinase
Comments: Isolated from Aspergillus niger var. macrosporus, distinct from proteinase B (see aspergillopepsin I) in specificity and insensitivity to pepstatin. In peptidase family G1 (scytalidopepsin B family). Formerly included in EC
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, MEROPS, PDB, CAS registry number: 9025-49-4
1.  Chang, W.-J., Horiuchi, S., Takahashi, K., Yamasaki, M. and Yamada, Y. The structure and function of acid proteases. VI. Effects of acid protease-specific inhibitors on the acid proteases from Aspergillus niger var. macrosporus. J. Biochem. (Tokyo) 80 (1976) 975–981. [PMID: 12156]
2.  Iio, K. and Yamasaki, M. Specificity of acid proteinase A from Aspergillus niger var. macrosporus towards B-chain of performic acid oxidized bovine insulin. Biochim. Biophys. Acta 429 (1976) 912–924. [DOI] [PMID: 1268233]
[EC created 1992 (EC created 1992 (EC created 1961 as EC, transferred 1972 to EC, modified 1981 [EC, EC, EC, EC, EC, EC and EC all created 1972 and incorporated 1978], part incorporated 1992)]

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