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  • Title: Enkephalin is liberated from metorphamide and dynorphin A1-8 by endo-oligopeptidase A, but not by metalloendopeptidase EC 3.4.24.15.
    Author: Toffoletto O, Metters KM, Oliveira EB, Camargo AC, Rossier J.
    Journal: Biochem J; 1988 May 15; 252(1):35-8. PubMed ID: 2901829.
    Abstract:
    It has been previously reported that both the cysteinyl-endo-oligopeptidase A and the metalloendopeptidase EC 3.4.24.15 are able to generate enkephalin from a number of enkephalin-containing peptides, including dynorphin A1-8. The present study shows that only endo-oligopeptidase A is able to generate [Leu5]enkephalin and [Met5]enkephalin from dynorphin A1-8 and from metorphamide respectively. It is also shown that endo-oligopeptidase A neither hydrolyses the specific EC 3.4.24.15 substrate alpha-N-benzoyl-Gly-Ala-Ala-Phe p-aminobenzoate, nor is inhibited by the specific EC 3.4.24.15 inhibitor N-[1(RS)-carboxy-2-phenylethyl]-alpha-Ala-Ala-Phe p-aminobenzoate.
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