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BREAKDOWN OF SOME NEURONAL PEPTIDES WITH DIPEPTIDYL PEPTIDASE IV

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CC BY-NC 4.0 This work is licensed under Creative Commons Attribution–NonCommercial International License (CC BY-NC 4.0).

Abstract

It is shown that the amyloid beta peptides Aβ(1-16) and Aβ(1-40) and a cytokine from neurosecretory granules of bovine neurohypophysis, Proline Rich Peptide PRP-4, are truncated at the presence of multifunctional dipeptidyl peptidase IV (CD26/DPPIV), widely expressed in different mammalian tissues. It means that these neuropeptides represent substrates of the enzyme. Besides, it appeared that at the presence of CD26/DPPIV the process of Aβ(1-40) aggregation in vitro was hindered.

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