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Biological evaluation and interaction mechanism of

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2020-08-24 10:57:16; 來源:
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Inhibition of beta-site APP cleaving enzyme1 (BACE1) is one of the most promising therapeutic approaches for Alzheimer’s disease. To find natural products for the treatment of Alzheimer’s disease, absorption, distribution, metabolism, excretion and toxicity (ADMET) properties and in vitro BACE1 inhibitory activity of the peptides isolated from egg albumin were evaluated. Then, molecular docking and molecular dynamics simulation were used to explain the molecular mechanism of the interactions between BACE1 and peptides. The IC50 value of peptide KLPGF, with satisfactory ADMET properties, against BACE1 was (8.30 ± 0.56) mmol/L. Molecular docking revealed that KLPGF contacted with the residues of BACE1’s active sites through twelve hydrogen bonds interactions, two hydrophobic interactions, one electrostatic interaction, and two Pi-cation interactions. The 5 ns molecular dynamics simulations confirmed that the structure of KLPGF with BACE1 was stable. Peptide KLPGF contacted the residues Lys321, Asp228, and Asn233 with stable hydrogen bonds. KLPGF may be a potential anti-BACE1 candidate.


Biological evaluation and interaction mechanism of beta-site APP cleaving enzyme 1 inhibitory pentapeptide from egg albumin

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