Molecular recognition between pancreatic lipase and natural and synthetic inhibitors.

Abstract:

:Pancreatic lipase (PL) is a primary lipase critical for triacylglyceride digestion in humans and is considered as a promising target for the treatment of obesity. Although the current synthetic drugs available for treating obesity have been demonstrated to be effective in inhibiting PL, their prolonged usage results in severe side effects. Based on this argument, in this study, we evaluated the structural and energetic features linked to molecular recognition between two well-known PL inhibitors, orlistat (ORL, synthetic inhibitor) and (-)-epigallocatechin gallate (EGCG, natural inhibitor) and PL through molecular dynamics simulations and free energy calculations of ORL and EGCG at the PL binding site when it is isolated (PL) from the heterodimer complex, forming the heterodimer complex with colipase (PLCL) and lacking structural calcium. Our study showed that the binding free energy of ORL and EGCG to the target correlates with their experimental affinity tendency. The presence of the heterodimer PLCL state, the presence of structural calcium and the type of inhibitor resulted in differences in structural stability and in the map of protein-ligand and protein-protein interactions. Overall, our results suggest that the heterodimer complex and structural calcium are linked to the binding properties of PL.

journal_name

Int J Biol Macromol

authors

Bello M,Basilio-Antonio L,Fragoso-Vázquez J,Avalos-Soriano A,Correa-Basurto J

doi

10.1016/j.ijbiomac.2017.01.150

subject

Has Abstract

pub_date

2017-05-01 00:00:00

pages

855-868

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(17)30036-3

journal_volume

98

pub_type

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