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Conformational Changes in Alkyl Chains Determine the Thermodynamic and Kinetic Binding Profiles of Carbonic Anhydrase Inhibitors.

Abstract：

:Thermodynamics and kinetics of protein-ligand binding are both important aspects for the design of novel drug molecules. Presently, thermodynamic data are collected with isothermal titration calorimetry, while kinetic data are mostly derived from surface plasmon resonance. The new method of kinITC provides both thermodynamic and kinetic data from calorimetric titration measurements. The present study demonstrates the convenient collection of calorimetric data suitable for both thermodynamic and kinetic analysis for two series of congeneric ligands of human carbonic anhydrase II and correlates these findings with structural data obtained by macromolecular crystallography to shed light on the importance of shape complementarity for thermodynamics and kinetics governing a protein-ligand binding event. The study shows how minute chemical alterations change preferred ligand conformation and can be used to manipulate thermodynamic and kinetic signatures of binding. They give rise to the observation that analogous n-alkyl and n-alkyloxy derivatives of identical chain length swap their binding kinetic properties at unchanged binding affinity.

journal_name

ACS Chem Biol

journal_title

ACS chemical biology

authors

Glöckner S,Ngo K,Sager CP,Hüfner-Wulsdorf T,Heine A,Klebe G

doi

10.1021/acschembio.9b00895

subject

Has Abstract

pub_date

2020-03-20 00:00:00

pages

675-685

issue

3

eissn

1554-8929

issn

1554-8937

journal_volume

15

pub_type

杂志文章

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