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Updated: Nov 4, 2025

Collecting Variable-concentration Isothermal Titration Calorimetry Datasets in Order to Determine Binding Mechanisms
Published on: April 7, 2011
Itaconate is a covalent inhibitor of the Mycobacterium tuberculosis isocitrate lyase
Brooke X C Kwai1, Annabelle J Collins1, Martin J Middleditch2,3
1School of Chemical Sciences, The University of Auckland Private Bag 92019, Victoria Street West Auckland 1142 New Zealand j.sperry@auckland.ac.nz i.leung@auckland.ac.nz.
Abstract:
Itaconate is a mammalian antimicrobial metabolite that inhibits the isocitrate lyases (ICLs) of Mycobacterium tuberculosis. Herein, we report that ICLs form a covalent adduct with itaconate through their catalytic cysteine residue. These results reveal atomic details of itaconate inhibition and provide insights into the catalytic mechanism of ICLs.
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