Mechanism of action of compound-13 : An a1-selective small molecule activator of AMPK
Journal article
Hunter, Roger, Foretz, Marc, Bultot, Laurent, Fullerton, Morgan, Deak, Maria, Ross, Fiona, Hawley, Simon, Shpiro, Natalia, Viollet, Benoit, Barron, Denis, Kemp, Bruce, Steinberg, Gregory, Hardie, David Grahame and Sakamoto, Kei. (2014). Mechanism of action of compound-13 : An a1-selective small molecule activator of AMPK. Chemistry and Biology. 21(7), pp. 866 - 879. https://doi.org/10.1016/j.chembiol.2014.05.014
Authors | Hunter, Roger, Foretz, Marc, Bultot, Laurent, Fullerton, Morgan, Deak, Maria, Ross, Fiona, Hawley, Simon, Shpiro, Natalia, Viollet, Benoit, Barron, Denis, Kemp, Bruce, Steinberg, Gregory, Hardie, David Grahame and Sakamoto, Kei |
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Abstract | AMPK is a sensor of cellular energy status and a promising target for drugs aimed at metabolic disorders. We have studied the selectivity and mechanism of a recently described activator, C2, and its cell-permeable prodrug, C13. C2 was a potent allosteric activator of α1-complexes that, like AMP, also protected against Thr172 dephosphorylation. Compared with AMP, C2 caused only partial allosteric activation of α2-complexes and failed to protect them against dephosphorylation. We show that both effects could be fully restored by exchanging part of the linker between the autoinhibitory and C-terminal domains in α2, containing the equivalent region from α1 thought to interact with AMP bound in site 3 of the γ subunit. Consistent with our results in cell-free assays, C13 potently inhibited lipid synthesis in hepatocytes from wild-type and was largely ineffective in AMPK-knockout hepatocytes; its effects were more severely affected by knockout of α1 than of α2, β1, or β2. |
Year | 2014 |
Journal | Chemistry and Biology |
Journal citation | 21 (7), pp. 866 - 879 |
ISSN | 1074-5521 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.chembiol.2014.05.014 |
Page range | 866 - 879 |
Publisher's version | File Access Level Controlled |
https://acuresearchbank.acu.edu.au/item/85y72/mechanism-of-action-of-compound-13-an-a1-selective-small-molecule-activator-of-ampk
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