Probing the KRas Switch II Groove by Fluorine NMR Spectroscopy.

Probing the KRas Switch II Groove by Fluorine NMR Spectroscopy.
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DOI:
10.1021/acschembio.2c00566
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发表时间:
2022-10-21
影响因子:
4
通讯作者:
Kelly, Mark J. S.
Kelly, Mark J. S.
中科院分区:
生物学2区
文献类型:
--
作者:
Shokat, Kevan M.;Peacock, D. Matthew;Kelly, Mark J. S.

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While there has been recent success in the development of KRasG12C inhibitors, unmet needs for selective inhibitors of KRasG12D and the remaining oncogenic KRas proteins remain. Here, we applied trifluoromethyl-containing ligands of KRas proteins as competitive probe ligands to assay the occupancy of the switch II pocket by 19F NMR spectroscopy. Structure–activity-relationship studies of probe ligands increased the sensitivity of the assay and identified structures that differentially detected each nucleotide state of KRasG12D. These differences in selectivity, combined with the high resolution of 19F NMR spectroscopy, enabled this method to be expanded to assay both nucleotide states of the protein simultaneously.
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