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A Non-Competitive Inhibitor of VCP/p97 and VPS4 Reveals Conserved Allosteric Circuits in Type I and II AAA ATPases

A Non-Competitive Inhibitor of VCP/p97 and VPS4 Reveals Conserved Allosteric Circuits in Type I and II AAA ATPases

Robert Pöhler, Jan H Krahn, Johannes van den Boom, Grzegorz Dobrynin, Farnusch Kaschani, Hans-Michael Eggenweiler, Frank T Zenke, Markus Kaiser, Hemmo Meyer

Angew Chem Int Ed Engl. 2018 Feb 5;57(6):1576-1580.

PMID: 29271116

Abstract:

AAA ATPases have pivotal functions in diverse cellular processes essential for survival and proliferation. Revealing strategies for chemical inhibition of this class of enzymes is therefore of great interest for the development of novel chemotherapies or chemical tools. Here, we characterize the compound MSC1094308 as a reversible, allosteric inhibitor of the type II AAA ATPase human ubiquitin-directed unfoldase (VCP)/p97 and the type I AAA ATPase VPS4B. Subsequent proteomic, genetic and biochemical studies indicate that MSC1094308 binds to a previously characterized drugable hotspot of p97, thereby inhibiting the D2 ATPase activity. Our results furthermore indicate that a similar allosteric site exists in VPS4B, suggesting conserved allosteric circuits and drugable sites in both type I and II AAA ATPases. Our results may thus guide future chemical tool and drug discovery efforts for the biomedically relevant AAA ATPases.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP2219320086	MSC1094308		2219320-08-6	Price

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