Structural Basis and Selectivity of Tankyrase Inhibition by a Wnt Signaling Inhibitor WIKI4

Teemu Haikarainen; Harikanth Venkannagari; Mohit Narwal; Ezeogo Obaji; Hao Wei Lee; Yves Nkizinkiko; Lari Lehtiö

doi:10.1371/journal.pone.0065404

Structural Basis and Selectivity of Tankyrase Inhibition by a Wnt Signaling Inhibitor WIKI4

Teemu Haikarainen, Harikanth Venkannagari, Mohit Narwal, Ezeogo Obaji, Hao Wei Lee, Yves Nkizinkiko, Lari Lehtiö

Pharmacology & Toxicology

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Recently a novel inhibitor of Wnt signaling was discovered. The compound, WIKI4, was found to act through tankyrase inhibition and regulate β-catenin levels in many cancer cell lines and human embryonic stem cells. Here we confirm that WIKI4 is a high potency tankyrase inhibitor and that it selectively inhibits tankyrases over other ARTD enzymes tested. The binding mode of the compound to tankyrase 2 was determined by protein X-ray crystallography to 2.4 Å resolution. The structure revealed a novel binding mode to the adenosine subsite of the donor NAD⁺ binding groove of the catalytic domain. Our results form a structural basis for further development of potent and selective tankyrase inhibitors based on the WIKI4 scaffold.

Original language	English (US)
Article number	e65404
Journal	PloS one
Volume	8
Issue number	6
DOIs	https://doi.org/10.1371/journal.pone.0065404
State	Published - Jun 6 2013

ASJC Scopus subject areas

Biochemistry, Genetics and Molecular Biology(all)
Agricultural and Biological Sciences(all)
General

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AU - Haikarainen, Teemu

AU - Venkannagari, Harikanth

AU - Narwal, Mohit

AU - Obaji, Ezeogo

AU - Lee, Hao Wei

AU - Nkizinkiko, Yves

AU - Lehtiö, Lari

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Structural Basis and Selectivity of Tankyrase Inhibition by a Wnt Signaling Inhibitor WIKI4

Abstract

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