Volume 53, Issue 25 pp. 6443-6448
Communication

A Natural-Product Switch for a Dynamic Protein Interface

Marcel Scheepstra

Marcel Scheepstra

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Search for more papers by this author
Dr. Lidia Nieto

Dr. Lidia Nieto

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Search for more papers by this author
Dr. Anna K. H. Hirsch

Dr. Anna K. H. Hirsch

Stratingh Institue for Chemistry, University of Groningen, Nijenborgh 7, 9747AG Groningen (The Netherlands)

Search for more papers by this author
Dr. Sascha Fuchs

Dr. Sascha Fuchs

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Search for more papers by this author
Dr. Seppe Leysen

Dr. Seppe Leysen

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Search for more papers by this author
Chan Vinh Lam

Chan Vinh Lam

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Search for more papers by this author
Leslie in het Panhuis

Leslie in het Panhuis

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Search for more papers by this author
Prof. Dr. Constant A. A. van Boeckel

Prof. Dr. Constant A. A. van Boeckel

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Search for more papers by this author
Dr. Hans Wienk

Dr. Hans Wienk

Bijvoet Center for Biomolecular Research, NMR Spectroscopy, Utrecht University, Padualaan 8, 3584CH Utrecht (The Netherlands)

Search for more papers by this author
Prof. Dr. Rolf Boelens

Prof. Dr. Rolf Boelens

Bijvoet Center for Biomolecular Research, NMR Spectroscopy, Utrecht University, Padualaan 8, 3584CH Utrecht (The Netherlands)

Search for more papers by this author
Dr. Christian Ottmann

Dr. Christian Ottmann

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Search for more papers by this author
Dr. Lech-Gustav Milroy

Corresponding Author

Dr. Lech-Gustav Milroy

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cbSearch for more papers by this author
Prof. Dr. Luc Brunsveld

Corresponding Author

Prof. Dr. Luc Brunsveld

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb

Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cbSearch for more papers by this author
First published: 12 May 2014
Citations: 34

We thank Nicky Hoek, Dr. Eric Kalkhoven and Dr. Arjen Koppen (UMC, Utrecht, The Netherlands) for their scientific support. Funding was granted by the Netherlands Organisation for Scientific Research via Gravity program 024.001.035, ECHO grant 711011017, VENI grant to A.K.H.H., and a Marie Curie Action (PIEF-GA-2011-298489 to LN).

Graphical Abstract

Rational splitting of the dual-binding properties of a natural product delivers two mechanistically different ligands, which selectively target opposite sides of a dynamic protein interface (see picture; AF2=activation function 2). This work highlights the value of screening natural products against transient protein complexes.

Abstract

Small ligands are a powerful way to control the function of protein complexes via dynamic binding interfaces. The classic example is found in gene transcription where small ligands regulate nuclear receptor binding to coactivator proteins via the dynamic activation function 2 (AF2) interface. Current ligands target the ligand-binding pocket side of the AF2. Few ligands are known, which selectively target the coactivator side of the AF2, or which can be selectively switched from one side of the interface to the other. We use NMR spectroscopy and modeling to identify a natural product, which targets the retinoid X receptor (RXR) at both sides of the AF2. We then use chemical synthesis, cellular screening and X-ray co-crystallography to split this dual activity, leading to a potent and molecularly efficient RXR agonist, and a first-of-kind inhibitor selective for the RXR/coactivator interaction. Our findings justify future exploration of natural products at dynamic protein interfaces.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.