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Communication

Discovery of Small Molecules that Bind to K‐Ras and Inhibit Sos‐Mediated Activation*

Qi Sun

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)

These authors contributed equally to this work.Search for more papers by this author
Dr. Jason P. Burke

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)

These authors contributed equally to this work.Search for more papers by this author
Prof. Jason Phan

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)

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Michael C. Burns

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)

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Prof. Edward T. Olejniczak

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)

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Prof. Alex G. Waterson

Department of Pharmacology, Vanderbilt University School of Medicine, 2200 Pierce Ave., 442 RRB, Nashville, TN 37232 (USA)

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Prof. Taekyu Lee

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)

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Prof. Olivia W. Rossanese

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)

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Prof. Stephen W. Fesik

Corresponding Author

E-mail address:stephen.fesik@vanderbilt.edu

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)

Department of Biochemistry, Vanderbilt University School of Medicine, 2215 Garland Ave., 607 Light Hall, Nashville, TN 37232 (USA)
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First published: 08 May 2012
Cited by: 177
*

This work was supported by the US National Institutes of Health: 5DP1OD006933 (NIH Director’s Pioneer Award) to S.W.F., an ARRA stimulus grant (5RC2A148375) to L. J. Marnett, and a NCI SPORE grant in GI cancer (5P50A095103‐09) to R.J. Coffey. This work was also funded by the Lustgarten Foundation grant awarded to S.W.F. and the American Cancer Society (Postdoctoral Fellowship, PF1110501CDD) to J.P.B. We thank Matt Mulder (Craig Lindsley lab, Vanderbilt University) for providing HRMS data.

Abstract

Looking for fragments: A fragment‐based screen using NMR spectroscopy was applied to discover ligands that bind to the GTPase K‐Ras and modulate the activity of the nucleotide exchange factor Sos. Structural data on how these fragment‐derived hits bind to the guanosine diphosphate–K‐Ras complex (see picture) provides a starting point for the future discovery of drugs that target K‐Ras activation and signaling.

Number of times cited: 177

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