Download MendeleyA Potent, Selective and Cell-Active Allosteric Inhibitor of Protein Arginine Methyltransferase 3 (PRMT3).
Kaniskan, H.U., Szewczyk, M.M., Yu, Z., Eram, M.S., Yang, X., Schmidt, K., Luo, X., Dai, M., He, F., Zang, I., Lin, Y., Kennedy, S., Li, F., Dobrovetsky, E., Dong, A., Smil, D., Min, S.J., Landon, M., Lin-Jones, J., Huang, X.P., Roth, B.L., Schapira, M., Atadja, P., Barsyte-Lovejoy, D., Arrowsmith, C.H., Brown, P.J., Zhao, K., Jin, J., Vedadi, M.(2015) Angew Chem Int Ed Engl 54: 5166-5170
- PubMed: 25728001
- DOI: https://doi.org/10.1002/anie.201412154
- Primary Citation of Related Structures:
4RYL - PubMed Abstract:
PRMT3 catalyzes the asymmetric dimethylation of arginine residues of various proteins. It is essential for maturation of ribosomes, may have a role in lipogenesis, and is implicated in several diseases. A potent, selective, and cell-active PRMT3 inhibitor would be a valuable tool for further investigating PRMT3 biology. Here we report the discovery of the first PRMT3 chemical probe, SGC707, by structure-based optimization of the allosteric PRMT3 inhibitors we reported previously, and thorough characterization of this probe in biochemical, biophysical, and cellular assays. SGC707 is a potent PRMT3 inhibitor (IC50 =31±2 nM, KD =53±2 nM) with outstanding selectivity (selective against 31 other methyltransferases and more than 250 non-epigenetic targets). The mechanism of action studies and crystal structure of the PRMT3-SGC707 complex confirm the allosteric inhibition mode. Importantly, SGC707 engages PRMT3 and potently inhibits its methyltransferase activity in cells. It is also bioavailable and suitable for animal studies. This well-characterized chemical probe is an excellent tool to further study the role of PRMT3 in health and disease.
Organizational Affiliation:
Departments of Structural and Chemical Biology, Oncological Sciences, and Pharmacology and System Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY 10029 (USA).
