jm7b00933_si_009.cif (5.91 MB)
Small Molecule Antagonists of the Interaction between the Histone Deacetylase 6 Zinc-Finger Domain and Ubiquitin
datasetposted on 11.10.2017, 00:00 by Rachel J. Harding, Renato Ferreira de Freitas, Patrick Collins, Ivan Franzoni, Mani Ravichandran, Hui Ouyang, Kevin A. Juarez-Ornelas, Mark Lautens, Matthieu Schapira, Frank von Delft, Vjayaratnam Santhakumar, Cheryl H. Arrowsmith
Inhibitors of HDAC6 have attractive potential in numerous cancers. HDAC6 inhibitors to date target the catalytic domains, but targeting the unique zinc-finger ubiquitin-binding domain (Zf-UBD) of HDAC6 may be an attractive alternative strategy. We developed X-ray crystallography and biophysical assays to identify and characterize small molecules capable of binding to the Zf-UBD and competing with ubiquitin binding. Our results revealed two adjacent ligand-able pockets of HDAC6 Zf-UBD and the first functional ligands for this domain.