Download MendeleyStructural Basis for Potent Inhibition of SIRT2 Deacetylase by a Macrocyclic Peptide Inducing Dynamic Structural Change
Yamagata, K., Goto, Y., Nishimasu, H., Morimoto, J., Ishitani, R., Dohmae, N., Takeda, N., Nagai, R., Komuro, I., Suga, H., Nureki, O.(2013) Structure 22: 345-352
- PubMed: 24389023
- DOI: https://doi.org/10.1016/j.str.2013.12.001
- Primary Citation of Related Structures:
4L3O - PubMed Abstract:
SIRT2 deacetylates specific acetyllysine residues in diverse proteins and is implicated in a variety of cellular processes. SIRT2 inhibition thus has potentials to treat human diseases such as cancers and neurodegenerative disorders. We have recently developed a series of ε-trifluoroacetyllysine-containing macrocyclic peptides, which inhibit the SIRT2 activity more potently than most other known inhibitors. Here, we report the crystal structure of human SIRT2 in complex with a macrocyclic peptide inhibitor, S2iL5, at 2.5 Å resolution. The structure revealed that S2iL5 binds to the active site of SIRT2 through extensive interactions. A structural comparison of the SIRT2-S2iL5 complex with SIRT2 in the free form, and in complex with ADP-ribose, revealed that S2iL5 induces an open-to-closed domain movement and an unexpected helix-to-coil transition in a SIRT2-specific region. Our findings unveil the potential of macrocyclic peptides to bind target proteins by inducing dynamic structural changes.
Organizational Affiliation:
Department of Cardiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan.
