Tier 3 — preclinical

Structural Basis of Sirtuin 6 Activation by Synthetic Small Molecules

Weijie You, Dante Rotili, Tie-Mei Li, Christian Kambach, Marat Meleshin, Mike Schutkowski, Katrin F Chua, Antonello Mai, Clemens Steegborn
Angewandte Chemie International Edition 2017 56(4):1007-1011

Bibliography

PubMed
PMID 27990725
Funding
Funding indexed for this publication includes National Institute on Aging support.
Competing interests
No competing-interest statement was identified in the accessible publication record.

Study snapshot

DesignMedicinal-chemistry, biochemical activation and X-ray crystallography study.
ModelPurified SIRT6 enzyme, peptide/nucleosome substrates and structural complexes.
SampleNot applicable; biochemical and structural experiments.
InterventionPyrrolo[1,2-a]quinoxaline SIRT6-activating compounds.
DurationNot applicable.
EndpointsSIRT6 deacetylase activation; compound binding; substrate dependence; crystal structure and binding-site interactions

What the study showed, in plain terms

This study supplied structural proof that synthetic small molecules can directly activate SIRT6. The compounds bound a SIRT6-specific pocket and enhanced deacetylation of peptide and nucleosome substrates.

Key findings

Pyrroloquinoxaline compounds directly activated the SIRT6 catalytic core, and crystal structures mapped the interaction to an acyl-channel pocket.

What this study can and cannot tell us

The work is biochemical and structural; it does not establish efficacy or safety of SIRT6 activation in people.

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