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Cited by 346

The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

Identification of a small molecule inhibitor of Sir2p

Open access
Bedalov, Antonio, Gatbonton, Tonibelle, Irvine, William P., Gottschling, Daniel E., Simon, Julian A.·2001·Proceedings of the National Academy of Sciences

Abstract

Sir2p is an NAD + -dependent histone deacetylase required for chromatin-dependent silencing in yeast. In a cell-based screen for inhibitors of Sir2p, we identified a compound, splitomicin, that creates a conditional phenocopy of a sir2 deletion mutant in Saccharomyces cerevisiae . Cells grown in the presence of the drug have silencing defects at telomeres, silent mating-type loci, and the ribosomal DNA. In addition, whole genome microarray experiments show that splitomicin selectively inhibits Sir2p. In vitro , splitomicin inhibits NAD + -dependent histone deacetylase activity (HDA) of the Sir2 protein. Mutations in SIR2 that confer resistance to the drug map to the likely acetylated histone tail binding domain of the protein. By using splitomicin as a chemical genetic probe, we demonstrate that continuous HDA of Sir2p is required for maintaining a silenced state in nondividing cells.

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Metadata

Authors
Bedalov, A., Gatbonton, T., Irvine, W. P., Gottschling, D. E., & Simon, J. A.
Venue
Proceedings of the National Academy of Sciences
Published
2001-12-18
Volume
98
Issue
26
Pages
15113-15118
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2149703257
Cited by
346
References
47
FWCI
7.81
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Identification of a small molecule inhibitor of Sir2p. https://app.cochat.ai/papers/10.1073/pnas.261574398
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Bedalov, A., Gatbonton, T., Irvine, W. P., Gottschling, D. E., & Simon, J. A. (2001). Identification of a small molecule inhibitor of Sir2p. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.261574398

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