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Reference: Takayama S, et al. (2011) N-terminal short fragment of TUP1 confers resistance to 5-bromodeoxyuridine in the yeast Saccharomyces cerevisiae. Biochem Biophys Res Commun 411(1):25-31

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Abstract

Small molecules that exhibit biological activity have contributed to the understanding of the molecular mechanisms of various biological phenomena. 5-Bromodeoxyuridine (BrdU) is a thymidine analogue that modulates various biological phenomena such as cellular differentiation and cellular senescence in cultured mammalian cells. Although BrdU is thought to function through changing chromatin structure and gene expression, its precise molecular mechanisms are not understood. To study the molecular mechanism for the action of BrdU, we have employed the yeast Saccharomyces cerevisiae as a model system, and screened multi-copy suppressor genes that confer resistance to BrdU. Our genetic screen has revealed that expression of the N-terminal short fragment of TUP1, and also disruption of HDA1 or HOS1, histone deacetylases that interact with TUP1, conferred resistance to BrdU. These results suggest the implication of the chromatin proteins in the function of BrdU, and would provide novel clues to answer the old question of how BrdU modulates various biological phenomena.

Reference Type
Journal Article
Authors
Takayama S, Fujii M, Nakagawa Y, Miki K, Ayusawa D
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