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Erkina TY, et al.  (2008) Different requirements of the SWI/SNF complex for robust nucleosome displacement at promoters of heat shock factor and Msn2- and Msn4-regulated heat shock genes. Mol Cell Biol 28(4):1207-17

Abstract: Stress response in yeast cells is regulated by at least two classes of transcription activators - HSF and Msn2/4, which differentially affect promoter chromatin remodeling. We demonstrate that the deletion of SNF2, an ATPase activity containing subunit of the chromatin remodeling SWI/SNF complex, eliminates histone displacement, RNA polymerase II recruitment, and HSF binding at the HSP12 promoter, while delaying these processes at the HSP82 and SSA4 promoters. Out of the three promoters the double deletion of MSN2 and MSN4 eliminates both chromatin remodeling and HSF binding only at the HSP12 promoter, suggesting that Msn2/4 activators are primary determinants of chromatin disassembly at the HSP12 promoter. Unexpectedly, during heat shock the level of Msn2/4 at the HSP12 promoter declines. This is likely a result of promoter targeted Msn2/4 degradation associated with transcription complex assembly. While histone displacement kinetic profiles bear clear promoter specificity, the kinetic profiles of recovery from heat shock for all analyzed genes display equal or even faster nucleosome return rate, which is to some extent delayed by the deletion of SNF2.

Status: Published Type: Journal Article PubMed ID: 18070923

Topics addressed in this paper

Number of different genes curated to this paper: 11

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Topics Genes linked to topics (#1 - 10 )
HHT1 HHT2 HSF1 HSP12 HSP82 MSN2 MSN4 RPO21 SNF2 SSA4
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Topics Genes linked to topics (#11 )
UMP1
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