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Fission yeast SWI/SNF and RSC complexes show compositional and functional differences from budding yeast.


ABSTRACT: SWI/SNF chromatin-remodeling complexes have crucial roles in transcription and other chromatin-related processes. The analysis of the two members of this class in Saccharomyces cerevisiae, SWI/SNF and RSC, has heavily contributed to our understanding of these complexes. To understand the in vivo functions of SWI/SNF and RSC in an evolutionarily distant organism, we have characterized these complexes in Schizosaccharomyces pombe. Although core components are conserved between the two yeasts, the compositions of S. pombe SWI/SNF and RSC differ from their S. cerevisiae counterparts and in some ways are more similar to metazoan complexes. Furthermore, several of the conserved proteins, including actin-like proteins, are markedly different between the two yeasts with respect to their requirement for viability. Finally, phenotypic and microarray analyses identified widespread requirements for SWI/SNF and RSC on transcription including strong evidence that SWI/SNF directly represses iron-transport genes.

SUBMITTER: Monahan BJ 

PROVIDER: S-EPMC2559950 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature

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Fission yeast SWI/SNF and RSC complexes show compositional and functional differences from budding yeast.

Monahan Brendon J BJ   Villén Judit J   Marguerat Samuel S   Bähler Jürg J   Gygi Steven P SP   Winston Fred F  

Nature structural & molecular biology 20080711 8


SWI/SNF chromatin-remodeling complexes have crucial roles in transcription and other chromatin-related processes. The analysis of the two members of this class in Saccharomyces cerevisiae, SWI/SNF and RSC, has heavily contributed to our understanding of these complexes. To understand the in vivo functions of SWI/SNF and RSC in an evolutionarily distant organism, we have characterized these complexes in Schizosaccharomyces pombe. Although core components are conserved between the two yeasts, the  ...[more]

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