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Mol. Cell. Biol., Jun 1997, 3323-3334, Vol 17, No. 6
Y Cao, BR Cairns, RD Kornberg and BC Laurent
Several eukaryotic multiprotein complexes, including the Saccharomyces
cerevisiae Snf/Swi complex, remodel chromatin for transcription. In
contrast to the Snf/Swi proteins, Sfh1p, a new Snf5p paralog, is essential
for viability. The evolutionarily conserved domain of Sfh1p is sufficient
for normal function, and Sfh1p interacts functionally and physically with
an essential Snf2p paralog in a novel nucleosome- restructuring complex
called RSC (for remodels the structure of chromatin). A
temperature-sensitive sfh1 allele arrests cells in the G2/M phase of the
cell cycle, and the Sfh1 protein is specifically phosphorylated in the G1
phase. Together, these results demonstrate a link between chromatin
remodeling and progression through the cell division cycle, providing
genetic clues to possible targets for RSC function.
Copyright © 1997, American Society for Microbiology
Sfh1p, a component of a novel chromatin-remodeling complex, is required for cell cycle progression
Department of Microbiology and Immunology and Morse Institute of Molecular Biology and Genetics, State University of New York, Brooklyn 11203, USA.
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