期刊
NATURE STRUCTURAL BIOLOGY
卷 9, 期 4, 页码 263-267出版社
NATURE AMERICA INC
DOI: 10.1038/nsb776
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资金
- NIGMS NIH HHS [R37 GM049650, R01 GM049650] Funding Source: Medline
Members of the ATP-dependent family of chromatin remodeling enzymes play key roles in the regulation of transcription, development, DNA repair and cell cycle control. We find that the remodeling activities of the ySWI/SNF, hSWI/SNF, xMi-2 and xACF complexes are nearly abolished by incorporation of linker histones into nucleosomal array substrates. Much of this inhibition is independent of linker histone-induced folding of the arrays. We also find that phosphorylation of the linker histone by Cdc2/Cyclin B kinase can rescue remodeling by ySWI/SNF. These results suggest that linker histones exert a global, genome-wide control over remodeling activities, implicating a new, obligatory coupling between linker histone kinases and ATP-dependent remodeling enzymes.
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