Structure of a RSC–nucleosome complex and insights into chromatin remodeling
Structure of a RSC–nucleosome complex and insights into chromatin remodeling
ATP-dependent chromatin-remodeling complexes, such as RSC, can reposition, evict or restructure nucleosomes. A structure of a RSC-nucleosome complex with a nucleosome determined by cryo-EM shows the nucleosome bound in a central RSC cavity. Extensive interaction of RSC with histones and DNA seems to destabilize the nucleosome and lead to an overall ATP-independent rearrangement of its structure. Nucleosomal DNA appears disordered and largely free to bulge out into solution as required for remodeling, but the structure of the RSC-nucleosome complex indicates that RSC is unlikely to displace the octamer from the nucleosome to which it is bound. Consideration of the RSC-nucleosome structure and published biochemical information suggests that ATP-dependent DNA translocation by RSC may result in the eviction of histone octamers from adjacent nucleosomes.
- Stanford Medicine United States
- Scripps Research Institute United States
- Stanford University United States
DNA-Binding Proteins, Models, Molecular, Saccharomyces cerevisiae Proteins, Cryoelectron Microscopy, Image Processing, Computer-Assisted, Chromatin Assembly and Disassembly, Protein Structure, Quaternary, Nucleosomes, Transcription Factors
DNA-Binding Proteins, Models, Molecular, Saccharomyces cerevisiae Proteins, Cryoelectron Microscopy, Image Processing, Computer-Assisted, Chromatin Assembly and Disassembly, Protein Structure, Quaternary, Nucleosomes, Transcription Factors
19 Research products, page 1 of 2
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