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Genome information, which is three-dimensionally organized within cells as chromatin, is searched and read by various proteins for diverse cell functions. Although how the protein factors find their targets remains unclear, the dynamic and flexible nature of chromatin is likely crucial. Using a combined approach of fluorescence correlation spectroscopy, single-nucleosome imaging, and Monte Carlo computer...
A long strand of DNA is wrapped around the core histone and forms a nucleosome. Although the nucleosome has long been assumed to be folded into 30-nm chromatin fibres, their structural details and how such fibres are organised into a nucleus or mitotic chromosome remain unclear. When we observed frozen hydrated (vitrified) human mitotic cells using cryo-electron microscopy, which enables direct high-resolution...
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