Direct detection of linker DNA bending in defined-length oligomers of chromatin.
收藏PubMed Central2026-05-16 收录
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https://pmc.ncbi.nlm.nih.gov/articles/PMC54796/
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资源简介：
Linker DNA, which connects between nucleosomes in chromatin, is short and, therefore, may be essentially straight and inflexible. We have carried out hydrodynamic and electron microscopic studies of dinucleosomes--fragments of chromatin containing just two nucleosomes--to test the ability of linker DNA to bend. We find that ionic conditions that stabilize the folding of long chromatin cause linker DNA in dinucleosomes to bend, bringing the two nucleosomes into contact. The results uphold a key prediction of the solenoid model of chromosome folding and suggest a mechanism by which proteins that are separated along the DNA can interact by direct contact. IMAGES:
提供机构：
National Academy of Sciences
