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22 august 2019 20:00:28

DNA sequence is a major determinant of tetrasome dynamics (Biophysical Journal)

Eukaryotic genomes are hierarchically organized into protein-DNA assemblies for compaction into the nucleus. Nucleosomes, with the (H3-H4)2 tetrasome as a likely intermediate, are highly dynamic in nature by way of several different mechanisms. We have recently shown that tetrasomes spontaneously change the direction of their DNA wrapping between left- and right-handed conformations, which may prevent torque build-up in chromatin during active transcription or replication. DNA sequence has been shown to strongly affect nucleosome positioning throughout chromatin. Digg Facebook Google StumbleUpon Twitter
28 viewsCategory: Biophysics
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