Abstract
The 31P magnetic resonance spectrum of nucleosome cores from calf thymus nuclei has been measured. The spectrum consists of a single symmetric line, with a maximum second component of 5%. It is argued that this reflects a single average state of the DNA backbone, and does not support models that invoke backbone kinking at a frequency of 1 in 10 base pairs.
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Kallenbach, N., Appleby, D. & Bradley, C. 31P magnetic resonance of DNA in nucleosome core particles of chromatin. Nature 272, 134–138 (1978). https://doi.org/10.1038/272134a0
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DOI: https://doi.org/10.1038/272134a0
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