Structure of nucleosome core particles of chromatin - PubMed (original) (raw)

. 1977 Sep 1;269(5623):29-36.

doi: 10.1038/269029a0.

• PMID: 895884
• DOI: 10.1038/269029a0

Structure of nucleosome core particles of chromatin

J T Finch et al. Nature. 1977.

Abstract

Cystals have been obtained on nucleosome cores and analysed by X-ray diffraction and electron microscopy. The core is a flat particle of dimensions about 110 X 110 X 57 A, somewhat wedge shaped, and strongly divided into two 'layers', consistent with the DNA being wound into about 1 3/4 turns of a flat superhelix of a pitch about 28 A. The organisation of the DNA can be correlated with the results to enzyme digestion studies. A change in the screw of the DNA double helix on nucleosome formation can be deduced.

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