[Investigation of DNA complexes with histones F3 and F3+F2a2]

M A Sibileva, T N Osipova, A O Zalenskiĭ

|May 1, 1976

Abstract:

Characteristic viscosity, sedimentation constant and optical anisotropy were studied of the complexes formed between DNA and histone fractions F3 and F3+F2a2. The parameters mentioned continuously change with the increase of protein content within the complex. Analysis of experimental data shows that binding of a histone bads to a decrease of size and thermodynamic rigidity of the DNA molecule. On the basis of results obtained a model of F3 histone binding with DNA is suggested, amino acid sequence of this protein being taken into account. Comparison of behaviour of nucleohistones DNA+F3 and DNA+F1 studied previously testifies different way of binding of these histones to DNA.

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Abstract:

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