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. 1977 May;74(5):1879-83.
doi: 10.1073/pnas.74.5.1879.

Involvement of histone H1 in the organization of the chromosome fiber

M Renz, P Nehls, J Hozier

Involvement of histone H1 in the organization of the chromosome fiber

M Renz et al. Proc Natl Acad Sci U S A. 1977 May.

Abstract

At high ionic strength (e.g., physiological salt concentrations) chromosome fibers are 200 A in diameter and composed of discrete globular structures that are held together by histone H1. At low ionic strength the fibers unfold and appear as the familiar chains of nucleosomes (80 A in diameter). The unfolding of chromosome fibers occurs within a narrow salt range. It results from a change in the mode of the interaction between histone H1 and the chromosome fiber and is very likely the consequence of a change from cooperative binding between histone H1 and DNA to a noncooperative binding. In the noncooperative binding state histone H1 molecules are randomly redistributed along the chromosome fiber.

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