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Increasing viscosity of E. coli chromatin with increasing shear

✍ Scribed by Douglas S. Thompson; John B. Hays; Stanley J. Gill

Publisher
Wiley (John Wiley & Sons)
Year
1969
Tongue
English
Weight
549 KB
Volume
7
Category
Article
ISSN
0006-3525

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✦ Synopsis

We have observed that the viscosity of a solution of E. wli chromatin increases as the shear to which the solution is subjected is suddenly increased. This dilatant effect is opposite to the usual thixotropic non-Newtonian effects that are observed in DNA solutions. We suggest that the observed dilatancy may be explained in terms of shear-induced aggregation of large DNA molecules. Conditions for aggregation are discussed in the context of the "cluster theory" of condensation.

πŸ“œ SIMILAR VOLUMES

Viscosity of chromatin solutions increas
Viscosity of chromatin solutions increases with increasing ionic strength
✍ RΓΌdiger Brust πŸ“‚ Article πŸ“… 1986 πŸ› Springer 🌐 English βš– 318 KB

Increasing the ionic strength of rat liver chromatin solutions above 0.4 M causes increasing viscosity. This indicates transformation of the compact chromatin molecules to more elongated forms. In the range of 0.4-0.5 M ionic strength histone H1 is dissociating continuously from the chromatin and th