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Increasing viscosity of E. coli chromatin with increasing shear (1969)

Thompson, Douglas S. ; Hays, John B. ; Gill, Stanley J.

New York : Wiley-Blackwell

Biopolymers 7 (1969), S. 571-580

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ISSN: 0006-3525

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: We have observed that the viscosity of a solution of E. coli 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.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/bip.1969.360070413

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