Quasi-Elastic Behavior of Solutions of Viral Capsid and RNA at Very Low Shearing Stresses

By the application of shearing stresses on the order of 10-3dyne cm-2(10-2μ N cm-2), via the magnetic viscodensimeter, extremely high relative viscosities (>500) were observed when turnip yellow mosaic virus was degraded in alkali into its capsid and RNA. The solutions, however, possessed a water...

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Published in:Proceedings of the National Academy of Sciences - PNAS 1975-09, Vol.72 (9), p.3501-3504
Main Authors: Hodgins, M. G., Hodgins, O. C., Kupke, D. W., Beams, J. W.
Format: Article
Language:English
Subjects:
Biophysics
Capsid
Cylinders
Hair
Mosaic Viruses
Plant Viruses
RNA
RNA, Viral
Shear stress
Solutions
Temperature
Torque
Viral Proteins
Viruses
Viscosity
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container_issue 9
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container_title Proceedings of the National Academy of Sciences - PNAS
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creator Hodgins, M. G.
Hodgins, O. C.
Kupke, D. W.
Beams, J. W.
description By the application of shearing stresses on the order of 10-3dyne cm-2(10-2μ N cm-2), via the magnetic viscodensimeter, extremely high relative viscosities (>500) were observed when turnip yellow mosaic virus was degraded in alkali into its capsid and RNA. The solutions, however, possessed a watery consistency at this stage and exhibited a quasi-elastic character by rotor-recoil experiments. The development of this curious behavior was concentration and temperature dependent; it was not seen
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Whereas reversibility was demonstrated when the shearing stresses exceeded the elastic resistance [0.17 dyne cm-2(1.7 μ N cm-2)], thorough mixing usually resulted in a normal behavior of the solutions thereafter. Values for the modulus of rigidity at 20 degrees for about 1% virus concentration was &lt; 2 × 10-2dyne cm-2rad-1(0.2 μ N cm-2rad-1), which, while extremely small, was reproducible. 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source Open Access: PubMed Central; JSTOR Archival Journals and Primary Sources Collection
subjects Biophysics
Capsid
Cylinders
Hair
Mosaic Viruses
Plant Viruses
RNA
RNA, Viral
Shear stress
Solutions
Temperature
Torque
Viral Proteins
Viruses
Viscosity
title Quasi-Elastic Behavior of Solutions of Viral Capsid and RNA at Very Low Shearing Stresses
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