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Differential permeation of artemia cysts and cucumber seeds by alcoholsThe rate of penetration of the simpler alcohols into brine shrimp cysts and cucumber seeds was studied. In solutions below 70% the rate of penetration is related to lipid solvent capacity of the alcohol. In concentrations above 70%, particularly in absolute alcohols, methanol penetrates brine shrimp rapidly and ethanol penetrates slowly. All the other alcohols tested did not penetrate the dormant structures. Ethionine and deuteroxy-methanol did not affect the rate of penetration of methanol. It is suggested that in dehydrated membranes the lipid moiety is protected by a continuous sheet of protein. Methanol, which is fairly similar to water, is probably able to penetrate the membrane by initiating a conformation change in the protein, exposing the lipid which subsequently dissolves in the methanol thus destroying the membrane.
Document ID
19750058756
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Smith, C. W.
Siegel, S. M.
(Hawaii, University Honolulu, Hawaii, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Publication Information
Publication: Journal of Histochemistry and Cytochemistry
Volume: 23
Issue: 1, 19
Subject Category
Life Sciences (General)
Accession Number
75A42828
Funding Number(s)
CONTRACT_GRANT: NGL-12-001-042
Distribution Limits
Public
Copyright
Other

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