Homeoviscous theory under pressure. I. The fatty acid composition of Tetrahymena pyriformis NT-1 grown at high pressure |
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| Authors: | A.G. MacDonald |
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| Affiliation: | Department of Physiology, Marischal College, University of Aberdeen, Aberdeen, AB9 1AS UK |
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| Abstract: | Tetrahymena was grown at up to 260 atm to see if the bilayer-ordering effect of pressure increased the proportion of unsaturated fatty acids in the membrane lipids. Both whole cells and microsomes showed no such change in their fatty acid composition. The most striking effect was seen in the former which showed a pressure-dependent increase in the proportion of C16:0 in relation to C16:Δ9. Homeoviscous adaptation to pressure does not appear to occur in this cell. |
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| Keywords: | Membrane lipid Fatty acid composition High pressure Homeoviscous adaptation (T. pyriformis) |
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