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. 1984 Mar;45(3):633–635. doi: 10.1016/S0006-3495(84)84202-2

Effect of lanthanum ions on the phase transitions of lecithin bilayers.

B Z Chowdhry, G Lipka, A W Dalziel, J M Sturtevant
PMCID: PMC1434875  PMID: 6546889

Abstract

Interaction of lanthanum ions (La3+) with 1,2 dipalmitoyl-sn-glycero-3-phosphorylcholine (DPPC) causes an increase in Tc, the temperature of maximal excess heat capacity, and the width of the gel-to-liquid crystalline transition. At a mole ratio of La3+ to DPPC sufficient to remove the hydrocarbon chain tilt angle of DPPC, the changes in the thermodynamic parameters of the pretransition are minor, Tc and the width were unaltered and the enthalpy was reduced by only 10%. This suggests that the change in tilt angle is not a necessary concomitant of the pretransition.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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