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Influence of Calcium on Phosphatidylethanolamine. An Investigation of the Structure at High pH

Influence of Calcium on Phosphatidylethanolamine. An Investigation of the Structure at High pH

K Harlos, H Eibl

Biochim Biophys Acta. 1980 Sep 2;601(1):113-22.

PMID: 7407158

Abstract:

The influence of calcium on the structure of 1,2-dihexadecyl-sn-glycero-3-phosphoethanolamine was investiged at pH 8 and 12 by differential scanning calorimetry and by X-ray diffraction. At pH 12, where the amino group of phosphatidylethanolamine is partly deprotonated, two separate lamellar phases are observed at 60 degrees C in the presence of CaCl2; one phase is metastable and the other is present in a crystalline structure. At high temperature (90 degrees C), the small-angle diffraction lines indicate the existence of a hexagonal phase at pH 8. At pH 12 a hexagonal phase is detected only in the presence of calcium.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP61423618	1,2-Dihexadecyl-sn-glycero-3-phosphoethanolamine		61423-61-8	Price

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