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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Infrared spectroscopic studies on the phosphatidylserine bilayer interacting with calcium ion: effect of cholesterol.

Fourier transform infrared (IR) spectroscopic studies of phosphatidylserine/cholesterol/Ca2+ complexes are reported using the synthetic phosphatidylserines (PS) 1,2-dioleoyl-sn-glycero-3-phospho-L-serine (DOPS), 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-L-serine (POPS), and 1,2-dimyristoyl-sn-glycero-3-phospho-L-serine (DMPS). IR spectra reveal that cholesterol does not significantly alter the binding nature of Ca2+ to PS molecules; Ca2+ binds to the phosphate ester group of PS in the presence of cholesterol up to 50 mol% as in the case of pure PS bilayers. However, the IR data indicate that the presence of cholesterol induces disorder of the acyl chain packing, increases the degree of immobilization of the interfacial and polar regions, and increases the degree of dehydration of the PS/Ca2+ complexes.[1]

References

  1. Infrared spectroscopic studies on the phosphatidylserine bilayer interacting with calcium ion: effect of cholesterol. Choi, S., Ware, W., Lauterbach, S.R., Phillips, W.M. Biochemistry (1991) [Pubmed]
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