Extended hydrogen-bonded structures of phosphatidylethanolamine

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DOIResolve DOI: http://doi.org/10.1016/0009-3084(88)90079-5
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Journal titleChemistry and Physics of Lipids
SubjectPhosphatidylethanolamine; Hydrogen-bonds; Fourier transformed infrared spectroscopy; Freeze fracture electron microscopy
AbstractThe structure of phosphatidylethanolamine in pure dry hexane was studied. Viscosity measurements show that the hexane solution of PE has a very high viscosity, while freeze fracture electron microscopy revealed extensive fibre-like structures. These extended structures are disrupted by the addition of small amounts of water or organic solvents which are capable of hydrogen-bonding. The Fourier transform infrared spectra of the lipid solutions in dry and hydrated hexane show considerable differences in the phosphate and ethanolamine absorption bands, and demonstrate that the viscous fibre-like structures formed by phosphtidylethanolamine in dry hexane consist of extended intermolecular hydrogen-bonds, similar to those found in the solid lipid, with the ammonium group as the hydrogen-donor and the phosphate group as the hydrogen-acceptor. The high viscosity is not observed in hexane solution of phosphatidylcholine.
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AffiliationNational Research Council Canada
Peer reviewedYes
NPARC number23001412
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Record identifier398051b4-2c3b-4d31-84c8-f63ccf869066
Record created2017-02-02
Record modified2017-02-02
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