High pressure infrared spectroscopy of lipid bilayers : new tests for interdigitation

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DOIResolve DOI: http://doi.org/10.1016/0005-2736(87)90289-6
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TypeArticle
Journal titleBiochimica et Biophysica Acta (BBA) - Biomembranes
ISSN0005-2736
Volume900
Issue1
Pages163167
SubjectLipid bilayer; High pressure infrared spectroscopy; Interdigitated gel phase; Fourier transform infrared spectroscopy
AbstractHigh-pressure infrared spectroscopy is used to compare the barotropic behaviour of various interdigitated lipid bilayer systems (1,2-di-O-hexadecyl-sn-glycero-3-phosphocholine, 1,3-dipalmitoyl-sn-glycero-2-phosphocholine and 1-palmitoyl-sn-glycero-3-phosphocholine) with non-interdigitated bilayers of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine. In the pressure range between 0 and 20 kbar, we have monitored the pressure dependence of the relative peak height intensity ratio of the chain methylene scissoring band, δCH₂, and its correlation field component band, δ′CH₂. We demonstrate that this parameter, in conjunction with a visual inspection of the pressure-induced correlation field splittings of the methylene scissoring and rocking mode bands, can provide reliable indications of chain interdigitation.
Publication date
PublisherElsevier B.V.
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedYes
NPARC number23001255
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Record identifier0fe54dab-57c3-4949-95e8-2e0cd592c4ff
Record created2017-01-12
Record modified2017-01-12
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