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Polymorphic phase behaviour of phospholipid membranes studied by infrared spectroscopy.
Structural and conformational changes of beta-lactoglobulin B: an infrared spectroscopic study of the effect of pH and temperature.
The spectrum of the protein after the second stage of thermal denaturation is the same as that after the first stage of alkaline denaturation (at pH 11), suggesting a common denaturation intermediate, which probably represents a crossover point in a complex potential hypersurface. Expand
Infrared studies of fully hydrated saturated phosphatidylserine bilayers. Effect of Li+ and Ca2+.
The thermotropic phase behavior of fully hydrated Na+ and/or NH4+ salts of 1,2-dimyristoyl-sn-glycero-3-phospho-L-serine (DMPS) was determined by temperature-dependent infrared spectra and the properties of the DMPS-Ca2+ complex were studied by infrared spectroscopy. Expand
Acholeplasma laidlawii membranes: a Fourier transform infrared study of the influence of protein on lipid organization and dynamics.
Fourier transform infrared spectroscopy is applied to the study of intact and deproteinated plasma membranes of Acholeplasma laidlawii, enriched biosynthetically with perdeuteriopalmitoyl chains to show the effects of protein on the phase transition. Expand
Infrared studies of fully hydrated unsaturated phosphatidylserine bilayers. Effect of Li+ and Ca2+.
Infrared spectroscopy has been used to characterize the thermal-phase behavior of fully hydrated 1,2-dioleoyl-sn-glycero-3-phospho-L-serine (POPS) and DOPS as well as their interaction with Li+ and Ca2+. Expand
Fourier transform methods for spectral resolution enhancement
Abstract Two mathematical procedures of band narrowing using Fourier transforms are discussed. The methods of Fourier self-deconvolution and Fourier derivation are easier to use and to control thanExpand
Infrared and 31P-NMR studies of the effect of Li+ and Ca2+ on phosphatidylserines.
It is shown that the degree of unsaturation in the hydrocarbon chains, and related to it, the cross-sectional area of the phospholipid or the surface charge density, determine the affinity of theosphatidylserine for the metal ion. Expand
Quantitative determination of hydrocarbon chain conformational order in bilayers of saturated phosphatidylcholines of various chain lengths by Fourier transform infrared spectroscopy.
The infrared spectra of aqueous dispersions of a homologous series of symmetric-chain, disaturated phosphatidylcholines, with fatty acyl chain lengths ranging from 12 to 19 carbons, have been measured at comparable reduced temperatures in their liquid-crystalline phases and yield a "per chain" intensity, which is directly related to the concentration of the different types of conformational defects. Expand
Components of Ginkgo biloba leaf wax
Characterization of the pretransition in 1,2-dipalmitoyl-sn-glycero-3-phosphocholine by Fourier transform infrared spectroscopy.
It is concluded that in the gel phase, at all temperatures below the main transition, the acyl chains are predominantly in all-trans conformations and that the temperature-dependent variations of spectral parameters result from changes in interchain interactions. Expand