Freezing of phosphocholine headgroup in fully hydrated sphingomyelin bilayers and its effect on the dynamics of nonfreezable water at subzero temperatures

Differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR) spectroscopy are applied to characterize the nonfreezable water molecules in fully hydrated D2O/sphingomyelin at temperatures below 0 degrees C. Upon cooling, DSC thermogram displays two thermal transitions peaked at -11 an...

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Veröffentlicht in:	The Journal of biological chemistry 1991-07, Vol.266 (21), p.13602-13606
Hauptverfasser:	Wu, W G, Chi, L M, Yang, T S, Fang, S Y
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical, structural and metabolic biochemistry BASIC BIOLOGICAL SCIENCES Biological and medical sciences Calorimetry, Differential Scanning CHEMICAL COMPOSITION DEUTERIUM Deuterium Oxide ESTERS FREEZING Fundamental and applied biological sciences. Psychology HYDROGEN COMPOUNDS HYDROGEN ISOTOPES ISOTOPE APPLICATIONS ISOTOPES LIGHT NUCLEI Lipid Bilayers - chemistry LIPIDS MAGNETIC RESONANCE Magnetic Resonance Spectroscopy NUCLEAR MAGNETIC RESONANCE NUCLEI ODD-ODD NUCLEI ORGANIC COMPOUNDS ORGANIC PHOSPHORUS COMPOUNDS Other biological molecules Ovum OXYGEN COMPOUNDS phosphocholine PHOSPHOLIPIDS Phosphorylcholine - chemistry RESONANCE Sphingolipids sphingomyelin SPHINGOMYELINS Sphingomyelins - chemistry SPIN ECHO STABLE ISOTOPES 550201 > Biochemistry-- Tracer Techniques Structure-Activity Relationship STRUCTURE-ACTIVITY RELATIONSHIPS TEMPERATURE DEPENDENCE THERMODYNAMICS TRACER TECHNIQUES WATER
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