Concentration of oxygen in lipid bilayers using a spin-label method. Biophys J 1983 Mar;41(3):283-6
Date
03/01/1983Pubmed ID
6301572Pubmed Central ID
PMC1329181DOI
10.1016/S0006-3495(83)84439-7Scopus ID
2-s2.0-0020726827 (requires institutional sign-in at Scopus site) 105 CitationsAbstract
The concentration of oxygen in the hydrocarbon region of lipid bilayer has been determined using a novel electron spin resonance (ESR) nitroxide-radical spin-probe method. For dimyristoylphosphatidylcholine (DMPC), the partition coefficient above the main transition temperature is approximately 3. Rapid decrease to 0.2 occurs below the pretransition temperature indicating exclusion of oxygen in the crystalline phase. The differences of molar free energy, enthalpy, and entropy of mixing between water and lipid have been determined for each phase.
Author List
Subczynski WK, Hyde JSAuthor
Witold K. Subczynski PhD Professor in the Biophysics department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
DimyristoylphosphatidylcholineElectron Spin Resonance Spectroscopy
Lipid Bilayers
Mathematics
Oxygen
Phosphatidylcholines
Temperature
Thermodynamics