Biophysical Journal 41: 283-286 (1983)
© 1983 the Biophysical Society

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Subczynski, W K Articles by Hyde, J S Search for Related Content PubMed PubMed Citation Articles by Subczynski, W K Articles by Hyde, J S

Concentration of oxygen in lipid bilayers using a spin-label method.

ABSTRACT

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.

This article has been cited by other articles:

				W. K. Subczynski, A. Wisniewska, J. S. Hyde, and A. Kusumi Three-Dimensional Dynamic Structure of the Liquid-Ordered Domain in Lipid Membranes as Examined by Pulse-EPR Oxygen Probing Biophys. J., March 1, 2007; 92(5): 1573 - 1584. [Abstract] [Full Text] [PDF]

				X. Liu, M. J. S. Miller, M. S. Joshi, D. D. Thomas, and J. R. Lancaster Jr. Accelerated reaction of nitric oxide with O2 within the hydrophobic interior of biological membranes PNAS, March 3, 1998; 95(5): 2175 - 2179. [Abstract] [Full Text] [PDF]