<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Penetration of the liposome membranes doped with vanadium complex formed in the liquid-crystalline phase from egg yolk lecithin (EYL) by the TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) spin probes has been investigated. The penetration process was followed by 360 hours at 24°C, using the electron spin resonance (EPR) method. The spectroscopic parameter of the partition (<italic>F</italic>) of this probe indicated that a maximum rigidity of the membrane was at 3% concentration of the vanadium complex. Computer simulations showed that the increase in the rigidity of the membrane corresponds to the closure of gaps in the surface layer of the membrane, and indicates the essential role of the membrane surface in transport processes.</p></abstract>

Penetration of the liposome membranes doped with vanadium complex formed in the liquid-crystalline phase from egg yolk lecithin (EYL) by the TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) spin probes has been investigated. The penetration process was followed by 360 hours at 24°C, using the electron spin resonance (EPR) method. The spectroscopic parameter of the partition (F) of this probe indicated that a maximum rigidity of the membrane was at 3% concentration of the vanadium complex. Computer simulations showed that the increase in the rigidity of the membrane corresponds to the closure of gaps in the surface layer of the membrane, and indicates the essential role of the membrane surface in transport processes.

The dynamics of the surface layer of lipid membranes doped by vanadium complex: computer modeling and EPR studies

Institute of Physics, Opole University, 48 Oleska Str., 45-052 Opole, Poland

Nukleonika

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Penetration of the liposome membranes doped with vanadium complex formed in the liquid-crystalline phase from egg yolk lecithin (EYL) by the TEMPO...

The dynamics of the surface layer of lipid membranes doped by vanadium complex: computer modeling and EPR studies

Publié en ligne: 06 août 2015

Pages: 395 - 398

Reçu: 20 nov. 2014

Accepté: 16 avr. 2015

DOI: https://doi.org/10.1515/nuka-2015-0070

Mots clés
EPR probe, lipid membrane, membrane fluidity, Monte Carlo simulation

© Ryszard Olchawa et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The dynamics of the surface layer of lipid membranes doped by vanadium complex: computer modeling and EPR studies

Publié en ligne: 06 août 2015

Pages: 395 - 398

Reçu: 20 nov. 2014

Accepté: 16 avr. 2015

DOI: https://doi.org/10.1515/nuka-2015-0070

Mots clésEPR probe, lipid membrane, membrane fluidity, Monte Carlo simulation

© Ryszard Olchawa et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
EPR probe, lipid membrane, membrane fluidity, Monte Carlo simulation