Membrane morphology modifications induced by hydroquinones.

Sérgio S Funari, Vivian Rebbin, Liliana Marzorati, Claudio di Vitta

HASYLAB/Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany. sergio.funari@desy.de

Langmuir : the ACS journal of surfaces and colloids 2011 Jul 5

filter terms:

We synthesize and characterize alkylthiohydroquinones (ATHs) in order to investigate their interactions with lipid model membranes, POPE and POPC. We observe the formation of structures with different morphologies, or curvature of the lipid bilayer, depending on pH and increasing temperature. We attribute their formation to changes in the balance charge/polarity induced by the ATHs. Mixtures of ATHs with POPE at pH 4 form two cubic phases, P4(3)32 and Im3m, that reach a maximum lattice size at 40 °C while under basic conditions these phases only expand upon heating from room temperature. The cubic phases coexist with lamellar or hexagonal phases and are associated with inhomogeneous distribution of the ATH molecules over the lipid matrix. The zwitterionic POPC does not form cubic phases but instead shows lamellar structures with no clear influence of the 2,6-BATH. © 2011 American Chemical Society

Citation

Sérgio S Funari, Vivian Rebbin, Liliana Marzorati, Claudio di Vitta. Membrane morphology modifications induced by hydroquinones. Langmuir : the ACS journal of surfaces and colloids. 2011 Jul 5;27(13):8257-62