Proton and/or sodium electrochemical gradients are critical to energy handling at the plasma
membranes of all living cells. Sodium gradients are used for animal plasma membranes, all …

A recently proposed model for proton leakage across biological membranes [Prog. Lipid
Res. 40 (2001) 299] suggested that hydrocarbons specifically in the center of the lipid …

Evidence has been gathering from several laboratories that protons in proton-pumping
membranes move along or within the bilayer rather than exchange with the bulk phase …

Proton permeation of the lipid bilayer barrier has two unique features. First, permeability
coefficients measured at neutral pH ranges are six to seven orders of magnitude greater …

The appearance of “membrane-active sterols” in biological membranes of eukaryocytes is
one of the major steps in membrane evolution. This is exemplified best by membrane-active …

We review evidence that sterols can form stoichiometric complexes with certain bilayer
phospholipids, and sphingomyelin in particular. These complexes appear to be the basis for …

Cholesterol is essential for proper function and regulation of eukaryotic membranes, and
significant amounts of metabolic energy are dedicated to controlling cellular cholesterol …

Sterols are important components of many biological membranes, and changes in sterol
levels can have dramatic effects on membrane properties. Sterols are transported rapidly …

This review deals with sterol structure-function relationships in natural and artificial
membranes covering for the most part research carried out in this laboratory during the last 4 …

Sterols and sphingolipids are considered mainly eukaryotic lipids even though both are
present in some prokaryotes, with sphingolipids being more widespread than sterols. Both …