Both membranes of Mycoplasma laidlawii and water dispersions of protein-free membrane
lipids exhibit thermal phase transitions that can be detected by differential scanning …

X-ray diffraction patterns from dispersions of isolated membranes show that the membrane
fatty acyl chains experience a thermal phase transition. Below the transition the chains are in …

Thermotropic mesomorphism (ie, phasechanges induced by heat corresponding to the
“melting” of the hydrocarbon chains within a bilayer configuration) have been demonstrated …

Use of a very sensitive differential calorimeter has revealed two major regions of heat
absorption in purified plasma membranes of Mycoplasma laidlawii. These consist of a …

Uniform lipid layers, in biological membranes, are thought to constitute the passive diffusion
barriers between cellular compartments. The question we wish to ask here is to what extent …

X-ray diffraction patterns from intact, isolated Mycoplasma laidlawii membranes at
temperatures above and below the thermal phase transition of the membrane lipids reveal …

Differential scanning calorimetry has been applied to the study of some simple model
biomembranes, ie lipid-water systems, and the endothermic phase transitions which they …

The membrane lipids in living Mycoplasma laidlawii exhibit a phase transition characteristic
of that from crystal to liquid crystal within the bilayer conformation. The transition occurs at …

A. Carruthers* and DL Melchior* abstract: The relationship between osmotic water permea-
bility and bilayer physical state was examined in large uni-lamellar vesicles (LUVs) by using …

Theoretical models for the organization of mixed steroid-lecithin membranes are developed
and checked against electron spin resonance measurements. In part II of this series we had …