Membrane Lipid Composition of Streptococcus pyogenes and Derived L Form^*

The Bacterial Membrane

“…In some Gram-positive species they account for only a few percent of the total lipid. However, their localization in the bacterial membrane has been clearly established in several instances (Vorbeck and Marinetti, 1965;Cohen and Panos, 1966;Bishop et al, 1 967a). Brundish et al (1967) suggested that these glycolipids can adopt a conformation in which hydroxyl groups are on one side of the molecule and the lipophilic constituents are on the other side.…”

Effect of Glycine on Phospholipids of Mycobacterium smegmatis ATCC 607

“…For example, in the L-form of Streptococcuspyogenes the amount of glycolipid increases whereas that of the phospholipids decreases. In addition, the total lipid content of the L-form membrane of this organism is greater than that of the protoplast membrane (Cohen & Panos, 1966;Panos, 1967). As Panos (1967) has pointed out, the altered phospholipid content of the L-form membrane may have a significant effect on the organism, as lipids may orientate enzymes into a favourable configuration for activity.…”

Phase Space Representation of Modes in Optical Waveguides

“…plane, in which case we can omit the z variable from the formulae . For the general case of vectorial modal fields, for each two components of the field a corresponding cross-WDF [9] can be defined such that we have a PS description in terms of a tensorial WDF [10] .…”