Bacillus are aerobic spore-forming bacteria that are known to lead to specific diseases, such as anthrax and food poisoning. This study focuses on the characterization of these bacteria by the detection of lipids extracted from 33 well-characterized strains from the Bacillus and Brevibacillus genera, with the aim to discriminate between the different species. For the purpose of analysing the li...

The bacterial human pathogen Chlamydia trachomatis invades cells as an infectious elementary body (EB). The EB is internalized into a vacuole that is hidden from the host defense mechanism, and is modified to sustain the development of the replicative reticulate body (RB). Inside this parasitophorous compartment, called the inclusion, the pathogen survives supported by an active exchange of nut...

The organization of lipids within biological membranes is poorly understood. Some studies have suggested lipids group into microdomains within cells, but the evidence remains controversial due to non-native imaging techniques. A recently developed NanoSIMS technique indicated that sphingolipids group into microdomains within membranes of human fibroblast cells. We extended this NanoSIMS approac...

The complex polar lipids of the hot spring cyanobacterial mat in the 50 to 55 degrees C region of Octopus Spring, Yellowstone National Park, and of thermophilic bacteria cultivated from this or similar habitats, were compared in an attempt to understand the microbial sources of the major lipid biomarkers in this community. Intact complex lipids were analyzed directly by fast atom bombardment ma...

S&o (1) has clearly identified the branched chain fatty acids, isopentadecanoic and isoheptadecanoic, in the lipids of Bacillus subtilis (natto). Another branched chain fatty acid, 12-methyltetradecanoic (sarcinic acid), has also been isolated from the lipids of a species of Surcina by Akashi and Saito (2). It is important to note that, these branched chain fatty acids occur in the bacterial li...

Spiroplasma poulsonii is a maternally transmitted bacterial endosymbiont that is naturally associated with Drosophila melanogaster. S. poulsonii resides extracellularly in the hemolymph, where it must acquire metabolites to sustain proliferation. In this study, we find that Spiroplasma proliferation specifically depletes host hemolymph diacylglyceride, the major lipid class transported by the l...

S&o (1) has clearly identified the branched chain fatty acids, isopentadecanoic and isoheptadecanoic, in the lipids of Bacillus subtilis (natto). Another branched chain fatty acid, 12-methyltetradecanoic (sarcinic acid), has also been isolated from the lipids of a species of Surcina by Akashi and Saito (2). It is important to note that, these branched chain fatty acids occur in the bacterial li...

Increasing world population, urbanization and industrialization are driving global increases in wastewater production. Wastewater comprises significant amounts of chemical energy primarily in the form of organic molecules (in particular lipids), which are currently not being recovered comprehensively. Within biological wastewater treatment (BWWT) systems, specialized microorganisms assimilate a...

The calixarene derivative used in this study (tetra-p-guanidinoethylcalix[4]arene) shows vitro activity against different Gram-positive and Gram-negative bacteria. interaction between bacterial cell membranes the water-soluble was investigated using model lipids spread as monomolecular films at air–water interface. Compression adsorption experiments, well Brewster angle microscopy, polarization...