The lipidomics update provides an overview of developments in lipid research. Each month we offer a fresh collection of research, news and events for the specialist and the interested non-specialist alike.
LIPID MAPS mass spectrometry combinatorial expansion package - The LIPID MAPS mass spectrometry combinatorial expansion package contains a set of PHP scripts to generate datasets contining species name, m/z and molecular formula for some of the main lipid categories: Glycerophospholipids (GP); Glycerolipids (GP); Cardiolipins (GP); Sphingolipids (SP). Generate a tabular output of lipid species containing the species abbreviation, nominal mass, exact mass (or m/z if charged), molecular formula, ion type (if specified) by a combinatorial expansion of a user-specified range of chain lengths and chain-length-to-double-bond restrictions. The output is printed to standard output (screen) but may conveniently be saved to a tab-delimited file.
Sulfoquinovosyl diacylglycerols, (SQDG), are a class of sulfur-containing but phosphorus-free lipids (sulfolipids) found in many photosynthetic organisms. SQDG has been found in all photosynthetic plants, algae, cyanobacteria, purple sulfur and non-sulfur bacteria and is localised in the thylakoid membranes, where it appears to be important for membrane structure and function and for optimal activity of photosynthetic protein complexes. It has been estimated to be one of the most abundant organosulfur species in the biosphere and thus plays a major role in the global biogeochemical sulfur cycle. A structure examples is SQDG(16:0/16:0) (1,2-dihexadecanoyl-3-(6'-sulfo-a-D-quinovosyl)-sn-glycerol).
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