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The pleiotropic, bioactive lipid lysophosphatidic acid [(LPA), 1-acyl-sn-glycerol-3-phosphate] exerts critical regulatory actions in physiology and pathophysiology in many systems. It is present in normal bodily fluids, and is elevated in pathology (1). In vivo, “LPA” exists as distinct molecular species, each having a single fatty acid of varying chain length and degree of unsaturation covalently...
Transitions in DNA structure have the capacity to regulate genes, but have been poorly characterised in eukaryotes due to a lack of appropriate techniques. One important example is DNA supercoiling, which can directly regulate transcription initiation, elongation and coordinated expression of neighbouring genes. DNA supercoiling is the over- or under-winding of the DNA double helix, which occurs as...
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