Crossing the lipid divide.
2021
Archaeal membrane lipids are structurally different from bacterial and eukaryotic membrane lipids, but little is known about the enzymes involved in their synthesis. In a recent study, Exterkate et al. identified and characterized a cardiolipin synthase from the archaeon Methanospirillum hungatei. This enzyme can synthesize archaeal, bacterial, and mixed archaeal/bacterial cardiolipin species from a wide variety of substrates, some of which are not even naturally occurring. This discovery could revolutionize synthetic lipid biology, being used to construct a variety of lipids with nonnatural head groups and mixed archaeal/bacterial hydrophobic chains.
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