Tetraether membrane lipids of Candidatus "Aciduliprofundum boonei", a cultivated obligate thermoacidophilic euryarchaeote from deep-sea hydrothermal vents.
The lipid composition of Candidatus "Aciduliprofundum boonei", the only cultivated representative of archaea falling in the DHVE2 phylogenetic cluster, a group of microorganisms ubiquitously occurring at hydrothermal vents, was studied. The predominant core membrane lipids in this thermophilic euryarchaeote were found to be composed of glycerol dibiphytanyl glycerol tetraethers (GDGTs) containing 0-4 cyclopentyl moieties. In addition, GDGTs with an additional covalent bond between the isoprenoid hydrocarbon chains, so-called H-shaped GDGTs, were present. The latter core lipids have been rarely reported previously. Intact polar lipid analysis revealed that they predominantly consist of GDGTs with a phospho-glycerol headgroup.
Schouten
Stefan
S
Department of Marine Biogeochemistry and Toxicology, Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands. schouten@nioz.nl
Baas
Marianne
M
Hopmans
Ellen C
EC
Reysenbach
Anna-Louise
AL
Damsté
Jaap S Sinninghe
JS
D001105:Archaea / Q000737:chemistry / Q000378:metabolism*; D004987:Ethers / Q000032:analysis / Q000378:metabolism; D006358:Hot Temperature; D008563:Membrane Lipids / Q000032:analysis / Q000378:metabolism*; D009792:Oceans and Seas; D014871:Water Microbiology
D004987:Ethers; D008563:Membrane Lipids