Unsaturated diether lipids in the psychrotrophic archaeon Halorubrum lacusprofundi.
The major phospholipids of Halorubrum lacusprofundi grown at 25 degrees C were archaeol phosphatidylglycerol, archaeol phosphatidylglycerylsulphate and archaeol phosphatidylglycerylphosphate methyl ester. Glycolipids included a monoglycosyl archaeol and the sulphate ester of a diglycosyl archaeol. Cultures grown at 12 degrees C contained the same suite of phospho- and glycolipids, with the addition of a series of unsaturated analogues with up to six double bonds. The patterns of unsaturation were similar for all the phospholipid series, but a different pattern occurred in the glycolipids. The analytical techniques used in this study allow facile detection of unsaturated archaeal cell membrane lipids that are degraded by commonly used chemical derivatization procedures.
Gibson
John A E
JA
CSIRO Marine Research, GPO Box 1538, Hobart, Tasmania 7001, Australia. john.gibson@utas.edu.au
Miller
Matthew R
MR
Davies
Noel W
NW
Neill
Glen P
GP
Nichols
David S
DS
Volkman
John K
JK
D005231:Fatty Acids, Unsaturated / Q000302:isolation & purification*; D006017:Glycolipids / Q000032:analysis* / Q000302:isolation & purification; D006216:Halobacteriaceae / Q000737:chemistry* / Q000254:growth & development; D013058:Mass Spectrometry; D008563:Membrane Lipids / Q000032:analysis / Q000302:isolation & purification; D010743:Phospholipids / Q000032:analysis* / Q000302:isolation & purification; D013696:Temperature
D005231:Fatty Acids, Unsaturated; D006017:Glycolipids; D008563:Membrane Lipids; D010743:Phospholipids