Lipid composition of<i>Halobacterium lacusprofundi</i>

TLDR

The study performed lipid analysis on the newly described aerobic, extremely halophilic archaeobacterium Halobacterium lacusprofundi to compare its lipid profile with existing data from related species. The lipid profile revealed MK‑8 and MK‑8(VIII‑H2) as the main respiratory lipoquinones and a suite of diether phospholipids, confirming that H. lacusprofundi is phylogenetically related to H.

Abstract

The recently described aerobic, extremely halophilic archaeobaterium, Halobacterium lacusprofundi was subjected to lipid analysis so that comparisons could be made between existing lipid data and that of the new isolate. This investigation showed that the major respiratory lipoquinones present were MK-8 and MK-8(VIII-H2), a feature found in other members of the family Halobacteriaceae. The polar lipids comprised the diether derivatives of phosphatidly glycerol, phosphatidyl glycerophosphate, phosphatidly glycerosulphate, a diglycosyl diether and its sulphate derivative. The data presented shows that Halobacterium locusprofundi is related to Hb. saccharovorum and Hb. sodomense, and is in agreement with phylogenetic data.