A sulfate ester of phosphatidyl glycerol (diether analogue) from Halobacterium cutirubrum

Halophilic Microorganisms and their Environments

“…The presence of the methyl ester group in the Me-PGP structure was recognized only relatively recently (Kates, 1996;Kates et al, 1993), although its presence was already suggested from fast bombardment mass spectrometry data published in 1989 (Fredrickson et al, 1989a;see also Tsujimoto et al, 1989). Phosphatidylglycerosulfate (PGS, Figure 3.16 c) is present in many neutrophilic species (Hancock and Kates, 1973). Its absence in certain genera (Haloferax, Natrialba, Halobaculum, Halococcus, Halogeometricum) is a useful diagnostic feature in the classification and identification of the Halobacteriaceae.…”

Sulfate ester formation and hydrolysis: a potentially important yet often ignored aspect of the sulfur cycle of aerobic soils.

“…We may therefore be underestimating the number and variety of organisms contributing to the production of these esters. The additional occurrence of compounds possessing the N-O-S03linkage (sulfated thioglycosides) in most cruciferous plants (142,264) and of bacterial lipids bearing sulfate ester linkages (95,96,102,135,136,147) stiggests that nonmammalian sources of ester sulfate may be prevalent in soil. The actual magnitude of this contribution will not be appreciated until investigations are conducted to assess the ability of various microorganisms to synthesize these esters.…”

Novel sulfated phosphoglycolipids from Natronomonas moolapensis

“…Apparently, their closest relatives appear to be the frequently found phosphatidylglycerol phosphate-methylester (PGP-Me), phosphatidylglycerol sulfate (PGS), and an unusual cyclic phosphatidylglycerol phosphate isolated from Natronococcus occultus where phosphate links C1 and C2 of the terminal glycerol (Oren, 2006;Hancock and Kates, 1973;Lanzotti et al, 1989). Also, a cardiolipin analog from methanemetabolizing Archaea, monoglycosylated bisphosphatidylglycerol, The unrooted tree was derived by maximum-likelihood using the PhyML 3.0 web version (for details see Suppl.…”