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Volume 62, no. 1, p. 14, column 1, line 20: "250 (mu)g each of yeast extract, peptone, and soluble starch ml(sup-1)" should read "250 (mu)g each of yeast extract, peptone, and soluble starch liter(sup-1)." [This corrects the article on p. 13 in vol. 62.].
Mixed life cycle stages of rat-derived Pneumocystis carinii were isolated from host lungs and their sterols were compared with those present in lungs from normal and immunosuppressed uninfected rats. Gas-liquid chromatography consistently detected, resolved, and quantified 9, 10, and 20 sterol components in the total nonsaponifiable neutral lipid fraction(More)
Members of the bacterial genus Bdellovibrio include strains that are free-living, whereas others are known to invade and parasitize larger Gram-negative bacteria. The bacterium can synthesize several sphingophospholipid compounds including those with phosphoryl bonds as well as phosphonyl bonds. In the present study, the dominant sphingophosphonolipid(More)
Paremecium tetraurelia contains high concentrations of six ethanolamine sphingolipids in the cell surface membrane surrounding somatic cilia. Three have phosphoryl groups and the other three have phosphonyl groups, and each contains either dihydrosphingosine, sphingosine, or phytosphingosine. In the present study, free, phosphorylated, and three major(More)
Six ethanolamine sphingophospholipids from axenically cultured Paramecium tetraurelia were isolated from cells and purified ciliary fractions, and were characterized. The sphingolipids comprised 10.7% of whole cell and 32.5% of ciliary ethanolamine phospholipid fractions purified by ion exchange column chromatography. The individual sphingolipids were(More)
Pneumocystis carinii carinii and rat lung phospholipids contained 3-6% 1-alkyl-2-acyl glycerols composed of the glyceryl ether species, 1-O-octadecyl glycerol (batyl alcohol), 1-O-octadec-9-enyl glycerol (selachyl alcohol), 1-O-hexadecyl glycerol (chimyl alcohol), and 1-O-hexadec-9-enyl glycerol. Of the major phospholipid classes, phosphatidylinositol (PI)(More)
Inositol lipids account for 15% of the total cellular phospholipids of Leishmania donovani promastigotes. Four major inositol lipids were identified and characterized: phosphatidylinositol (PI), phosphatidylinositol phosphate (PI-P), phosphatidylinositol diphosphate (PI-P2), and an inositol sphingophospholipid (InSL). Diacyl and alkyl acyl PI were(More)
Various Brassica species accumulate Se into the thousands of ppm. This suggests some of them as candidates for Se phytoremediation. Brassica juncea (Indian mustard) was used to accumulate selenium by growing with sodium selenite as the selenium source under hydroponic conditions resulting in Se accumulation of up to hundreds of ppm in various parts of the(More)
The green alga Selenastrum capricornutum was incubated with benzo(a)-pyrene under an atmosphere of 20% (18)O2: 80% N2. The cis-11,12-dihydro-11,12-dihydroxybenzo(a)pyrene, cis-7,8-dihydro-7,8-dihydroxybenzo(a)pyrene and cis-4,5-dihydro-4,5-dihydroxybenzo(a)pyrene, were isolated by HPLC and analyzed by mass spectrometry. The metabolites produced molecular(More)
The major ester-linked fatty acids of the total lipids extracted from Pneumocystis carinii isolated from the lungs of corticosteroid-treated rats were 16:0, 18:0, 18:1, 18:2 and 20:4. Others detected included 14:0, 16:1 and 22:4. The major sphingolipid fatty acids were 16:0, 18:0, 22:0, 24:0 and 24:1; others included 14:0, 18:1, 20:0, 23:0, 24:2 and 26:0.(More)