Characterization of caldarchaetidylglycerol analogs, dialkyl-type and trialkyl-type, from Thermoplasma acidophilum |
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| Authors: | Ikuko Uda Akihiko Sugai Yuko H Itoh Toshihiro Itoh |
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| Affiliation: | (1) Department of Bioengineering, Faculty of Engineering, Soka University, 192-8577 Tokyo, Japan;(2) Division of Chemistry, Center for Natural Science, Kitasato University, 1-15-1 Kitasato, Sagamihara, 228-8555 Kanagawa, Japan |
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| Abstract: | The structures of three kinds of phospholipids (PL-X, PL-Y, and PL-T) isolated from Thermoplasma acid-ophilum have been characterized. The core lipid of PL-Y was caldarchaeol, and that of PL-X was archaeol. The composition of the hydrocarbon
chains of the PL-T core lipid was C20 phytane and C40 isoprenoid in a molar ratio of 2 to 1. The major molecular species of the C40 isoprenoid was acyclic without the cyclopentane ring. These three kinds of intact phospholipids commonly had glycerophosphate
residues as polar head groups. The structure of PL-T was characterized as trialkyl-type caldarchaetidylglycerol, PL-Y as caldarchaetidylglycerol,
and PL-X as archaetidylglycerol. |
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