Identification of acylated glycoglycerolipids from a cyanobacterium, Synechocystis sp., by tandem mass spectrometry |
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Authors: | Young Hwan Kim Jong-Soon Choi Jongki Hong Jong Shin Yoo Myung Soo Kim |
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Affiliation: | (1) Biomolecular Analysis Teams, Korea Basic Science Institute, 305-600 Taejon, Korea;(2) Department of Chemistry, Seoul National University, 151-742 Seoul, Korea;(3) Mass Spectrometry Analysis Team, Korea Basic Science Institute, P.O. Box 41, 305-600 Taejon, Korea |
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Abstract: | Acylated glycoglycerolipids were identified in the total lipid extract from cyanobacerium Synechocystis sp. PCC 6803. These compounds have a palmitoyl group esterified to the hydroxyl group at the C-6 position of the terminal
glycosyl moiety of digalactosyl monoacylglycerol and digalactosyl diacylglycerol. Their structural elucidation was accomplished
by tandem mass spectrometry coupled with fast atom bombardment ionization. Acylated digalactosyl monoacylglycerol has a structure
of 1-hydroxy-2-palmitoyl-3-O-(6-O-palmitoyl)-α-d-galactopyranosyl-(1→6)-β-d-galactopyranosyl]-sn-glycerol. This compound has not been reported previously. |
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