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Identification of acylated glycoglycerolipids from a cyanobacterium, Synechocystis sp., by tandem mass spectrometry
Author(s) -
Kim Young Hwan,
Choi JongSoon,
Hong Jongki,
Yoo Jong Shin,
Kim Myung Soo
Publication year - 1999
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/s11745-999-0432-2
Subject(s) - monoacylglycerol lipase , chemistry , tandem mass spectrometry , fast atom bombardment , moiety , mass spectrometry , chromatography , glycosidic bond , stereochemistry , organic chemistry , biochemistry , endocannabinoid system , enzyme , receptor
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.