磷脂酰甘油(PG)是食物和生物组织中的主要磷脂之一。PG的结构中有两个酯化后连接甘油的酰基链,而甘油与具有磷酸酯并带有负电荷的头基结构(headgroup structure)键合。PG在细菌膜中含量很高,在哺乳动物膜中含量较低。它在肺表面活性剂中含量丰富。PG由胞苷磷酸-二酰基甘油(CDP-DAG)合成。
蛋PG可用作连续蛋白质错误折叠循环扩增(serial protein misfolding cyclic amplification,sPMCA)反应中的阴离子磷脂底物。它也适用于制备单层大囊泡(large unilamellar vesicle,LUV)并被用作液相色谱-质谱分析(LC-MS)的标准品。
Phosphatidylglycerol (PG) is one of the major phospholipids in food and biological tissues. PG, structurally has two acyl chains esterified to a glycerol, which in turn is bonded to a headgroup structure that has phosphate and carries negative charge. PG is abundant in bacterial membranes and present in lower amounts in mammalian membranes. It is abundant in lung surfactant. PG is synthesized from cytidine phosphate-diacylglycerol (CDP-DAG).
Egg PG has been used as anionic phospholipid substrate in serial protein misfolding cyclic amplification (sPMCA) reaction. It is also suitable for use in the preparation of large unilamellar vesicles (LUVs) and as a standard for liquid chromatography-mass spectrometric analysis (LC-MS).