Journal of Lipid Research (Jul 2004)

Bacterial phospholipid molecular species analysis by ion-pair reversed-phase HPLC/ESI/MS

  • Nicolas Mazzella,
  • Josiane Molinet,
  • Agung Dhamar Syakti,
  • Alain Dodi,
  • Pierre Doumenq,
  • Jacques Artaud,
  • Jean-Claude Bertrand

Journal volume & issue
Vol. 45, no. 7
pp. 1355 – 1363

Abstract

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This work set out to optimize the detection and separation of several phospholipid molecular species on a reversed-phase column with the use of an electrospray ionization/mass spectrometry-compatible counter-ion. An application of this technique concerned a qualitative and quantitative analysis of bacterial membrane phospholipids extracted from Corynebacterium species strain 8. The phospholipid classes of strain 8 were identified as phosphatidylglycerol, phosphatidylinositol, diphosphatidylglycerol, and a peculiar lipid compound, acyl phosphatidylglycerol.Most of the molecular species structures were elucidated, and regarding phosphatidylglycerol, the fatty acid positions were clearly determined with the calculation of the sn-2/sn-1 intensity ratio of the fatty acyl chain fragments.

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