Phosphatidylglucoside: Its structure, thermal behavior, and domain formation in plasma membranes

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Abstract

Phosphatidylglucoside (PtdGlc) is a unique glyco-glycerophospholipid that is found in both bacterial and mammalian cells. The discovery of PtdGlc in mammalian cells is relatively recent (Nagatsuka et al., 2001. FEBS Lett. 497, 141-147). Chemical structural analysis of the PtdGlc found in mammalian organs and cultured cells showed that PtdGlc is composed exclusively of a single pair of saturated fatty acid chains; the sn-1 chain is stearic acid (C18:0) and the sn-2 chain is arachidic acid (C20:0). PtdGlc forms distinct domains, which are different from cholesterol-based sphingolipid domains, on the outer leaflet of the plasma membrane. In this review, we summarize recent studies of PtdGlc. Special attention is paid to the thermal behavior of PtdGlc in a pure system and in mixtures with other lipid components that may relate to the formation of PtdGlc domains in biomembranes. Finally, we discuss proposed biological functions of PtdGlc based on recent experimental results. © 2011 Elsevier Ireland Ltd. All rights reserved.

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Takahashi, H., Hayakawa, T., Murate, M., Greimel, P., Nagatsuka, Y., Kobayashi, T., & Hirabayashi, Y. (2012, February). Phosphatidylglucoside: Its structure, thermal behavior, and domain formation in plasma membranes. Chemistry and Physics of Lipids. https://doi.org/10.1016/j.chemphyslip.2011.12.010

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