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. Author manuscript; available in PMC: 2013 Jun 5.
Published in final edited form as: Biochim Biophys Acta. 2012 May 11;1818(9):2135–2148. doi: 10.1016/j.bbamem.2012.05.007

Fig. 1.

Fig. 1

PG lipid volumes obtained by vibrating tube densitometry and neutral buoyancy as described in the Materials and methods. DOPC data are shown for comparison. Uncertainties of 0.3% in the measured volumes are estimated based on the average of two samples with different lipid concentrations. For DMPG, DPPG, and DSPG bilayers, a volume jump occurs in the vicinity of the main gel-to-liquid crystalline transition: 23 °C for DMPG, 41 °C for DPPG, and 54 °C for DSPG. Lines are to guide the eye only, and do not indicate the true widths of the transitions, which are much narrower.