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. Author manuscript; available in PMC: 2010 Jul 18.
Published in final edited form as: J Am Chem Soc. 2008 Jun 24;130(28):9025–9030. doi: 10.1021/ja800948c

Figure 3.

Figure 3

Effects of various counterions.

(A) Area per molecule at π = 30mN/m of L-α PIP2 on HEPES-buffered subphase with 250 mM salt; Mean ± SE, n=5.

(B) π-Area isotherms of L-α PIP2 HEPES-buffered subphase, pH 7.4, 30°C (solid line) and same conditions plus 250 mM CaCl2 (dashed line); (inset) quantification of the effects of 250 mM CaCl2 and MgCl2; mean ± SE, n=4.