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. Author manuscript; available in PMC: 2009 Aug 1.
Published in final edited form as: Biophys Chem. 2008 May 1;136(2-3):74–86. doi: 10.1016/j.bpc.2008.04.008

Figure 3.

Figure 3

Figure 3

Figure 3

Figure 3

Figure 3

Effect of salt type, concentration, and seeding on polypeptide aggregation. Polypeptide aggregation as a function of salt concentration in sodium acetate for (a) PE at pH~3.6, (b) PE at pH~4.1, and (c) PEA at pH~3.6. Squares are no salt, circles are 10mM, crosses are 50mM, triangles are 100mM.(d) PE pH~4.1 as a function of seeding in 50mM sodium acetate. Crosses are seeded, triangles are unseeded.(e) PE in 50mM salt at pH~4.1. Circles are KNO3, squares are K2HPO4, diamonds are NaNO3, triangles are NaAc, and crosses are MgSO4. Solid fit lines for (a)–(d) are based on a hyperbolic tangent with the center shifted from the origin.