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. 2014 Feb 18;106(4):843–854. doi: 10.1016/j.bpj.2013.12.048

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© 2014 by the Biophysical Society.

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X31 fusion results at various pH conditions for SLB A at ρ_HA,200. (a) Simulations are able to fit experimental data by adjusting only k_bend while keeping w = 3 and q = 1. (b, right axis and circles) The mean k_bend values for pH 3.0, 3.5, 4.0, and 4.5 are 0.2, 0.05, 0.018, and 0.01 s⁻¹, respectively, with standard deviation shown in error bars. (b, left axis and triangles) The mean R18 diffusivity values for pH 3.0, 3.5, 4.0, and 4.5 are 0.82, 0.66, 0.55, and 0.51 μm²/s, respectively, with standard deviation shown in error bars. Mobile fractions of R18 were close to 1 for all cases. Both R18 diffusivity and k_bend decrease with increasing pH over this range.