Fig. 2.

(Top) α-Crystallin solution low shear rate relative viscosity ${\eta }_r={\eta }_0/{\eta }_s$ vs. α-crystallin volume fraction ϕ, using $v=1.7\hspace{0.17em}\text{mL}/\text{g}$ consistent with SAXS and SLS (see text). (Middle) Normalized diffusivities $\left(D/D_0\right)\left(\varphi \right)$, from second-order cumulant fits to the DLS-measured ISF $f\left(q,t\right)$. $D_0=2.2\times {10}^{-11}$ m²/s is the free-particle diffusion coefficient as ϕ approaches 0. Dashed line: the HS theory $D/D_0=1+1.45\varphi$. (Bottom) DLS $f\left(q,t\right)$ vs. delay time t; q = 0.023 nm⁻¹. Progressively slower $f\left(q,t\right)$ decays with increasing ϕ are qualitatively similar to those from MD simulations (Fig. S4, Top). Slow relaxation times ${\tau }_q$ for which $f\left(q,\tau \right)=0.25$ (dashed line) are shown in Fig. 5 (Left).