Table S2.

The parameters from Zimm analysis for two vimentin samples studied as a function of concentration (first two rows) and the parameters measured at a single concentration (other rows)

Sample	$R_g,$ nm	$M_w,$ g/mol	$L_w,$ nm	$R_H,$ nm	C	ρ	$M_L,$ kg⋅mol−1⋅nm−1	$A_2,$ mol⋅L⋅g−2	$k_D,$ dm3/g	$p.d.$	c, g/L
Dilution 1	58 ± 3	6.1 ± 0.3 $\times$ ${10}^5$	115 ± 4	26 ± 5	0.34 ± 0.05	2.3 ± 0.5	5.3 ± 0.5	2.4 ± 0.6 $\times$ ${10}^{-7}$	—	1.5	0.5–0.13
Dilution 2	73 ± 2	1.1 ± 0.1 $\times {10}^6$	220 ± 10	37 ± 3	0.26 ± 0.05	2 ± 0.2	6.3 ± 0.5	5.5 ± 0.3 $\times$ ${10}^{-7}$	1.2 ± 0.3	1.5	0.2–0.046
Sample 1	25 ± 6	3.2 ± 0.2 $\times {10}^5$	60 ± 10	14 ± 1	0.17 ± 0.06	1.8 ± 0.6	5 ± 1	—	—	1.3	0.14
Sample 2	32 ± 3	4.5 ± 0.1 $\times {10}^5$	84 ± 6	15 ± 1	0.20 ± 0.03	2.2 ± 0.3	6 ± 1	—	—	1.5	0.12
Sample 3	28 ± 5	3.9 ± 0.4 $\times {10}^5$	70 ± 14	13 ± 1	0.22 ± 0.05	2.1 ± 0.6	6 ± 1	—	—	1.3	0.12
Sample 4	27 ± 2	3.5 ± 0.3 $\times {10}^5$	66 ± 6	12.6 ± 0.5	0.2 ± 0.04	2.1 ± 0.3	5 ± 1	—	—	1.4	0.18
Sample 5	100 ± 10	1.9 ± 0.2 $\times {10}^6$	220 ± 20	52 ± 5	0.2 ± 0.05	2.0 ± 0.4	8.6 ± 0.1	—	—	1.8	0.18
Sample 6	58 ± 4	1.0 ± 0.1 $\times {10}^6$	120 ± 10	38 ± 3	0.32 ± 0.09	1.5 ± 0.2	6.3 ± 0.5	—	—	1.8	0.2
Sample 7	55 ± 4	1.2 ± 0.1 $\times {10}^6$	120 ± 10	36 ± 3	0.32 ± 0.07	1.5 ± 0.2	6.3 ± 0.5	—	—	1.8	0.2
Sample 8	56 ± 4	1.2 ± 0.1 $\times {10}^6$	120 ± 10	36 ± 3	0.32 ± 0.05	1.5 ± 0.2	6.3 ± 0.5	—	—	1.8	0.2

In column 3, $L_w$ is calculated via Eq. S4 and the mass per unit length in column 7 is set to $M_L=M_w/L_w.$