TABLE 1.

SAXS structural parameters

Proteins	Rga	Rgb	I(0)a	I(0)b	Dmaxc	Vpd	Mr from I(0)e	Mr from Vpf	Mrg
	Å	Å	a.u.	a.u.	Å	Å3	kDa	kDa	kDa
E,E-SOD1(57/146)S-Sh	21.5 ± 0.2	21.2 ± 0.1	4.67 ± 0.03	4.63 ± 0.01	68	5.85 × 104	38.7	35.4	16.2
E,E-SOD1noCysh	18.4 ± 0.2	17.7 ± 0.1	2.31 ± 0.02	2.26 ± 0.01	58	3.00 × 104	19.1	18.2	16.2
BSAi	27.6 ± 0.3	ND. j)	8.01 ± 0.05	NDj	NDj	NDj	NDj	NDj	66.4

^a Guinier analysis using the Q range from 0.02588 to Q_max < 1.3/R_g.

^b Estimates in real space upon P(r) determination.

^c Maximum dimension estimated by using GNOM package.

^d Porod volume.

^e M_r, molecular mass calculated by using the I(0) value for BSA as the standard.

^f M_r calculated according to an empirical relationship (M_r = V_p/1.65) (53).

^g Theoretical M_r calculated according to amino acid sequences.

^h Extrapolated to infinite dilution.

ⁱ At finite concentration of 3.06 mg/ml (54).

^j Not determined.