TABLE 2.

Solution dimensions from small angle x-ray scattering

	RgG	RgP	rmax
	Å	Å	Å
Wild type preQ1 + Mg2+	16.6 ± 0.02	16.5 ± 0.01	51 ± 5
Wild type preQ0 + Mg2+	16.9 ± 0.02	16.9 ± 0.01	57 ± 6
Wild type Mg2+	17.0 ± 0.02	17.0 ± 0.01	57 ± 6
F. nucleatum preQ1 + Mg2+	19.3 ± 0.03	19.3 ± 0.01	64 ± 6
F. nucleatum Mg2+	31.0 ± 0.07	30.9 ± 0.02	107 ± 11
Crystal coordinates, preQ0/Q1		16.9a	50b
Crystal coordinates, free state		17.0a	52b

^a Calculation considers the solvent shell from CRYSOL (46).

^b From MOLEMAN (47), including 1.6 Å for a monolayer shell of water on the molecular surface (65).