Table 1.

Physical invariants measured from the SAXS spectra of the native and the phosphorylated RD

	R g (nm)	I(0)	MM (kDa)	D max (nm)	R *g (nm)	V (nm3)
Native	3.25 ± 0.18	4.38 ± 0.03	23.96	11.4	3.46 ± 0.03	71.2 ± 0.7
Phosphorylated	2.92 ± 0.04	4.45 ± 0.02	24.34	10.2	3.09 ± 0.02	71.99 ± 1.7

R _g and I(0) are the gyration radius and the extrapolation of the intensity to s = 0, respectively, calculated from the Guinier plot. MM is the molecular mass estimated from I(0). D _max and R ^*_g are the maximum size of the particle and the gyration radius calculated from the distance distribution function. V is the Porod volume of the particle