Table 1. Size parameters determined from SAXS data.
| Sample | Guinier R g (Å)a | GNOM Rg (Å)a | D max (Å)b | MW – Sequence (kDa)c | MW – SAXS Standard (kDa)d | CRYSOL R g (Å) | CRYSOL D max (Å) |
| CYT-18 NTDs | 35.6±0.2 | 36.7±0.1 | 123 | 89.6 | 84.4±4.7 | 35.2 | 125 |
| CYT-18 CTD | 17.7±0.4 | 18.1±0.1 | 62 | 14.8 | 13.3±0.7 | 17.0 | 55.9 |
| CYT-18* | 46.9±0.8 | 47.7±0.1 | 170 | 122 | 119±6 | — | — |
| CYT18 NTDs+Twort RNA | 39.2±0.1 | 39.3±0.1 | 137 | 161 | — | 39.1 | 134 |
| CYT-18*+Twort RNA | 41.9±0.1 | 41.8±0.1 | 146 | 194 | — | — | — |
a
Radius of gyration calculated from the SAXS data by using the Guinier approximation or AUTOGNOM. Error estimates are the standard error of the linear regression and standard deviation, respectively.
b
D max values estimated by using the indirect transform program AUTOGNOM.
c
Molecular weight calculated from protein and RNA sequence.
d
Molecular weight calculated from SAXS data by comparison with the protein standard bovine serum albumin. Error estimates are for propagation of standard error calculated for I(0)/c from linear regression, where I(0) is the forward scattering intensity and c is the concentration of protein in g/l.