Table 1. Biophysical parameters of the three PsTRXs.
| Biophysical parameter | PsTRXh1 | PsTRXh2 | PsTRXf |
| Molecular weight (kDa) | 13.1 | 13.0 | 12.1 |
| Theoretical R S (Å) a | 19±4 | 19±4 | 18±4 |
| Theoretical r0 (Å) b | 15.6 | 15.5 | 15.2 |
| Number of residues | 120 | 118 | 109 |
| Number of fluorescent residues (W, Y) | 3, 0 | 3, 0 | 2, 2 |
| Theoretical pIc | 5.67 | 4.62 | 7.82 |
a
Determined according to the equation described by Dobson and co-workers [49].
b
Determined from 
[48].
c
Determined from their sequences by the ExpasY web-tools: http://www.expasy.ch/tools/protparam.