Table 1.
Protein | Sequence | #aa | hyd | Tc(°C)a |
---|---|---|---|---|
20’ | (VPGVGG)5 | 30 | 0.9 | ND |
24’ | (APGVGV)7 | 42 | 1.3 | ND |
2123 | EAQA5KA2KYGVGTPA5KA3KAAQFG | 33 | 0.2 | NC |
X’ | DA5KA2KF | 11 | 0.4 | NC |
1 | 20’−2123–24’−2123–24’ | 182 | 0.8 | 52 |
2 | 20’−20’−2123–24’−2123–24’−24’ | 254 | 0.9 | 32 |
3 | 20’-X’−24’-X’−24’ | 138 | 1.0 | 44 |
4 | 24’-X’−24’-X’−24’-X’−24’ | 203 | 1.1 | 36 |
Tc values were determined spectrophotometrically by the onset of turbidity at 440 nm under standard conditions: 25 μM protein in pH 7, 50 mM Tris with 1.5 M NaCl and 1 mM CaCl2. For easy detection, constructs 1–4 contain tryptophan residues at the N- and C- termini.