Table 2.
N peptide | [θ] at 222 nm (×103) | % Helicity | Tm (°C) |
---|---|---|---|
N36 | −9.9 | 29.9 | NAb |
N36-Q64A | −7.3 | 22.2 | NA |
N36-Q64L | −8.5 | 25.9 | NA |
N36 + C34 | −29.1 | 88.0 | 66 |
N36-Q64A + C34 | −27.8 | 84.0 | 57 |
N36-Q64L + C34 | −18.5 | 56.0 | 56 |
T21 | −2.1 | 6.3 | NA |
T21-Q64A | −3.0 | 9.1 | NA |
T21-Q64L | −3.3 | 10.0 | NA |
T21 + CP32 M | −28.6 | 86.7 | 88.2 |
T21-Q64A + CP32 M | −23.3 | 70.6 | 82.0 |
T21-Q64L + CP32 M | −11.7 | 35.5 | 71.2 |
All of the experiments were performed with 10 μM peptide solutions in phosphate-buffered saline (pH 7.0). The midpoint of thermal denaturation (Tm) was calculated from the thermal dependence of the CD signal at 222 nm.
NA, not applicable.