Table 1. Comparison of the AV-BcO association rate constants (kon) obtained by fluorescence change, , and corrected fluorescence anisotropy, .
kon AV-BcO | × 10−6 M-1s-1 | × 10−6 M-1s-1 | ||||
---|---|---|---|---|---|---|
Temp. | 260 nM | 520 nM | 1040 nM | 260 nM | 520 nM | 1040 nM |
25°C | 9.5 ± 0.1 | 9.5 ± 0.3 | 9.7 ± 0.3 | 9.5 ± 0.1 | 9.5 ± 0.1 | 9.4 ± 0.2 |
20°C | 5.7 ± 0.1 | 5.9 ± 0.3 | 6.0 ± 0.1 | 5.9 ± 0.1 | 5.8 ± 0.1 | 6.1 ± 0.1 |
15°C | 4.1 ± 0.1 | 4.0 ± 0.1 | 3.9 ± 0.2 | 4.0 ± 0.1 | 3.8 ± 0.1 | 4.0 ± 0.2 |
10°C | 2.4 ± 0.1 | 2.6 ± 0.2 | 2.5 ± 0.2 | 2.7 ± 0.1 | 2.7 ± 0.1 | 2.7 ± 0.1 |
The association reactions were acquired with BcO (20 nM) binding to AV at several temperatures, protein concentrations and pH 8.The and signals were equivalent as they tracked in the errors the association process of dye-labeled B7 binding to the proteins under pseudo-first order conditions.