Table 1. Light-dependent G-protein activation of the wild-type and GR chimeras.
Sample | Catalytic activitya (μmol/min/mol pigment) |
Third loop inserted chimeras | |
GR wild-type | 10±3 |
GR wild-type + E132Q | 5±3 |
GR/Rh 223-252 | 63±5 |
GR/Rh 223-253 | 85±8 |
GR/Rh 225-251 | 128±10 |
GR/Rh 225-252 | 138±8 |
GR/Rh 226-244 | 107±5 |
GR/Rh 227-244 | 115±10 |
GR/Rh 228-244 | 97±10 |
GR/Rh 229-244 | 83±5 |
GR/Rh 226-247 | 100±3 |
GR/Rh 227-247 | 115 ±3 |
GR/Rh 228-247 | 82±7 |
GR/Rh 229-247 | 93±7 |
Second loop inserted chimeras | |
GR/Rh 132-152 | 10±5 |
GR/Rh 133-152 | 9±5 |
GR/Rh 134-152 | 5±5 |
Double loop inserted chimeras | |
GR/Rh 133-152 + 228-244 | 480±40 |
GR/Rh 133-152 + 228-244 + E132Q | 990±120 |
GR/Rh 133-152 + 225-252 + E132Q | 1070±130 |