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Distance between ligand Pα and Lys 82 Nζ reactant atoms and the angle between this vector and the bond between Pα and leaving group
| Structure | Distance, Å | Angle, ° |
|---|---|---|
| GpppG complex | 3.1 | 166 |
| Closed GTP complex | 3.2 | 161 |
| Open GTP complex | 4.0 | 70 |
| Guanylylated intermediate | 1.6 | NA |
An angle of 180° would be most suitable for in-line attack by the nucleophilic lysine on the phosphate.
