Table S2.
Crystallographic refinement
| PDB ID code | 5EJX | 5EJT |
| Total images collected | 371 | 360 |
| Images indexed | 253 | 360 |
| Reflections used | 600,891 | 722,513 |
| Unique reflections | 65,592 | 60,803 |
| Completeness | 97.8% | 100 |
| I/σ | 3.33 | 14.5 |
| CC1/2 | 61.7% | 30.0 |
| R/Rfree | 23.4/26.1 | 15.3/17.7 or 14.4/17.3 |
| Space group | 19 | 19 |
| a, b, c; Å | 107.47, 74.99, 51.25 | 107.32, 75.19, 51.15 |
| α, β, γ; ° | 90, 90, 90 | 90, 90, 90 |
| Resolution range, Å | 18–1.5 | 39–1.55 |
CC1/2, percentage of correlation between intensities from random half data sets; I/σ, mean intensity/Σ(I) of unique reflections after merging symmetry related observations and Σ(I) = standard deviation of reflection intensity I estimated from sample statistics.