Table 3.
X-ray crystallographic statistics
| Ca2+-loaded apo-aequorin | Ca2+-loaded apo-obelin | ||
| Data collection statistics | |||
| Wavelength (Å) | 2.2909 | 0.97 | 0.97 |
| Space group | P43P12 | P43212 | P41212 |
| Resolution overall/outer (Å) | 50–2.5/2.59–2.5 | 50–1.7/1.76–1.7 | 50–2.2/2.28–2.2 |
| Completeness overall/outer (%)a | 99.5/–95.2 | 98.8/91.7 | 99.8/99.4 |
| Rmerge overall/outer (%) | 5.3/11.2 | 3.8/27.0 | 7.4/25.1 |
| I/σ1 overall/outer | 40.5/13.7 | 45.9/4.7 | 20.4/4.7 |
| Refinement statistics | |||
| Resolution range (Å) | 50.0–1.7 | 50.0–2.2 | |
| Rwork | 0.21 | 0.20 | |
| Rfree | 0.23 | 0.24 | |
| Free R-value test set (%) | 5 | 5 | |
| Mean B-factor (Å2) | 30.4 | 27.2 | |
| RMSDs from ideality | |||
| Bond lengths (Å) | 0.019 | 0.015 | |
| Bond angles (°) | 1.6 | 1.3 | |
aRmerge = ∑hkl∑i|Ihkl,i - 〈Ihkl〉|/∑hkl,i|Ihkl,i|, where Ihkl,i is the intensity of an individual measurement of the reflection with the Miller indices h, k, and l, and 〈Ihkl〉 is the mean intensity of that reflection.