Table 1 Cryo-EM data collection, model refinement and validation statistics
| Â | ATP state-1 | ATP state-2 | ADP | Apo | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ISP-ED present in solution | No | No | Yes | No | ||||||||
Data collection | ||||||||||||
Microscope and camera | Titan Krios, K2 | Titan Krios, K3 | Titan Krios, K3 | Titan Krios, K2 | ||||||||
Magnification | x29,000 | x105,000 | x105,000 | x14,000 | ||||||||
Voltage (kV) | 300 | 300 | 300 | 300 | ||||||||
Frames/micrograph | 40 | 50 | 50 | 38 | ||||||||
Electron exposure (e-/Ã…2) | 50 | 54.4 | 54.4 | 40 | ||||||||
Defocus range (µm) | 1–2.5 | 0.7–2.0 | 0.7–2.0 | 1.25–2.5 | ||||||||
Pixel size (Ã…/pixel) | 0.858 | 0.415 (0.83 binned) | 0.415 (0.83 binned) | 0.858 (1.72 binned) | ||||||||
Total no. of micrographs | 6912 | 1839 | 6900 | 2314 | ||||||||
Data processing | ||||||||||||
Reconstruction software | cisTEM | CryoSparc | CryoSparc | CryoSparc | ||||||||
Extracted particles (no.) | 997,041 | 33,415 | 973,807 | 1,430,475 | ||||||||
Selected 2D particles (no.) | 337,848 | 28,638 | 72,693 | 212,961 | ||||||||
Particles for final map (no.) | 200,466 | 26,234 | 37,681 | 8,300 | 212,961 | |||||||
Starting model | De novo | De novo | De novo | De novo | De novo | |||||||
ISP-ED found in map | - | - | - | - | No | No | yes | - | ||||
Symmetry imposed | C1 | C7 | C1 | C7 | C1 | C7 | C1 | C1 | ||||
Map resolution (Ã…)a | 3.77 | 3.13 | 3.46 | 3.02 | 3.74 | 3.18 | 7.2 | 4.40 | ||||
Map resolution range (Å) | 3–8 | 2.5–4.5 | 3–7 | 2.5–6.5 | 9.5–3.5 | 6.0–3.0 |  | 9–4.0 | ||||
Map sharpening B-factor (Å2) | −90 | −90 | −59 | −96 | −62 | −97 | −293 | −180 | ||||
PHENIX refinement statistics | ||||||||||||
Initial model used | 6UKS | 6UKS | 6UKO | 6UKO | ||||||||
Model composition | ||||||||||||
   Non-hydrogen Atoms | 20,580 | 20,580 | 23,702 | 23,702 | 22,799 | 22,722 | 23,696 | 21,126 | ||||
   Residues | 2520 | 2520 | 2933 | 2933 | 2821 | 2814 | 2937 | 2618 | ||||
   Ligands | 7Mg2+, 7ATP | 7Mg2+, 7ATP | 7Mg2+, 7ATP | 7Mg2+, 7ATP | 7ADP | 7ADP | 7ADP 1FES | 0 | ||||
Overall B-factor (Ã…2) | ||||||||||||
   Protein | 211.5 | 178.3 | 135.2 | 145.1 | 163.3 | 155.1 | 377.5 | 207.0 | ||||
   Ligands | 170.8 | 136.6 | 87.5 | 100.5 | 169.8 | 158.5 | 347.1 |  | ||||
RMSD deviations | ||||||||||||
   Bond length (Å) | 0.003 | 0.002 | 0.002 | 0.004 | 0.002 | 0.002 | 0.003 | 0.004 | ||||
   Bond angle (°) | 0.608 | 0.539 | 0.438 | 0.545 | 0.586 | 0.572 | 0.741 | 0.928 | ||||
FSC model vs. map = 0.5. (Å) | 4.48 | 3.46 | 3.84 | 3.26 | 4.27 | 3.55 |  | 4.80 | ||||
Real-space correlation | ||||||||||||
   CC (mask) | 0.82 | 0.86 | 0.87 | 0.89 | 0.83 | 0.88 | 0.65 | 0.83 | ||||
   CC (volume) | 0.81 | 0.85 | 0.85 | 0.88 | 0.82 | 0.87 | 0.58 | 0.82 | ||||
   CC (peaks) | 0.67 | 0.69 | 0.73 | 0.74 | 0.65 | 0.68 | 0.39 | 0.64 | ||||
   Mean CC for ligands | 0.93 | 0.92 | 0.92 | 0.91 | 0.84 | 0.84 | 0.71 | - | ||||
Validation | ||||||||||||
   MolProbity score | 1.67 | 1.64 | 2.02 | 1.87 | 1.32 | 1.63 | 2.13 | 1.73 | ||||
   Clash score | 6.78 | 6.17 | 7.80 | 10.44 | 5.84 | 7.81 | 16.53 | 11.05 | ||||
   Rotamer outliers (%) | 0.18 | 0.23 | 2.52 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
   Ramachandran plot | ||||||||||||
     Favored (%) | 95.7 | 95.7 | 95.8 | 95.2 | 98.0 | 96.7 | 93.9 | 97.0 | ||||
     Allowed (%) | 4.0 | 4.0 | 4.2 | 4.8 | 2.0 | 3.3 | 5.9 | 3.0 | ||||
     Disallowed (%) | 0.3 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | ||||
Data deposition | ||||||||||||
   PDB | 8TI0 | 8T5U | 8TPL | 8TP1 | 8T7U | 8T14 |  | 8TBY | ||||
   EMD | 41276 | 41061 | 41476 | 41462 | 41095 | 40954 | 41609 | 41148 | ||||