Table 1 Cryo-EM data collection, model refinement and validation statistics

From: Conformations of Bcs1L undergoing ATP hydrolysis suggest a concerted translocation mechanism for folded iron-sulfur protein substrate

 

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 (Ã…)

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 (Ã…2)

−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

  1. amap resolution was based on FSC threshold of 0.143.