Table 1 Cryo-EM and model statistics.

From: Formation of thyroid hormone revealed by a cryo-EM structure of native bovine thyroglobulin

Data collection and processing

Dimer

ASU

Microscope

FEI Krios

FEI Krios

Mode

EF-TEM Gatan

EF-TEM Gatan

Energy filter

Gatan GIF Quantum

Gatan GIF Quantum

Detector

K3

K3

Magnification

105 kX

105 kX

Voltage (kV)

300

300

Cumulative dose (e.Å−2)

54

54

Defocus range (μm)

0.5–3.5

0.5–3.5

Pixel size (Å)

0.825

0.825

Refinement symmetry

Combined C1 + C2

C1

Particles

242813

376342

Particles for C2-expanded

485626

 

Map resolution (Å)

3.28

3.32

Map resolution range (Å)

2.71–10

2.79–8.75

Sharpening B factor (Å2)

−125.0

−92.0

Sharpening B factor (Å2) for C2-expanded

−101.6

 

REFINEMENT

  

PDB ID

7QTQ

 

EMDB

EMD-14145

 

Model composition:

 Non-hydrogen atoms

55253

 

 Protein residues

3577

 

RMS deviations:

  

 Bond lengths (Å)

0.007

 

 Bond angles (°)

0.736

 

Validation:

  

 Molprobity score (percentile)

2.08

 

 Clashscore

9.85

 

 Poor rotamers (%)

0

 

Ramachandran plot:

  

 Favored (%)

89.29

 

 Allowed (%)

10.71

 

 Disallowed (%)

0