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. 2020 Oct 6;28(10):1087–1100.e3. doi: 10.1016/j.str.2020.08.004

Table 1.

Model Refinement and Validation Statisticsa

Amikacin-Ribosome 50S Amikacin-Ribosome 30S Body Amikacin-Ribosome 30S Head Tigecycline-Ribosome 50S Tigecycline-Ribosome 30S Body Tigecycline-Ribosome 30S Head
Map resolution (Å) (FSC = 0.143) 2.7 2.9 3.0 2.5 2.7 3.0
Map sharpening B factor (Å2) −47.3 −55.7 −51.6 −82.5 −99.3 −131.4

Model Composition

Non-hydrogen atoms 83,514 33,322 16,864 83,855 33,279 16,906
Protein residues 3,069 1,496 852 3,112 1,496 852
Nucleic acid residues 2,800 1,040 477 2,800 1,040 477
Metal ions 161 59 24 163 56 24
Ligand none amikacin none tigecycline ×3 none tigecycline

General Validation

CCb (model to map fit) 0.86 0.83 0.86 0.86 0.84 0.70
Clashscore 4.84 7.09 5.25 5.86 9.42 15.11

Root-mean-square Deviations

Bond lengths (Å) 0.007 0.012 0.007 0.008 0.010 0.007
Bond angles (°) 0.775 0.974 0.702 0.730 0.794 0.853

Protein Geometry Validation

Rotamer outliers (%) 7.08 11.02 7.15 5.70 8.22 11.24
Ramachandran outliers (%) 0.03 0.20 0.00 0.07 0.00 0.24
Ramachandran favored (%) 94.46 90.54 92.58 95.42 91.90 91.03

RNA Geometry Validationc

Sugar pucker outliers (%) 0.64 0.38 0.21 0.57 0.38 0.42
Backbone conformation outliers (%) 17.14 20.48 17.19 15.89 19.71 22.85
a

Obtained from Phenix refinement log unless otherwise stated.

b

CC, correlation coefficient.

c

Obtained from MolProbity Web server.