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Table 1 Chirality errors and cis peptide bonds in the Protein Data Bank

From: Stereochemical errors and their implications for molecular dynamics simulations

Method1

Chirality errors

Cis peptide bonds

 

Total 2

Residues per error 3

Structures analyzed 4

Structures with errors

Total 2

Residues per cis bond 3

Structures analyzed 4

Structures with cis bonds

All

4047

9746

67942

648 (1%)

104455

368

65899

28576 (43%)

Electron microscopy

1273

529

201

40 (20%)

2316

262

192

93 (48%)

Solution NMR

280

2684

8444

105 (1%)

1289

565

7574

818 (11%)

X-ray diffraction

2494

15230

59147

503 (1%)

100776

368

57987

27646 (48%)

  1. 1 As given by EXPDTA record on each PDB file. Entries with more than one method were classified based on the first method listed. Only methods with at least 100 solved structures are shown in the table.
  2. 2 Total number of chirality errors or cis peptide bonds detected by the Chirality and Cispeptide VMD plugins, respectively.
  3. 3 Total number of residues divided by total number of chirality errors or cis peptide bonds. For chirality errors, all protein and nucleic acid residues are counted; for cis peptide bonds, only protein residues are counted.
  4. 4 For chirality, only structures containing at least one protein or nucleic acid residue were considered. For cis peptide bonds, only structures containing at least one peptide bond were kept in the analysis.