Table 2. Dependence of validation statistics on journal impact factor.
Structures for which the primary literature reference is in Nature, Science, Cell, Molecular Cell or EMBO Journal (high impact) are compared with structures published in other journals (low impact) both for the entire set of low-impact structures and for structures selected as mates of the high-impact structures. Mean R factors are computed for the subset of PDB entries for which they were reported.
| Criterion | Low impact | High impact | Low-impact mates |
|---|---|---|---|
| Resolution (Å) | 2.12 | 2.36 | 2.36 |
| ASU volume (Å3) | 2.92 × 105 | 4.32 × 105 | 4.31 × 105 |
| Rwork | 0.198 | 0.216 | 0.207 |
| Rfree | 0.240 | 0.259 | 0.253 |
| Real-space R factor | 0.138 | 0.169 | 0.151 |
| MolProbity Ramachandran favoured (%) | 95.5 | 93.1 | 93.8 |