Pyrococcus abyssi rubredoxin at 0.43 Å

Paknia et al. report the X-ray crystal structure of rubredoxin from the archaeon Pyrococcus abyssi rubredoxin solved at a resolution of 0.43 Å [1]. According to the authors, it “represents the highest resolution protein structure yet determined”. Currently, the PDB contains only 20 entries, apart from the reported ones [3, 4], at a resolution better than 0.7 Å.

1. Paknia, E., Flensburg, C., Chodkiewicz, M.L., Fogh, R.H., Keller, P., Vonrhein, C., Schulze-Briese, C., Dominiak, P.M., Bourenkov, G., Bricogne, G. and Chari, A. (2026) Towards routine accurate electron-density studies of biological macromolecules. Acta Crystallographica D82, 1044—1055.
2. Kuhn, C. (2026) Every electron counts: most detailed protein structure to date revealed. Max Planck Institute for Multidisciplinary Sciences, Research News, 2 September 2026.
3. PDB:30OR
4. PDB:30OH