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Figure 2
The structure of proteinase K determined from Falcon III data and the density around its two disulfide bonds for the considered cameras. The density around the two disulfide bonds indicates increasing radiation damage as an effect of increasing dose. The positive difference density around Cβ of Cys283 in the CetaD data (black arrow) indicates a partially dislocated S atom. The 2mFo − DFc densities (blue meshes) are contoured at 1.5σ above the mean; mFo − DFc difference densities (green/red meshes) are contoured at ±3σ around the mean. All meshes were carved to 2 Å around the selected atoms in PyMOL (Schrödinger; https://www.pymol.org).

IUCrJ
Volume 6| Part 5| September 2019| Pages 921-926
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519010583