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Figure 5
Electron-density map (2mFoDFc) from reflections associated with PDB entry 4s1l to 1.75 Å resolution (Ginn et al., 2015BB8) associated with Trp163 (a) and Lys52 (d), their corresponding electron density in the initial merge for the higher resolution data set, (b) and (e), and the final presented 1.46 Å resolution structure, (c) and (f), at a σ of 1.5. The Lys52 side chain shows the prominence of the H atoms on the methylene groups, which are not pronounced on the perpendicular profile. The N, C and O atoms are distinguishable compared with the 1.75 Å resolution structure. The high-resolution information beyond 1.75 Å and post-refinement of this data set appear to have separate sequential improvements on the quality of the electron density compared with the 4s1l structure.

Journal logoBIOLOGICAL
ISSN: 1399-0047
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