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Figure 4
SAD phasing structural analysis of crambin. (a) A portion of what would now be called the sulfur SAD map for crambin at 1.5 Å resolution. The densest features are at S atoms. (b) The same portion as in (a) for the final 2Fo − Fc map after refinement to R = 0.104 at 1.5 Å resolution. (c) All-atom atomic model of crambin drawn by Irving Geis. S atoms are colored yellow and the first helix is filled in blue. (a) and (b) are adapted from Fig. 2 of Hendrickson & Teeter (1981BB95) with permission from Springer Nature, and (c) is adapted from a drawing by Irving Geis with permission from the Howard Hughes Medical Institute, which now owns the Geis collection.

IUCrJ
Volume 10| Part 5| September 2023| Pages 521-543
ISSN: 2052-2525
https://doi.org/10.1107/S2052252523006449