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. 2024 Sep 18;80(Pt 10):713–721. doi: 10.1107/S2059798324008659

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© Kamel El Omari et al. 2024

This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

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Variation of f′′ with X-ray wavelength (or energy) showing absorption K edges for sulfur (green), chlorine (magenta), calcium (cyan) and zinc (orange). (a) Theoretical f′′ values obtained from the website https://skuld.bmsc.washington.edu/scatter/. Wavelengths used for data collections are marked with red, blue and grey arrows for lysozyme, thermolysin and LMO4, respectively. (b) Zn K-edge absorption-edge scan as determined by CHOOCH (Evans & Pettifer, 2001 ▸) measured from an LMO4 crystal. (c) Ca K-edge absorption edge scan as determined by CHOOCH and measured from a thermolysin crystal.