3N0E:
reference: The Effect of Asp-His-Ser/Thr-Trp Tetrad on the Thermostability of WD40-Repeat Proteins., Wu XH, Chen RC, Gao Y, Wu YD, Biochemistry. 2010 Nov 30;49(47):10237-45. Epub 2010 Nov 8. PMID: 20939513

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