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Figure 1
Overall structure of PsEst3. Cartoon representation (a) and secondary-structure topology (b) of PsEst3. α-Helices and β-sheets are represented as coils and arrows, respectively. A sulfate ion and the catalytic triad (Ser128, Asp199 and His227) are represented as yellow sticks. The tetrapeptide for an oxyanion hole (red) and a PsEst3-specific region (blue and magenta) are highlighted. (c) Residues participating in the inter-motif interaction between α3 and α6 of PsEst3 are shown as stick models.

IUCrJ
Volume 10| Part 2| March 2023| Pages 220-232
ISSN: 2052-2525
https://doi.org/10.1107/S2052252523001562