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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
The canonical serpin tertiary structure (PDB code: 1QLP) comprises three β-sheets (orange), seven to nine α-helices (blue) and the reactive centre loop (red) shown in the front (A) and back (B) orientations. PDB code 1QLP was accessed on 25 March 2021. Created with BioRender.com.