Fig. 1

High level phylogenetic tree of S. suis IgM protease based on 1999 sequences. The sequences were aligned using Geneious global alignment with free end gaps (Geneious prime software, version 2021.1.1). This alignment was used to build a phylogenetic tree using the tree building feature of Geneious (tree build method: PhyML; substitution model: le Gascuel)