Fig. 1

ThSwo protein architecture, modeling and phylogenetic relationships with expansin-related proteins. a Bottom scheme of the ThSwo domain organization; top ThSwo protein structure prediction. The best-ranked N- and C-terminal ThSwo model (blue) was superimposed on the C-terminal domain of cellobiohydrolase I from T. reesei (PDB code: 2CBH) and the structure of maize beta-expansin (PDB code: 2HCZ), respectively, highlighted in red using PYMOL software. b Phylogenetic divergence between ThSwo and representative plant expansins, expansin-related proteins from bacteria, fungi, amoebozoa and nematodes, pollen allergen proteins and family-45 glycosyl hydrolases (GH45). The bootstrap values are shown at each node. The complete list of sequences and species name abbreviations used to construct the tree are given in Additional file 1: Table S1. The ThSwo sequence (Th-IOC3844) is identified with an arrow