Fig. 2

Structure of AvpA. a AvpA in ribbon representation (α-helices gold, β-strands blue, loops grey, and VR red). The amino acid positions of the N- and C-termini of the AvpA model are indicated. b Structural superposition of AvpA (magenta) with Mtd (orange, left), TvpA (blue, middle), and CLEC5A (red, right). c The core elements of the CLec-fold in AvpA in ribbon representation (α-helices red, β-strands blue). The inserts are ghosted. d Topology diagram of the CLec-fold in AvpA. e Inserts of AvpA in ribbon representation (insert 2, residues 41–57, green; insert 3, residues 89–114, purple; insert 4, residues 120–179, teal). The core elements of the CLec-fold are ghosted