Figure 4From: Identification and characterization of three chemosensory receptor families in the cotton bollworm Helicoverpa armigeraAlignment of ligand-binding domains from putative H. armigera iGluRs and IRs with D. melanogaster iGluRs. Three key ligand-binding residues (R, T and D/E) in iGluR family are boxed. S1 and S2 domains are marked with coloured boxes at the bottom.Back to article page