Figure 6

Target genes under selective pressure and differential VIPR1 protein structure in Amur ide ecotypes. (a) Venn diagram showing unique and overlapping genes among the PSGs and genes with stop-lost and stop-gained SNPs in DL, GG, and SH. (b) Structural analysis of the two positively selected sites of VIPR1. The protein coordinate is based on Ensembl ID ENSDARP00000116281. The lower panel shows the Pfam domains of the protein. The red stars indicate two sites (455th and 456th) that are essential for ligand binding. (c–e) Spatial distribution of positively selected sites in the 3D structure for Amur ide VIPR1. Three-dimensional views of VIPR1 proteins in DL (c), GG (d) and SH (e) highlight positively selected sites (455th and 456th) colored in the red rectangle frame.