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. 2017 Mar 3;7:43770. doi: 10.1038/srep43770

Figure 6. Protein topology of D. nigrosparsa receptors under positive selection.

Figure 6

The predicted topologies of odorant, gustatory, and ionotropic receptors, showing distribution of non-synonymous substitutions (β > α > 0) on conserved residues (see methods, Figure S4) between D. nigrosparsa and the 12 Drosophila species (blue circles) and conserved cysteines (orange circles) along protein domains. Seven trans-membrane domains were inferred for ORs and GRs, three for IRs.