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. 2016 Nov 2;30(3-4):163–177. doi: 10.1080/01677063.2016.1229781

Figure 3.

Figure 3.

The voltage-gated sodium channel as a target for pyrethroids. (a) Diagram of the voltage gated sodium channel showing the four repeat domains (I-IV), each comprising six membrane spanning helices (S1-S6). The positions of resistance mutations that identify pyrethroid binding sites PyR1 (red circles) and PyR2 (blue circles) are highlighted. The proposed PyR1 (b) and PyR2 (c) sites are shown in more detail, taken from O'Reilly et al. (2006) and Du et al. (2013). Positions of the mutations originally identified in pyrethroid and DDT-resistant parats Drosophila strains are also shown (yellow circles).