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. 2020 Oct 8;12(10):647. doi: 10.3390/toxins12100647

Figure 4.

Figure 4

Model of the structural changes of domain I α-helices during Cry toxin oligomerization. We propose that a cleavage before helix α-2b is needed to induce oligomerization. This helix α-2b could then move freely and change its location to form an extended helix α-3 that is required to make further contacts with adjacent monomers during oligomerization. Additional changes must occur, such as the movement of helices α-4 and α-5, as has been proposed by previous works reported in the literature.