Figure 5.

3D crystral structure of M1. The figure was generated using BioHealthBase. M1 is identified as dimers. Site at position 219 (yellow circles), which is under positive selection for human influenza, is located at the edge of the structure.

Furuse et al. Virology Journal 2009 6:67   doi:10.1186/1743-422X-6-67
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