M2 quiz: select the correct adamantane binding model.
Adamantane drugs inhibit the M2 proton channel from influenza A, a tiny tetrameric protein that equalizes pH between the virus and the endosome of the cell that has swallowed it. Over the past few years a great deal of structural evidence has accumulated showing how adamantane drugs work. Problem is that the evidence supports two different models of M2 inhibition. “Discount Thoughts” provides a great review on a mechanism that is truly a tough nut to crack.
