MX2 and infection: Nevertheless, in infection experiments carried out in the presence of the monomeric variant MX2 Δ1-25 M574D (Buffone et al., 2015, Dicks et al., 2015), where interactions between different MX2 species are prevented, wild-type MX2 still shows a more potent inhibition of HIV-1 than does MX2 (GMX1) (Figure 4C).