Extended Data Fig. 2: β2 subunit, if intact, would clash with the bound Nef.

Overlay of the intact β2 subunit (dark red, PDB 2XA7) with β2 in the current structure (green) indicates that clashing would take place between Nef and N-terminus of the intact β2, specifically residues Asn10, Lys11, Lys12, and Gly13 (spheres).