
A complex IRES at the 5'-UTR of a viral mRNA assembles a functional 48S
A 40S head swiveling movement in class-2 brings eIF3d closer to the core subunit of eIF3 (i.e. eIF3a), establishing interactions that stabilize its conformation. (B) Left, ribbon diagram colored according to pairwise r oot m ean s quare d eviation (r.m.s.d.) displacements for the open-to-closed transition, with displacements scale at the center ...