(A, C) Ribosomal association of [32P]MVHL-STOP mRNA after incubation of pre-TCs with eRFs and eIFs, as indicated, assayed by sucrose gradient centrifugation. The positions of 40S subunits and 80S ribosomes are indicated. (B) Toe-printing analysis of the 40S-containing fraction (panel A, circles) obtained after incubating pre-TCs with eRFs and eIFs. The positions of full-length cDNA and of toe-prints that correspond to 48S complexes are indicated. Lanes C, T, A, G depict cDNA sequences corresponding to MVHL-STOP mRNA.