Structure of the Mammalian Rescue Complex
(A) Overview of the rescue complex assembled with Pelota (pink) and Hbs1l (brown).
(B) Decoding center of the rescue complex.
(C) Hydrogen-bonding interactions between the β3′-β4′ loop of Pelota (pink) and 18S rRNA nucleotides (yellow).
(D and E) Density corresponding to mRNA in the (D) termination or (E) rescue complexes both assembled on the same (NC-stop) mRNA stalled with the UGA stop codon in the A site. The ribosomal small subunit, P- and E-site tRNAs, and eRF1 or Pelota are indicated.