Stalled bacterial ribosomes can be rescued by interaction with SmpB protein and a highly structured transfer-messenger RNA, and a cryo-electron microscopy map of this complex now shows how EF-G-dependent translocation of this non-canonical ligand is facilitated by conformational changes in the ribosome and the transfer-messenger RNA.
- David J. F. Ramrath
- Hiroshi Yamamoto
- Christian M. T. Spahn