To prime reverse transcription of Moloney murine leukaemia virus, a transfer RNA molecule must bind two regions of the retroviral RNA, the primer binding site (PBS) and primer activation signal within the U5-PBS; here, the NMR structures of the U5-PBS RNA and tRNA primer are solved, with and without the retroviral nucleocapsid protein, which remodels these regions.
- Sarah B. Miller
- F. Zehra Yildiz
- Victoria M. D’Souza