2L1F:
reference: Structure of a Conserved Retroviral RNA Packaging Element by NMR Spectroscopy and Cryo-Electron Tomography., Miyazaki Y, Irobalieva RN, Tolbert B, Smalls-Mantey A, Iyalla K, Loeliger K, D'Souza V, Khant H, Schmid MF, Garcia E, Telesnitsky A, Chiu W, Summers MF, J Mol Biol. 2010 Oct 8. PMID: 20933521

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