6Guttman M, Rinn J. Modular regulatory principles of large non-coding RNAs. Nature, 2012, 482(7385): 339-346.
7Kligun E, Mandel-Gutfreund Y. Conformational readout of RNA by small ligands. RNA Biol, 2013, 10(6): 982- 990.
8Wang YX, Lu M, Draper DE. Specific ammonium ion requirement for functional ribosomal RNA tertiary struc- ture. Biochemistry, 1993, 32(46): 12279-12282.