Minimum-energy path for a u6 RNA conformational change involving protonation, base-pair rearrangement and base flipping.
Venditti, V., Clos, L., Niccolai, N., Butcher, S.E.(2009) J Mol Biol 391: 894-905
- PubMed: 19591840 
- DOI: 10.1016/j.jmb.2009.07.003
- Primary Citation of Related Structures:  
2KEZ, 2KF0 - PubMed Abstract: 
The U6 RNA internal stem-loop (U6 ISL) is a highly conserved domain of the spliceosome that is important for pre-mRNA splicing. The U6 ISL contains an internal loop that is in equilibrium between two conformations controlled by the protonation state of an adenine (pK(a)=6 ...