Figure 1 - full size

 

Figure 1.
Fig. 1. (a) Schematic diagram of Saccharomyces cerevisiae U6 snRNA and its conformations in the free U6 snRNP, the U4-U6 di-snRNP, and the U2–U6 snRNA complex in the activated spliceosome. The U6 ISL is indicated with a dashed box. (b) Sequence and secondary structure of the U6 ISL used in this study. The previously described A62G substitution that does not affect the overall structure of the U6 ISL is indicated with a box. The secondary structure is shown in the low-pH form, with a protonated A79 (indicated with a +) and a bulged U80.

The above figure is reprinted by permission from Elsevier: J Mol Biol (2009, 391, 894-905) copyright 2009.