RNA secondary structure predictions - G-U pairing

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Hello all!

I have been using RNAdraw from Ole Maatsura's lab to predict secondary
structures of viral sequences. The program allows the user to allow or
disallow G-U pairing in its calculations of structure and energy. I
would like to know which scenario is closer to actual in vivo
conditions. Thanks in advance!!

Jose E. N. Gonzales
The Immune Response Corporation
Carlsbad, CA