Here is an example of my messing with a lab solution.

just cut and paste the sequence or do the steps to see the change.

Alternate structure space for human tRNAs-shape0
http://eterna.cmu.edu/web/lab/4575376/
http://eterna.cmu.edu/game/browse/457…

begin melt temp rise 67*, 87*final; -27.2kcal

flipped the C40G52 pair and got great dotplot improvement.
GGGCCAGUGGCGCAAUGGAUAACGCGUCUGACUACGGAUGAGAAGAUUCUACGUUCGACUCCUGGCUGGCUCGCCA

then flipped G36C56 for more dot plot improvement and lower energy.
GGGCCAGUGGCGCAAUGGAUAACGCGUCUGACUACCGAUGAGAAGAUUCUACGUUGGACUCCUGGCUGGCUCGCCA

removed G30 and flipped G10U27 for dot and melt plot improvement.
GGGCCAGUGUCGCAAUGGAUAACGCGGCUAACUACCGAUGAGAAGAUUCUACGUUGGACUCCUGGCUGGCUCGCCA

flipped C11G26 for energy, melt and dot plot improvement.
GGGCCAGUGUGGCAAUGGAUAACGCCGCUAACUACCGAUGAGAAGAUUCUACGUUGGACUCCUGGCUGGCUCGCCA

flipped 3G70C for dot plot improvement and small energy gain.
this configuration clean dot plot, good melt plot bend at 77*C,final 87*C; energy -29.3 kcal.
GGCCCAGUGUGGCAAUGGAUAACGCCGCUAACUACCGAUGAGAAGAUUCUACGUUGGACUCCUGGCUGGGUCGCCA

More mods all in rings: final submit -33.4kcal, very clean plots
GGCCCAGUGUGGCGAAAGAUAAAGCCGCGAAAUACCGAUGAGAGAAAUCUACGUUGGGAAAGAAGCUGGGUCAACA

Hope this is helpful to beginners.

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