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Incorporating chemical modification constraints into a dynamic programming algorithm for prediction of RNA secondary structure

Table 2. Lookup table for unstable triloops and stable tetraloops and hexaloops
Hairpin Ref(s). ΔG°37 loop, kcal/mol
CAACG 87 6.8
GUUAC 87 6.9
CAACGG 48 5.5
CCAAGG 48 3.3
CCACGG 48 3.7
CCCAGG 48 3.4
CCGAGG 48 3.5
CCGCGG 48 3.6
CCUAGG 48 3.7
CCUCGG 48 2.5
CUAAGG 48 3.6
CUACGG 47, 50 2.8
CUCAGG 48 3.7
CUCCGG 47 2.7
CUGCGG 47 2.8
CUUAGG 48 3.5
CUUCGG 47, 50 3.7
ACAGUACU 86 2.8
ACAGUGCU 86 2.9
ACAGUGAU 86 3.6
ACAGUUCU 86 1.8
  • For extra stable hairpins measured in 0.1 M Na+ (48, 87), placement was determined by assuming that the relative stability of loops remains constant between 0.1 and 1 M Na+. All values are based on experimental results rather than frequencies of occurrence as used in ref. 8. Unpaired nucleotides are shown in bold.

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