Table 3. Thermal stability of model heterochiral duplexesa.
Name | Duplexes (5ʹ–3ʹ) | Tmb (°C) | ΔTmb (°C) | |
---|---|---|---|---|
D1 | AGAAAGAGAAGA | UCUUUCUCUUCU | 50.0 | 0 |
D2 | AGAAAGAGAAGA | UCUUUCUCUUCU | 15.9 | −34.1 |
D3 | AGAAAGAGAAGA | UCUUUCUCUUCU | 17.9 | −32.1 |
D4 | AGAAAGAGAAGA | UCLUUUCLUCUUCLU | 63.6 | 0 |
D5 | AGAAAGAGAAGA | UCLUUUCLUCUUCLU | 41.5 | −22.1 |
D6 | AGAAAGAGAAGA | UMCMUMUMUMCMUMCMUMUMCMUM | 57.6 | 0 |
D7 | AGAAAGAGAAGA | UMCMUMUMUMCMUMCMUMUMCMUM | 26.1 | −31.5 |
D8 | AMGMAMAMAMGMAMGMAMAMGMAM | UCUUUCUCUUCU | 52.0 | 0 |
D9 | AMGMAMAMAMGMAMGMAMAMGMAM | UCUUUCUCUUCU | 13.5 | −38.5 |
D10 | AGAAAGAGAAGA | UMCLUMUMUMCLUMCMUMUMCLUM | 68.7 | 0 |
D11 | AGAAAGAGAAGA | UMCLUMUMUMCLUMCMUMUMCLUM | 47.7 | −21.0 |
a–solution: 1 M NaCl, 20 mM sodium cacodylate, 0.5 mM Na2EDTA, pH 7.0;
b–calculated for a 20 µM oligomer concentration;
2ʹ-OMe-RNAs are shown as AM, CM, GM, UM; LNA-C is shown as CL, and the beta-L-oligomers are italicized.