DNA-triplex stabilizing properties of 8-aminoguanine
|Title||DNA-triplex stabilizing properties of 8-aminoguanine|
|Publication Type||Journal Article|
|Year of Publication||2000|
|Authors||Soliva, Robert, García Ramón Güimil, J. Blas Ramón, Eritja Ramon, Asensio Juan Luis, González Carlos, F. Luque Javier, and Orozco Modesto|
|Journal||Nucleic Acids Research|
A DNA-triplex stabilizing purine (8-aminoguanine) is designed based on molecular modeling and synthesized. The substitution of guanine by 8-aminoguanine largely stabilizes the triplex both at neutral and acidic pH, as suggested by molecular dynamics and thermodynamic integration calculations, and demonstrated by melting experiments. NMR experiments confirm the triplex-stabilizing properties of 8-aminoguanine and demonstrate that few changes are found in the structure of the triplex due to the presence of this modified base.