Solution structure of DNA duplex containing a 7,8-dihydro-8-oxo-1,N6-ethenoadenine base modification that induces exclusively A->T transversions in Escherichia coli
7,8-Dihydro-8-oxo-1,N6-ethenoadenine: an exclusively Hoogsteen-paired thymine mimic in DNA that induces A\u2192T transversions in Escherichia coli