https://www.ncbi.nlm.nih.gov/Structure/pdb/8PJL
8PJL: DNA duplex forming base triplets in minor groove
DNA (5'-D(*AP*AP*CP*TP*GP*AP*GP*AP*GP*AP*CP*GP*TP*A)-3')DNA (5'-D(*TP*AP*CP*GP*TP*CP*TP*CP*TP*CP*AP*GP*TP*C)-3')MAGNESIUM IONPOTASSIUM ION
dnaduplexformingbasetriplets