Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/3IH7
5'-D(*GP*GP*TP*AP*GP*AP*CP*CP*TP*GP*GP*AP*CP*G)-3'5'-D(AP*TP*CP*TP*GP*GP*AP*CP*CP*TP*GP*CP*A)-3'N-glycosylase/DNA lyase
crystal structureoxoguanine glycosylasecatalyticallyactivehuman
https://www.ncbi.nlm.nih.gov/Structure/pdb/2Z2P
Virginiamycin B...
crystal structurecatalyticallyinactivevirginiamycinb