The "pdb_na_reference_set_residues.csv" file lists the DNA and RNA residues contained in the PDB-NA Reference Set.
The subdirectories contain bonds and angles CSD-annotated by the "naval" program following the definitions in 10.1093/nar/gkw717, 10.1107/S2052520619002002, and 10.1093/nar/gkz1122.
