../ pdb_000020zk_xyz-ext-atom_v1-0.xml.gz 29-May-2026 15:01 207K pdb_000020zk_xyz-no-atom_v1-0.xml.gz 29-May-2026 15:01 58K pdb_000020zk_xyz_v1-0.cif.gz 29-May-2026 15:01 246K pdb_000020zk_xyz_v1-0.xml.gz 29-May-2026 15:01 334K