../ pdb_00004n21_xyz-ext-atom_v1-4.xml.gz 25-Oct-2024 18:25 144K pdb_00004n21_xyz-no-atom_v1-4.xml.gz 25-Oct-2024 18:25 34K pdb_00004n21_xyz_v1-4.cif.gz 25-Oct-2024 18:25 309K pdb_00004n21_xyz_v1-4.xml.gz 25-Oct-2024 18:25 424K