../ pdb_00004s21_xyz-ext-atom_v1-3.xml.gz 25-Oct-2024 18:23 167K pdb_00004s21_xyz-no-atom_v1-3.xml.gz 25-Oct-2024 18:23 44K pdb_00004s21_xyz_v1-3.cif.gz 25-Oct-2024 18:23 386K pdb_00004s21_xyz_v1-3.xml.gz 25-Oct-2024 18:23 529K