../ pdb_00003r21_xyz-ext-atom_v1-2.xml.gz 08-Sep-2023 16:27 48K pdb_00003r21_xyz-no-atom_v1-2.xml.gz 08-Sep-2023 16:27 24K pdb_00003r21_xyz_v1-2.cif.gz 08-Sep-2023 16:27 68K pdb_00003r21_xyz_v1-2.xml.gz 08-Sep-2023 16:27 88K