../ pdb_00007r21_xyz-ext-atom_v1-2.xml.gz 27-Jun-2025 15:30 672K pdb_00007r21_xyz-no-atom_v1-2.xml.gz 27-Jun-2025 15:30 105K pdb_00007r21_xyz_v1-2.cif.gz 27-Jun-2025 15:30 745K pdb_00007r21_xyz_v1-2.xml.gz 27-Jun-2025 15:30 1M