../ pdb_000021ex_xyz-ext-atom_v1-1.xml.gz 18-Sep-2026 15:34 79K pdb_000021ex_xyz-no-atom_v1-1.xml.gz 18-Sep-2026 15:34 31K pdb_000021ex_xyz_v1-1.cif.gz 18-Sep-2026 15:34 103K pdb_000021ex_xyz_v1-1.xml.gz 18-Sep-2026 15:34 136K