../ pdb_000021ai_xyz-ext-atom_v1-0.xml.gz 03-Jul-2026 15:34 152K pdb_000021ai_xyz-no-atom_v1-0.xml.gz 03-Jul-2026 15:34 38K pdb_000021ai_xyz_v1-0.cif.gz 03-Jul-2026 15:34 179K pdb_000021ai_xyz_v1-0.xml.gz 03-Jul-2026 15:34 241K