../ pdb_000021xg_xyz-ext-atom_v1-0.xml.gz 11-Sep-2026 15:44 16K pdb_000021xg_xyz-no-atom_v1-0.xml.gz 11-Sep-2026 15:44 16K pdb_000021xg_xyz_v1-0.cif.gz 11-Sep-2026 15:44 33K pdb_000021xg_xyz_v1-0.xml.gz 11-Sep-2026 15:44 37K