../ pdb_000021bk_xyz-ext-atom_v1-2.xml.gz 10-Jul-2026 15:59 141K pdb_000021bk_xyz-no-atom_v1-2.xml.gz 10-Jul-2026 15:59 35K pdb_000021bk_xyz_v1-2.cif.gz 10-Jul-2026 15:59 306K pdb_000021bk_xyz_v1-2.xml.gz 10-Jul-2026 15:59 399K