../ pdb_000021ch_xyz-ext-atom_v1-0.xml.gz 21-Aug-2026 15:43 26K pdb_000021ch_xyz-no-atom_v1-0.xml.gz 21-Aug-2026 15:43 24K pdb_000021ch_xyz_v1-0.cif.gz 21-Aug-2026 15:43 77K pdb_000021ch_xyz_v1-0.xml.gz 21-Aug-2026 15:43 100K