../ pdb_000021ik_xyz-ext-atom_v1-0.xml.gz 30-Jan-2026 16:29 25K pdb_000021ik_xyz-no-atom_v1-0.xml.gz 30-Jan-2026 16:29 21K pdb_000021ik_xyz_v1-0.cif.gz 30-Jan-2026 16:29 70K pdb_000021ik_xyz_v1-0.xml.gz 30-Jan-2026 16:29 87K