../ pdb_00002k31_xyz-ext-atom_v1-4.xml.gz 03-May-2024 16:56 1011K pdb_00002k31_xyz-no-atom_v1-4.xml.gz 03-May-2024 16:56 26K pdb_00002k31_xyz_v1-4.cif.gz 03-May-2024 16:56 1M pdb_00002k31_xyz_v1-4.xml.gz 03-May-2024 16:56 1M