../ pdb_00004y21_xyz-ext-atom_v1-4.xml.gz 03-Nov-2023 17:27 100K pdb_00004y21_xyz-no-atom_v1-4.xml.gz 03-Nov-2023 17:27 27K pdb_00004y21_xyz_v1-4.cif.gz 03-Nov-2023 17:27 229K pdb_00004y21_xyz_v1-4.xml.gz 03-Nov-2023 17:27 310K