../ pdb_00004r28_xyz-ext-atom_v1-2.xml.gz 15-Sep-2023 17:08 323K pdb_00004r28_xyz-no-atom_v1-2.xml.gz 15-Sep-2023 17:08 74K pdb_00004r28_xyz_v1-2.cif.gz 15-Sep-2023 17:08 737K pdb_00004r28_xyz_v1-2.xml.gz 15-Sep-2023 17:08 1010K