../ pdb_000028sr_xyz-ext-atom_v1-4.xml.gz 22-Dec-2023 16:53 17K pdb_000028sr_xyz-no-atom_v1-4.xml.gz 22-Dec-2023 16:53 11K pdb_000028sr_xyz_v1-4.cif.gz 22-Dec-2023 16:53 27K pdb_000028sr_xyz_v1-4.xml.gz 22-Dec-2023 16:53 35K