../ pdb_00001c53_xyz-ext-atom_v1-4.xml.gz 07-Aug-2026 19:54 3513 pdb_00001c53_xyz-no-atom_v1-4.xml.gz 07-Aug-2026 19:54 14K pdb_00001c53_xyz_v1-4.cif.gz 07-Aug-2026 19:54 14K pdb_00001c53_xyz_v1-4.xml.gz 07-Aug-2026 19:54 18K