In prediction center website a specific format of target PDBs are given. I want to convert structure from www.wwpdb.org to CASP14 prediction center compatible PDB file.
While the default download format of http://www.wwpdb.org has been changed to mmcif, you can still download the files in the old pdb format. See http://www.wwpdb.org/ftp/pdb-ftp-sites for instructions. Also, openBabel http://openbabel.org/wiki/Main_Page can be used to convert between different coordinate file formats