    New chain ID            Original chain ID

9tqk-pdb-bundle1.pdb:
           A                        1A
           B                        2A
           C                        3A
           D                        4A
           E                        1B
           F                        2B
           G                        3B
           H                        4B
           I                        5A
           J                        6A
           K                        7A
           L                        8A
           M                        5B
           N                        6B
           O                        7B
           P                        8B
