    New chain ID            Original chain ID

5o09-pdb-bundle1.pdb:
           A                        1A
           B                        1B
           C                        1C
           D                        2A
           E                        2B
           F                        2C
           G                        3A
           H                        3B
           I                        3C
           J                        4A
           K                        4B
           L                        4C
           M                        5A
           N                        5B
           O                        5C
           P                        6A
           Q                        6B
           R                        6C
           S                        7A
           T                        7B
           U                        7C
           V                        8A
           W                        8B
           X                        8C
