    New chain ID            Original chain ID

9d47-pdb-bundle1.pdb:
           A                         A
           E                         E
           I                         I
           M                         M
           Q                         Q
           U                         U

9d47-pdb-bundle2.pdb:
           C                         C
           G                         G
           K                         K
           O                         O
           S                         S
           X                         X
