    New chain ID            Original chain ID

7tfo-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           H                         H
           I                         I
           J                         J
           L                         L
           P                         P
           Q                         Q
           X                         X
           Y                         Y
           Z                         Z
           D                         D
           E                         E
           F                         F
           G                         G
           K                         K
