    New chain ID            Original chain ID

8xlf-pdb-bundle1.pdb:
           A                         A
           L                         L
           H                         H
           B                         B
           I                         I
           E                         E
           C                         C
           J                         J
           F                         F

8xlf-pdb-bundle2.pdb:
           D                         D
           K                         K
           G                         G
