    New chain ID            Original chain ID

26ip-pdb-bundle1.pdb:
           A                         A

26ip-pdb-bundle2.pdb:
           B                         B

26ip-pdb-bundle3.pdb:
           C                         C

26ip-pdb-bundle4.pdb:
           D                         D
           G                         G
           H                         H
           I                         I
           J                         J
