    New chain ID            Original chain ID

9dae-pdb-bundle1.pdb:
           A                         A
           B                         C
           C                         E
           D                         G
           E                         I
           F                         K
           G                         M
           H                         O
           I                         Q
           J                         S
           K                         V
           L                         X
           M                         Z
           N                        BA
           O                        DA
           P                        FA
           Q                        HA
           R                        JA
           S                        LA
           T                        NA
           U                        PA
           V                        RA
           W                        TA
           X                        VA
