    New chain ID            Original chain ID

9pdi-pdb-bundle1.pdb:
           C                         C
           D                         D
           E                         E
           G                         G
           H                         H
           I                         I
           J                         J
           K                         K
           L                         L
           M                         M
           v                         v
           A                         A
           B                         B
           F                         F
           c                         c
