    New chain ID            Original chain ID

25vf-pdb-bundle1.pdb:
           b                         b
           2                         2
           6                         6
           c                         c
           7                         7
           A                         A
           5                         5
           9                         9
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           G                         G
           H                         H
           I                         I
           J                         J
           K                         K
           L                         L
           M                         M
           N                         N
           O                         O
           P                         P
           Q                         Q
