    New chain ID            Original chain ID

7tdz-pdb-bundle1.pdb:
           H                         H
           h                         h
           t                         t
           s                         s
           r                         r
           g                         g
           G                         G
           L                         L

7tdz-pdb-bundle2.pdb:
           l                         l
           E                         E
           e                         e
           D                         D
           d                         d
           C                         C
           c                         c
           U                         U
           P                         P

7tdz-pdb-bundle3.pdb:
           O                         O
           Q                         Q
           N                         N
           M                         M
           B                         B
           b                         b
           A                         A

7tdz-pdb-bundle4.pdb:
           a                         a
           I                         I
           F                         F
           f                         f
           R                         R
           S                         S
           i                         i
           T                         T
