    New chain ID            Original chain ID

8ro0-pdb-bundle1.pdb:
           A                         2
           B                         5
           C                         6
           D                         A
           E                         B
           F                         C
           G                         D
           H                         E
           I                         I
           J                         J
           K                         K
           L                         L
           M                         M
           N                         N
           O                         O
           P                         P
           Q                        PX
           R                         Q
           S                         R
           T                         S
           U                         T
           V                        TF

8ro0-pdb-bundle2.pdb:
           A                         W
           B                         Z
           C                         a
           D                         b
           E                         c
           F                         d
           G                         e
           H                         f
           I                         g
           J                         h
           K                         i
           L                         j
           M                         k
           N                         l
           O                         m
           P                         n
           Q                         o
           R                         p
           S                         q
           T                         r
           U                         s
           V                         t
           W                         y
           X                        In
