    New chain ID            Original chain ID

6tmg-pdb-bundle1.pdb:
           q                         q
           i                         i
           t                         t
           g                         g
           o                         o
           k                         k
           j                         j
           s                         s
           u                         u
           h                         h
           e                         e
           x                         x
           b                         b
           r                         r
           p                         p
           v                         v
           l                         l
           c                         c
           d                         d
           m                         m
           n                         n
           f                         f
           w                         w
           a                         a
           Q                         Q
           I                         I
           T                         T
           G                         G
           O                         O
           K                         K
           J                         J
           S                         S
           U                         U
           H                         H
           E                         E
           X                         X
           B                         B
           R                         R
           P                         P
           V                         V
           L                         L

6tmg-pdb-bundle2.pdb:
           C                         C
           D                         D
           M                         M
           N                         N
           F                         F
           W                         W
           A                         A
