    New chain ID            Original chain ID

8b5l-pdb-bundle1.pdb:
           h                         h
           P                         P
           d                         d
           5                         5
           G                         G
           e                         e
           t                         t
           S                         S
           I                         I
           D                         D
           V                         V
           E                         E
           J                         J
           q                         q
           k                         k
           b                         b
           m                         m
           Z                         Z

8b5l-pdb-bundle2.pdb:
           T                         T
           i                         i
           F                         F
           n                         n
           L                         L
           O                         O
           8                         8
           C                         C
           Y                         Y
           B                         B
           R                         R
           X                         X
           p                         p
           M                         M
           H                         H
           7                         7
           r                         r
           Q                         Q
           f                         f
           a                         a
           A                         A
           g                         g
           K                         K
           u                         u
           v                         v
           j                         j
           N                         N
           o                         o
           s                         s
           c                         c
           W                         W
           l                         l
           U                         U
