    New chain ID            Original chain ID

8h6j-pdb-bundle1.pdb:
           A                         A
           B                        6A
           C                        6a
           D                        6b
           E                        6c
           F                        6d
           G                        6e
           H                        6f
           I                        6g
           J                        5A
           K                        5B
           L                        5C
           M                        5D
           N                        5E
           O                        5a
           P                        5b
           Q                        5c
           R                        5d
           S                        5e
           T                        5f
           U                        5g
           V                        4A
           W                        4B
           X                        4C
           Y                        4D
           Z                        4E
           a                        4F
           b                        4G
           c                        4R
           d                        4S
           e                        4T
           f                        4U
           g                        4X
           h                        4Y
           i                        4a
           j                        4b
           k                        4c
           l                        4d
           m                        4e
           n                        4f
           o                        4g
           p                        2A
           q                        2B
           r                        2C
           s                        2D
           t                        2E
           u                        2F
           v                        2G
           w                        2H
           x                        2I
           y                        2J
           z                        2K
           0                        2L
           1                        2M
           2                        2a
           3                        2b
           4                        2c
           5                        2d
           6                        2e
           7                        2f
           8                        2g
