    New chain ID            Original chain ID

5fki-pdb-bundle1.pdb:
           A                        1A
           B                        1B
           C                        1C
           D                        1D
           E                        1E
           F                        1F
           G                        1G
           H                        1H
           I                        1I
           J                        1J
           K                        1K
           L                        1L
           M                        1M
           N                        1N
           O                        1O
           P                        1P
           Q                        1Q
           R                        1R
           S                        1S
           T                        1T
           U                        1U
           V                        1V
           W                        1W
           X                        1X
           Y                        1Y
           Z                        1Z
           a                        10
           b                        11
           c                        12
           d                        13
           e                        14
           f                        15
           g                        16
           h                        17
           i                        18
           j                        19
           k                        2A
           l                        2B
           m                        2C
           n                        2D
           o                        2E
           p                        2F
           q                        2G
           r                        2H
           s                        2I
           t                        2J
           u                        2K
           v                        2L
           w                        2M
           x                        2N
           y                        2O
           z                        2P
           0                        2Q
           1                        2R
           2                        2S
           3                        2T
           4                        2U
           5                        2V
           6                        2W
           7                        2X
           8                        2Y
           9                        2Z

5fki-pdb-bundle2.pdb:
           A                        20
           B                        21
           C                        22
           D                        23
           E                        24
           F                        25
           G                        26
           H                        27
           I                        28
           J                        29
           K                        3A
           L                        3B
           M                        3C
           N                        3D
           O                        3E
           P                        3F
           Q                        3G
           R                        3H
           S                        3I
           T                        3J
           U                        3K
           V                        3L
