    New chain ID            Original chain ID

9fzl-pdb-bundle1.pdb:
           A                        2M
           B                        2N
           C                        2O
           D                        2P
           E                        2Q
           F                        2R
           G                        2S
           H                        2T
           I                        2U
           J                        2V
           K                        3A
           L                        3B
           M                        3C
           N                        3D
           O                        3E
           P                        3F
           Q                        3G
           R                        3H
           S                        3I
           T                        3J
           U                        3K
           V                        3L
           W                        40
           X                        4A
           Y                        4B
           Z                        4C
           a                        4D
           b                        4E
           c                        4F
           d                        4G
           e                        4H
           f                        4I
           g                        4J
           h                        4K
           i                        4L
           j                        4M
           k                        4N
           l                        4O
           m                        4P
           n                        4Q
           o                        4R
           p                        4S
           q                        4T
           r                        4U
           s                        4V
           t                        4W
           u                        4X
           v                        4Y
           w                        4Z
           x                        2m
           y                        2n
           z                        2o
           0                        2p
           1                        2q
           2                        2r
           3                        2s
           4                        2t
           5                        2u
           6                        2v
           7                        3a
           8                        3b
           9                        3c

9fzl-pdb-bundle2.pdb:
           A                        3d
           B                        3e
           C                        3f
           D                        3g
           E                        3h
           F                        3i
           G                        3j
           H                        3k
           I                        3l
           J                        41
           K                        4a
           L                        4b
           M                        4c
           N                        4d
           O                        4e
           P                        4f
           Q                        4g
           R                        4h
           S                        4i
           T                        4j
           U                        4k
           V                        4l
           W                        4m
           X                        4n
           Y                        4o
           Z                        4p
           a                        4q
           b                        4r
           c                        4s
           d                        4t
           e                        4u
           f                        4v
           g                        4w
           h                        4x
           i                        4y
           j                        4z
