    New chain ID            Original chain ID

6gqv-pdb-bundle1.pdb:
           A                         1
           B                         3
           C                         4
           D                        P0
           E                        P2
           F                         A
           G                         B
           H                         C
           I                         D
           J                         E
           K                         F
           L                         G
           M                         H
           N                         I
           O                         J
           P                         L
           Q                         M

6gqv-pdb-bundle2.pdb:
           A                         N
           B                         O
           C                         P
           D                         Q
           E                         R
           F                         S
           G                         T
           H                         U
           I                         V
           J                         W
           K                         X
           L                         Y
           M                         Z
           N                         a
           O                         b
           P                         c
           Q                         d
           R                         e
           S                         f
           T                         g
           U                         h
           V                         i
           W                         j
           X                         k
           Y                         l
           Z                         m
           a                         n
           b                         o
           c                         p
           d                         2
           e                         q
           f                         r
           g                         s
           h                         t
           i                         u
           j                         v
           k                         w
           l                         x
           m                         y
           n                         z
           o                        AA
           p                        AB
           q                        AC
           r                        AD
           s                        AE
           t                        AF
           u                        AG
           v                        AH
           w                        AI
           x                        AJ
           y                        AK
           z                        AL
           0                        AM
           1                        AN
           2                        AO
           3                        AP
           4                        AQ
           5                        AR
           6                        AS
           7                        AT

6gqv-pdb-bundle3.pdb:
           A                        AU
           B                        AV
           C                        AW
           D                        AX
           E                        AY
           F                        AZ
           G                        BA
