    New chain ID            Original chain ID

4wz7-pdb-bundle1.pdb:
           A                         1
           B                         2
           C                         3
           D                         4
           E                         5
           F                         6
           G                         A
           H                         B
           I                         C
           J                         E
           K                         G
           L                         H
           M                         I
           N                         K
           O                         L
           P                         Z
           Q                         D
           R                         F
           S                         J
           T                         M
           U                         N
           V                         O
           W                         P
           X                         Q
           Y                         R
           Z                         S
           a                         T
           b                         U
           c                         V
           d                         W
           e                         X
           f                         Y
           g                        AA
           h                        AB
           i                        AC
           j                        AD
           k                        AE
           l                        AF
           m                        AG
           n                        AH
           o                        AI
           p                        AJ
           q                        AK
           r                        AL
           s                        AM
           t                        AN
           u                        AO
           v                        AP
           w                        AQ
           x                        AR
           y                        AS
           z                        AT
           0                        AU
           1                        AV
           2                        AW
           3                        AX
           4                        AY
           5                        AZ
           6                        BA
           7                        BB
           8                        BC
           9                        BD

4wz7-pdb-bundle2.pdb:
           A                        BE
           B                        BF
           C                        BG
           D                        BH
           E                        BI
