    New chain ID            Original chain ID

9tkq-pdb-bundle1.pdb:
           A                        AA
           B                        AB
           C                        AC
           D                        AD
           E                        AE
           F                        AF
           G                        AG
           H                        AH
           I                        AI
           J                        AJ
           K                        AK
           L                        AL
           M                        AM
           N                        AN
           O                        AO
           P                        AP
           Q                        AQ
           R                        AR
           S                        AS
           T                        AT
           U                        B0
           V                        B1
           W                        B2
           X                        B3
           Y                        B5
           Z                        B6
           a                        B7
           b                        B8
           c                        B9
           d                        BA
           e                        BB
           f                        BC
           g                        BD
           h                        BE
           i                        BF
           j                        BI
           k                        BK
           l                        BM
           m                        BN
           n                        BO
           o                        BP
           p                        BQ
           q                        BR
           r                        BS
           s                        BT
           t                        BU
           u                        BV
           v                        BW
           w                        BX
           x                        BY
           y                        D1

9tkq-pdb-bundle2.pdb:
           A                        D2
           B                        D3
           C                        D4
           D                        D5
           E                        F2
