    New chain ID            Original chain ID

7mpj-pdb-bundle1.pdb:
           A                        BA
           B                        BB
           C                        BC
           D                        BD
           E                        BE
           F                        BF
           G                        BG
           H                        BH
           I                        BI
           J                        BJ
           K                        BK
           L                        BL
           M                        BM
           N                        BN
           O                        BO
           P                        BP
           Q                        BQ
           R                        BR
           S                        BS
           T                        BT
           U                        BU
           V                        BV
           W                        BW
           X                        BX
           Y                        BY
           Z                        BZ
           a                        Ba
           b                        Bb
           c                        Bc
           d                        Bd
           e                        Be
           f                        Bf
           g                        Bg
           h                        Bh
           i                        B5

7mpj-pdb-bundle2.pdb:
           A                        A1
           B                        A3
           C                        A4
           D                        AA
           E                        AB
           F                        AC
           G                        AD
           H                        AE
           I                        AF
           J                        AG
           K                        AH
           L                        AI
           M                        AJ
           N                        AL
           O                        AM
           P                        AN
           Q                        AO

7mpj-pdb-bundle3.pdb:
           A                        AP
           B                        AQ
           C                        AR
           D                        AS
           E                        AT
           F                        AU
           G                        AV
           H                        AW
           I                        AX
           J                        AY
           K                        AZ
           L                        Aa
           M                        Ab
           N                        Ac
           O                        Ad
           P                        Ae
           Q                        Af
           R                        Ag
           S                        Ah
           T                        Ai
           U                        Aj
           V                        Ak
           W                        Al
           X                        Am
           Y                        An
           Z                        Ao
           a                        Ap
