    New chain ID            Original chain ID

9qf4-pdb-bundle1.pdb:
           A                        A1
           B                        Aa
           C                        Ab
           D                        Ac
           E                        Ad
           F                        Ae
           G                        Af
           H                        Ag
           I                        Ah
           J                        Ai
           K                        Aj
           L                        Ak
           M                        Al
           N                        Am
           O                        An
           P                        Ao
           Q                        Ap
           R                        Aq
           S                        Ar
           T                        As
           U                        At
           V                        Au
           W                        Av
           X                        Aw
           Y                        Ax
           Z                        Ay

9qf4-pdb-bundle2.pdb:
           A                        B1
           B                        B2
           C                        BA
           D                        BB
           E                        BC
           F                        BD
           G                        BE
           H                        BF
           I                        BG
           J                        BH
           K                        BI
           L                        BJ
           M                        BK
           N                        BL
           O                        BM
           P                        BN
           Q                        BO
           R                        BP
           S                        BQ
           T                        BR
           U                        BS
           V                        BT
           W                        BU
           X                        BV
           Y                        BW
           Z                        BX
           a                        BY
           b                        BZ
           c                        Ba

9qf4-pdb-bundle3.pdb:
           A                        Bb
           B                        Bc
           C                        Bd
           D                        Be
           E                        Bf
           F                        Bg
           G                        Bh
           H                        Bi
           I                        Bj
           J                        Bk
           K                        Bl
