    New chain ID            Original chain ID

8q7z-pdb-bundle1.pdb:
           A                        B5
           B                        B8
           C                        B7
           D                        Az
           E                        BA
           F                        BB
           G                        BC
           H                        BD
           I                        BE

8q7z-pdb-bundle2.pdb:
           A                        BF
           B                        BG
           C                        BH
           D                        BI
           E                        BJ
           F                        BL
           G                        BM
           H                        BN
           I                        BO
           J                        BP
           K                        BQ
           L                        BR
           M                        BS
           N                        BT
           O                        BU
           P                        BV
           Q                        BW
           R                        BX
           S                        BY
           T                        BZ
           U                        Ba
           V                        Bb
           W                        Bc
           X                        Bd
           Y                        Be
           Z                        Bf
           a                        Bg
           b                        Bh
           c                        Bi
           d                        Bj
           e                        Bk
           f                        Bl
           g                        Bm
           h                        Bo
           i                        Bp
           j                        Br
           k                        A2
           l                        Aa
           m                        AA
           n                        AB
           o                        Ab
           p                        Ad
           q                        AD
           r                        AE
           s                        Af
           t                        Ag
           u                        Ah
           v                        Ai
           w                        Ak
           x                        Am
           y                        An
           z                        At
           0                        Au
           1                        Av
           2                        Aw
           3                        Ax

8q7z-pdb-bundle3.pdb:
           A                        AZ
           B                        Ap
           C                        AC
           D                        Ae
           E                        AF
           F                        AG
           G                        Aj
           H                        Al
           I                        Ao
           J                        Ar
           K                        As
           L                        Ay
           M                        Ac
           N                         V
           O                        Aq
