    New chain ID            Original chain ID

4bp7-pdb-bundle1.pdb:
           A                        A0
           B                        A1
           C                        A2
           D                        A3
           E                        A4
           F                        A5
           G                        A6
           H                        A7
           I                        A8
           J                        A9
           K                        AA
           L                        AB
           M                        AC
           N                        AD
           O                        AE
           P                        AF
           Q                        AG
           R                        AH
           S                        AI
           T                        AJ
           U                        AK
           V                        AL
           W                        AM
           X                        AN
           Y                        AO
           Z                        AP
           a                        AQ
           b                        AR
           c                        AS
           d                        AT
           e                        AU
           f                        AV
           g                        AW
           h                        AX
           i                        AY
           j                        AZ
           k                        Aa
           l                        Ab
           m                        Ac
           n                        Ad
           o                        Ae
           p                        Af
           q                        Ag
           r                        Ah
           s                        Ai
           t                        Aj
           u                        Ak
           v                        Al
           w                        Am
           x                        An
           y                        Ao
           z                        Ap
           0                        Aq
           1                        Ar
           2                        As
           3                        At
           4                        Au
           5                        Av
           6                        Aw
           7                        Ax
           8                        B0
           9                        B1

4bp7-pdb-bundle2.pdb:
           A                        B2
           B                        B3
           C                        B4
           D                        B5
           E                        B6
           F                        B7
           G                        B8
           H                        B9
           I                        BA
           J                        BB
           K                        BC
           L                        BD
           M                        BE
           N                        BF
           O                        BG
           P                        BH
           Q                        BI
           R                        BJ
           S                        BK
           T                        BL
           U                        BM
           V                        BN
           W                        BO
           X                        BP
           Y                        BQ
           Z                        BR
           a                        BS
           b                        BT
           c                        BU
           d                        BV
           e                        BW
           f                        BX
           g                        BY
           h                        BZ
           i                        Ba
           j                        Bb
           k                        Bc
           l                        Bd
           m                        Be
           n                        Bf
           o                        Bg
           p                        Bh
           q                        Bi
           r                        Bj
           s                        Bk
           t                        Bl
           u                        Bm
           v                        Bn
           w                        Bo
           x                        Bp
           y                        Bq
           z                        Br
           0                        Bs
           1                        Bt
           2                        Bu
           3                        Bv
           4                        Bw
           5                        Bx
           6                        C0
           7                        C1
           8                        C2
           9                        C3

4bp7-pdb-bundle3.pdb:
           A                        C4
           B                        C5
           C                        C6
           D                        C7
           E                        C8
           F                        C9
           G                        CA
           H                        CB
           I                        CC
           J                        CD
           K                        CE
           L                        CF
           M                        CG
           N                        CH
           O                        CI
           P                        CJ
           Q                        CK
           R                        CL
           S                        CM
           T                        CN
           U                        CO
           V                        CP
           W                        CQ
           X                        CR
           Y                        CS
           Z                        CT
           a                        CU
           b                        CV
           c                        CW
           d                        CX
           e                        CY
           f                        CZ
           g                        Ca
           h                        Cb
           i                        Cc
           j                        Cd
           k                        Ce
           l                        Cf
           m                        Cg
           n                        Ch
           o                        Ci
           p                        Cj
           q                        Ck
           r                        Cl
           s                        Cm
           t                        Cn
           u                        Co
           v                        Cp
           w                        Cq
           x                        Cr
           y                        Cs
           z                        Ct
           0                        Cu
           1                        Cv
           2                        Cw
           3                        Cx
