    New chain ID            Original chain ID

4v6x-pdb-bundle1.pdb:
           A                        Az
           B                        Ag
           C                        AU
           D                        AK
           E                        AO
           F                        AX
           G                        AM
           H                        AS
           I                        Ad
           J                        AN
           K                        AL
           L                        AR
           M                        AP
           N                        AT
           O                        AB
           P                        AA
           Q                        AV
           R                        AY
           S                        AZ
           T                        Aa
           U                        Ab
           V                        Ac
           W                        AD
           X                        Ae
           Y                        Af
           Z                        AJ
           a                        AE
           b                        AC
           c                        AG
           d                        AF
           e                        AH
           f                        AW
           g                        AI
           h                        AQ
           i                        Ah
           j                        B2
           k                        BC
           l                        Cz
           m                        Cq
           n                        CK
           o                        CO
           p                        CL
           q                        CV
           r                        CM
           s                        Ca
           t                        CN

4v6x-pdb-bundle2.pdb:
           A                        CI
           B                        CD
           C                        CQ
           D                        CR
           E                        CA
           F                        CS
           G                        CT
           H                        CP
           I                        CU
           J                        CX
           K                        CY
           L                        CW
           M                        CZ
           N                        Cr
           O                        Ch
           P                        Cb
           Q                        CB
           R                        CF
           S                        Cc
           T                        Cd
           U                        Ce
           V                        Cf
           W                        Cg
           X                        Ci
           Y                        Cj
           Z                        Ck
           a                        Cl
           b                        CC
           c                        Cm
           d                        Cn
           e                        Cp
           f                        Co
           g                        CJ
           h                        CH
           i                        CE
           j                        CG
           k                        Cs
           l                        Ct
           m                        Cu
           n                        Cv

4v6x-pdb-bundle3.pdb:
           A                        A5
           B                        A7
           C                        A8
