    New chain ID            Original chain ID

6gz3-pdb-bundle1.pdb:
           A                        A2
           B                        Bv
           C                        Bx
           D                        Bw

6gz3-pdb-bundle2.pdb:
           A                        B1
           B                        BD
           C                        BF
           D                        BK
           E                        BM
           F                        BP
           G                        BQ
           H                        BR
           I                        BS
           J                        BT
           K                        BU
           L                        BZ
           M                        Bc
           N                        Bd
           O                        Bf
           P                        Bg
           Q                        BA
           R                        BB
           S                        BC
           T                        BE
           U                        BG
           V                        BH
           W                        BI
           X                        BJ
           Y                        BL
           Z                        BN
           a                        BO
           b                        BV
           c                        BW
           d                        BX
           e                        BY
           f                        Ba
           g                        Bb
           h                        Be
           i                        A3
           j                        A4
           k                        AA
           l                        AB
           m                        AC
           n                        AD
           o                        AE
           p                        AF
           q                        AG
           r                        AH

6gz3-pdb-bundle3.pdb:
           A                        AI
           B                        AJ
           C                        AL
           D                        AM
           E                        AN
           F                        AO
           G                        AP
           H                        AQ
           I                        AR
           J                        AS
           K                        AT
           L                        AU
           M                        AV
           N                        AW
           O                        AX
           P                        AY
           Q                        AZ
           R                        Aa
           S                        Ab
           T                        Ac
           U                        Ad
           V                        Ae
           W                        Af
           X                        Ag
           Y                        Ah
           Z                        Ai
           a                        Aj
           b                        Ak
           c                        Al
           d                        Am
           e                        An
           f                        Ao
           g                        Ap
           h                        At
           i                        Au
           j                        Aq
           k                        AK
           l                        Ct
