    New chain ID            Original chain ID

6gb2-pdb-bundle1.pdb:
           A                        CL
           B                        DL
           C                        EL
           D                        FL
           E                        GL
           F                        HL
           G                        B0
           H                        B1
           I                        B2
           J                        B3
           K                        B4
           L                        B5
           M                        B6
           N                        B7
           O                        B8
           P                        B9
           Q                        BA
           R                        BB
           S                        BC
           T                        BD
           U                        BE
           V                        BF
           W                        BI
           X                        BJ
           Y                        BK
           Z                        BL
           a                        BN
           b                        BO
           c                        BP
           d                        BQ
           e                        BR
           f                        BS
           g                        BT
           h                        BU
           i                        BV
           j                        BW
           k                        BX
           l                        BY
           m                        Ba
           n                        Bb
           o                        Bc
           p                        Bd
           q                        Be
           r                        Bf
           s                        Bg
           t                        Bh
           u                        Bi
           v                        Bj
           w                        Bk
           x                        Bl
           y                        Bm
           z                        Bn

6gb2-pdb-bundle2.pdb:
           A                        Bo
           B                        Bp
           C                        Bq
           D                        Bt
           E                        Bu
           F                        Bv
           G                        Bw
           H                        Bx
           I                        Bz
           J                        AV
