    New chain ID            Original chain ID

7nsj-pdb-bundle1.pdb:
           A                        B0
           B                        B1
           C                        B2
           D                        B3
           E                        B4
           F                        B5
           G                        B6
           H                        BB
           I                        B7
           J                        BD
           K                        BE
           L                        BF
           M                        BI
           N                        BJ
           O                        BK
           P                        BN
           Q                        BO
           R                        BP
           S                        BQ
           T                        BR
           U                        BS
           V                        BT
           W                        BU
           X                        BV
           Y                        BW
           Z                        BX
           a                        BY
           b                        Ba
           c                        Bb
           d                        Bc
           e                        Bd
           f                        Be
           g                        Bf
           h                        Bg
           i                        Bh
           j                        B8
           k                        Bi
           l                        Bj
           m                        Bk
           n                        Bl
           o                        Bm
           p                        Bn
           q                        Bo
           r                        Bp
           s                        Bq
           t                        Bt
           u                        Bu
           v                        Bv
           w                        Bw
           x                        Bx
           y                        AA
           z                        B9

7nsj-pdb-bundle2.pdb:
           A                        BA
           B                        AB
           C                        AC
           D                        AE
           E                        AF
           F                        AG
           G                        AI
           H                        AJ
           I                        AK
           J                        AL
           K                        AN
           L                        AO
           M                        AP
           N                        AQ
           O                        AR
           P                        AU
           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                        Am
           d                        An
           e                        Ao
           f                        Ap
           g                        CL
           h                        DL
           i                        EL
           j                        FL
           k                        GL
           l                        HL
           m                        AV
           n                        AX
           o                        AY
