    New chain ID            Original chain ID

9qiw-pdb-bundle1.pdb:
           A                        CA
           B                        CB
           C                        CC
           D                        CD
           E                        CE
           F                        CF
           G                        CG
           H                        CH
           I                        CI
           J                        CJ
           K                        CK
           L                        L7
           M                        LA
           N                        LB
           O                        LC
           P                        LD
           Q                        LE
           R                        LF
           S                        LG
           T                        LH
           U                        LJ
           V                        LL
           W                        LM
           X                        LN
           Y                        LO
           Z                        LP
           a                        LQ
           b                        LR
           c                        LS
           d                        LT
           e                        LU
           f                        LV
           g                        LX
           h                        LY
           i                        LZ
           j                        La
           k                        Lc
           l                        Ld
           m                        Le
           n                        Lf
           o                        Lg
           p                        Lh
           q                        Li
           r                        Lj
           s                        Lk
           t                        Ll
           u                        Lp
           v                        Lr
           w                        Lt

9qiw-pdb-bundle2.pdb:
           A                        L5
           B                        L8
