    New chain ID            Original chain ID

9qer-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                        LB
           N                        LC
           O                        LD
           P                        LE
           Q                        LF
           R                        LG
           S                        LH
           T                        LJ
           U                        LL
           V                        LM
           W                        LN
           X                        LO
           Y                        LP
           Z                        LQ
           a                        LS
           b                        LT
           c                        LV
           d                        LY
           e                        La
           f                        Ld
           g                        Le
           h                        Lf
           i                        Lh
           j                        Li
           k                        Lr
           l                        Lt
           m                        L8

9qer-pdb-bundle2.pdb:
           A                        L5
