    New chain ID            Original chain ID

8i9z-pdb-bundle1.pdb:
           A                        C1
           B                        C2
           C                        CA
           D                        CB
           E                        CC
           F                        CD
           G                        CE
           H                        CF
           I                        CG
           J                        CH
           K                        CI
           L                        CJ
           M                        CK
           N                        CL

8i9z-pdb-bundle2.pdb:
           A                        CM
           B                        CN
           C                        CO
           D                        CP
           E                        CQ
           F                        CR
           G                        CS
           H                        CT
           I                        CU
           J                        CV
           K                        CW
           L                        CX
           M                        CY
           N                        Cz
           O                        LB
           P                        LC
           Q                        LE
           R                        LF
           S                        LG
           T                        LH
           U                        LK
           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                        Lc
           k                        Ld
           l                        Le
           m                        Lf
           n                        Lg
           o                        Lh
           p                        Li
           q                        Lj
           r                        Lk
           s                        Ll
           t                        Lq
