    New chain ID            Original chain ID

8pv4-pdb-bundle1.pdb:
           A                        C1
           B                        C2
           C                        C3
           D                        C4
           E                        CB
           F                        CF
           G                        CH
           H                        CI
           I                        CJ
           J                        CK
           K                        CL
           L                        CM
           M                        CN
           N                        CO
           O                        CQ
           P                        CS

8pv4-pdb-bundle2.pdb:
           A                        CT
           B                        CU
           C                        CV
           D                        CW
           E                        Cb
           F                        Cd
           G                        Ce
           H                        Cf
           I                        Cg
           J                        Ch
           K                        Cz
           L                        LA
           M                        LB
           N                        LC
           O                        LD
           P                        LE
           Q                        LF
           R                        LG
           S                        LH
           T                        LJ
           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                        La
           k                        Lc
           l                        Ld
           m                        Le
           n                        Lf
           o                        Lg
           p                        Lh
           q                        Li
           r                        Lj
           s                        Lk
           t                        Ll
           u                        Lp
           v                        Lq
           w                        Lr
           x                        CR
