    New chain ID            Original chain ID

8pv3-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                        Cb
           Q                        Cd

8pv3-pdb-bundle2.pdb:
           A                        Ce
           B                        Cf
           C                        Cg
           D                        Ch
           E                        Cz
           F                        LA
           G                        LB
           H                        LC
           I                        LD
           J                        LE
           K                        LF
           L                        LG
           M                        LH
           N                        LJ
           O                        LK
           P                        LL
           Q                        LM
           R                        LN
           S                        LO
           T                        LP
           U                        LQ
           V                        LR
           W                        LS
           X                        LT
           Y                        LU
           Z                        LV
           a                        LX
           b                        LY
           c                        LZ
           d                        La
           e                        Lc
           f                        Ld
           g                        Le
           h                        Lf
           i                        Lg
           j                        Lh
           k                        Li
           l                        Lj
           m                        Lk
           n                        Ll
           o                        Lp
           p                        Lq
