    New chain ID            Original chain ID

3jc9-pdb-bundle1.pdb:
           A                        Aa
           B                        Ab
           C                        Ac
           D                        Ad
           E                        Ae
           F                        Ca
           G                        Cb
           H                        Na
           I                        Oa
           J                        Ma
           K                        Nb
           L                        Ob
           M                        Mb
           N                        Nc
           O                        Oc
           P                        Mc
           Q                        Nd
           R                        Od
           S                        Md
           T                        Ne
           U                        Oe
           V                        Me
           W                        Nf
           X                        Of
           Y                        Mf
           Z                        Ng
           a                        Og
           b                        Mg
           c                        Nh
           d                        Oh
           e                        Mh
           f                        Ni
           g                        Oi
           h                        Mi
           i                        Nj
           j                        Oj
           k                        Mj
           l                        Nk
           m                        Ok
           n                        Mk
           o                        Nl
           p                        Ol
           q                        Ml
           r                        Qa
           s                        Pa
           t                        Qb
           u                        Pb
           v                        Qc
           w                        Pc
           x                        Qd
           y                        Pd
           z                        Qe
           0                        Pe
           1                        Qf
           2                        Pf
           3                        Qg
           4                        Pg
           5                        Qh
           6                        Ph
           7                        Qi
           8                        Pi
           9                        Qj

3jc9-pdb-bundle2.pdb:
           A                        Pj
           B                        Qk
           C                        Pk
           D                        Ql
           E                        Pl
           F                        Ta
           G                        Tb
           H                        Tc
           I                        Td
           J                        Te
           K                        Tf
           L                        Tg
           M                        Th
           N                        Ti
           O                        Tj
           P                        Tk
           Q                        Tl
