    New chain ID            Original chain ID

9yee-pdb-bundle1.pdb:
           A                        Ba
           B                        Bb
           C                        Bc
           D                        Bd
           E                        Be
           F                        Bf
           G                        Bg
           H                        Bh
           I                        Bi
           J                        Bj
           K                        Bk
           L                        Bl
           M                        Bm
           N                        Bn
           O                        Bo
           P                        Bp
           Q                        Bq
           R                        Br
           S                        Bs
           T                        Bt
           U                        Bu
           V                        Bv
           W                        Bw
           X                        Bx
           Y                        By
           Z                        Bz
           a                        Ca
           b                        Cb
           c                        Cc
           d                        Cd
           e                        Ce
           f                        Cf
           g                        Cg
           h                        Ch
           i                        Ci
           j                        Cj
           k                        Ck
           l                        Cl
           m                        Cm
           n                        Cn
           o                        Co
           p                        Cp
           q                        Cq
           r                        Cr
           s                        Cs
           t                        Ct
           u                        Cu
           v                        Cv
           w                        Cw
