    New chain ID            Original chain ID

8jiw-pdb-bundle1.pdb:
           A                        Ad
           B                        BA
           C                        BB
           D                        BC
           E                        BE
           F                        BG
           G                        BH
           H                        BI
           I                        BJ
           J                        BL
           K                        BN
           L                        BO
           M                        BR
           N                        BV
           O                        BW
           P                        BX
           Q                        BY
           R                        Ba
           S                        Bb
           T                        Be
           U                        Cn
           V                        BD
           W                        BF
           X                        BK
           Y                        BP
           Z                        BQ
           a                        BS
           b                        BT
           c                        BU
           d                        Bc
           e                        Bd
           f                        Bg
           g                        BZ
