    New chain ID            Original chain ID

9got-pdb-bundle1.pdb:
           A                         A
           B                         D
           C                         E
           D                         G
           E                         H
           F                         I
           G                         K
           H                         L
           I                         M
           J                         N
           K                         O
           L                         P
           M                         Q
           N                         R
           O                         S
           P                         T
           Q                         U
           R                         V
           S                         W
           T                         X
           U                        BA
           V                        CA
           W                        DA
           X                        EA
           Y                        FA
           Z                        GA
           a                        HA
           b                        IA
           c                        JA
           d                        KA
           e                        LA
           f                        MA
           g                        NA
           h                        OA
           i                        PA
           j                        SA
           k                        TA
           l                        UA
           m                        VA
           n                        WA
           o                        XA
           p                        YA
           q                        ZA
           r                        AB
           s                        DB
           t                        FB
           u                        GB
           v                        HB
