    New chain ID            Original chain ID

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

9hqc-pdb-bundle2.pdb:
           A                        BB
           B                        DB
           C                        FB
           D                        GB
           E                        HB
