    New chain ID            Original chain ID

9sjb-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           G                         G
           H                         H
           I                         I
           J                         J
           K                         K
           L                         L
           M                        LL
           N                         M
           O                         N
           P                         O
           Q                         P
           R                         Q
           S                         R
           T                         S
           U                         T
           V                         V
           W                         W
           X                         X
           Y                         Y
           Z                         Z
           a                        YY
           b                        ZZ
           c                        AA
           d                        BB
           e                        CC
           f                        EE
           g                        FF
           h                        GG
