    New chain ID            Original chain ID

9rot_1-pdb-bundle1.pdb:
           A                         0
           B                         1
           C                         3
           D                         B
           E                         C
           F                         E
           G                         F
           H                         H
           I                         I
           J                         K
           K                         L
           L                         M
           M                         N
           N                         O
           O                         P
           P                         Q
           Q                         R
           R                         S
           S                         T
           T                         U
           U                         W
           V                         X
           W                         Y
           X                         Z
           Y                         D
           Z                         G
           a                         J
           b                         V
           c                         4
           d                         b
           e                         7
9rot_1-pdb-bundle2.pdb:
           A                         7
           B                         a
