    New chain ID            Original chain ID

9h51_1-pdb-bundle1.pdb:
           A                         c
           B                         B
           C                         D
           D                         E
           E                         I
           F                         J
           G                         L
           H                         M
           I                         N
           J                         O
           K                         P
           L                         Q
           M                         R
           N                         S
           O                         T
           P                         U
           Q                         V
           R                         W
           S                         0
           T                         3
           U                         b
           V                         a
           W                         4
           X                         H
           Y                         1
           Z                         Z
           a                         X
           b                         K
           c                         Y
           d                         G
           e                         F
9h51_1-pdb-bundle2.pdb:
           A                         F
           B                         C
