    New chain ID            Original chain ID

9yd0_1-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           G                         G
9yd0_1-pdb-bundle2.pdb:
           A                         G
           B                         H
           C                         I
           D                         J
           E                         K
           F                         L
           G                         M
           H                         P
           I                         Q
           J                         R
           K                         S
           L                         U
           M                         V
