    New chain ID            Original chain ID

9bym-pdb-bundle1.pdb:
           A                         A
           C                         C
           D                         D
           E                         E
           F                         F
           J                         J
           G                         G
           H                         H
           I                         I
           K                         K
           L                         L
           N                         N
           O                         O
           P                         P
           Q                         Q
           R                         R
           M                         M
           B                         B
