    New chain ID            Original chain ID

9ngy-pdb-bundle1.pdb:
           A                       AP1
           B                       BP1
           C                       CP1
           D                       DP1
           E                       EP1
           F                       FP1
           G                       GP1
           H                       HP1
           I                       IP1
           J                       JP1
           K                       KP1
           L                       LP1
           M                       MP1
           N                       NP1
           O                       OP1
