    New chain ID            Original chain ID

9t97-pdb-bundle1.pdb:
           A                       A3a
           B                       A3b
           C                       A3c
           D                       A3d
           E                       A3f
           F                       A3g
           G                       A3i
           H                       D4a
           I                       D4b
           J                       D5a
           K                       D5b
           L                       D5c
           M                       D5d
           N                       E5a
           O                       E5b
