    New chain ID            Original chain ID

11ec-pdb-bundle1.pdb:
           A                        AG
           B                        AH
           C                        AI
           D                        AJ
           E                        AK
           F                        AL
           G                        AM
           H                        AN
           I                        AO
           J                        AP
           K                        AQ
           L                        AR
