    New chain ID            Original chain ID

9ou7-pdb-bundle1.pdb:
           A                        BA
           B                        BB
           C                        BC
           D                        BD

9ou7-pdb-bundle2.pdb:
           A                        BE
           B                        BF
           C                        BG
           D                        BH
           E                        BI
           F                        BJ
           G                        BK
           H                        BL
           I                        BM
           J                        BN
           K                        BO
           L                        BP
           M                        BQ
           N                        BR
           O                        BS
           P                        BT
           Q                        BU
           R                        BV
           S                        BW
           T                        BX
           U                        BY
           V                        BZ
           W                        Ba
           X                        Bb
           Y                        Bc
           Z                        Bd
           a                        Be
           b                        Bf

9ou7-pdb-bundle3.pdb:
           A                        CA
           B                        CB
           C                        CC
           D                        CD

9ou7-pdb-bundle4.pdb:
           A                        CE
           B                        CF
           C                        CG
           D                        CH
           E                        CI
           F                        CJ
           G                        CK
           H                        CL
           I                        CM
           J                        CN
           K                        CO
           L                        CP
           M                        CQ
           N                        CR
           O                        CS
           P                        CT
           Q                        CU
           R                        CV
           S                        CW
           T                        CX
           U                        CY
           V                        CZ
           W                        Ca
           X                        Cb
           Y                        Cc
           Z                        Cd
           a                        Ce
           b                        Cf
           c                        DA
           d                        DB
           e                        DC
           f                        DD
