    New chain ID            Original chain ID

7z49-pdb-bundle1.pdb:
           A                        AA
           B                        AB
           C                        AC
           D                        AD
           E                        AE
           F                        AF
           G                        AG
           H                        AH
           I                        AI
           J                        AJ
           K                        AK
           L                        AL
           M                        AM
           N                        AN
           O                        AO
           P                        AP
           Q                        AQ
           R                        AR
           S                        AS
           T                        AT
           U                        AU
           V                        AV
           W                        AW
           X                        AX
           Y                        AY
           Z                        AZ
           a                        BA
           b                        BB
           c                        BC
           d                        BD
           e                        BE
           f                        BF
           g                        BG
           h                        BH
           i                        BI
           j                        BJ
           k                        BK

7z49-pdb-bundle2.pdb:
           A                        BL
           B                        BM
           C                        BN
           D                        BO
           E                        BP
           F                        BQ
           G                        BR
           H                        BS
           I                        BT
           J                        BU
           K                        BV
           L                        BW
           M                        BX
           N                        BY
           O                        BZ
           P                        CA
           Q                        CB
           R                        CC
           S                        CD
           T                        CE
           U                        CF
           V                        CG
           W                        CH
           X                        CI
           Y                        CJ
           Z                        CK
           a                        CL
           b                        CM
           c                        CN
           d                        CO
           e                        CP
           f                        CQ
           g                        CR
           h                        CS
           i                        CT
           j                        CU
           k                        CV

7z49-pdb-bundle3.pdb:
           A                        CW
           B                        CX
           C                        CY
           D                        CZ
           E                        DA
           F                        DB
           G                        DC
           H                        DD
           I                        DE
           J                        DF
           K                        DG
           L                        DH
           M                        DI
           N                        DJ
           O                        DK
           P                        DL
           Q                        DM
           R                        DN
           S                        DO
           T                        DP
           U                        DQ
