    New chain ID            Original chain ID

7zts-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
           l                        BL

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

7zts-pdb-bundle3.pdb:
           A                        CZ
           B                        DA
           C                        DB
           D                        DC
           E                        DD
           F                        DE
           G                        DF
           H                        DG
           I                        DH
           J                        DI
           K                        DJ
           L                        DK
           M                        DL
           N                        DM
           O                        DN
           P                        DO
           Q                        DP
           R                        DQ
           S                        DR
           T                        DS
           U                        DT
           V                        DU
           W                        DV
           X                        DW
           Y                        DX
           Z                        DY
           a                        DZ
           b                        EA
           c                        EB
           d                        EC
           e                        ED
           f                        EE
           g                        EF
