    New chain ID            Original chain ID

4v7x-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                        B0
           W                        B1
           X                        B2
           Y                        B3
           Z                        B4
           a                        B5
           b                        B6
           c                        B7
           d                        B8

4v7x-pdb-bundle2.pdb:
           A                        BA
           B                        BB
           C                        BD
           D                        BE
           E                        BF
           F                        BG
           G                        BH
           H                        BI
           I                        BN
           J                        BO
           K                        BP
           L                        BQ
           M                        BR
           N                        BS
           O                        BT
           P                        BU
           Q                        BV
           R                        BW
           S                        BX
           T                        BY
           U                        BZ

4v7x-pdb-bundle3.pdb:
           A                        CA
           B                        CB
           C                        CC
           D                        CD
           E                        CE
           F                        CF
           G                        CG
           H                        CH
           I                        CI
           J                        CJ
           K                        CK
           L                        CL
           M                        CM
           N                        CN
           O                        CO
           P                        CP
           Q                        CQ
           R                        CR
           S                        CS
           T                        CT
           U                        CU
           V                        D0
           W                        D1
           X                        D2
           Y                        D3
           Z                        D4
           a                        D5
           b                        D6
           c                        D7
           d                        D8

4v7x-pdb-bundle4.pdb:
           A                        DA
           B                        DB
           C                        DD
           D                        DE
           E                        DF
           F                        DG
           G                        DH
           H                        DI
           I                        DN
           J                        DO
           K                        DP
           L                        DQ
           M                        DR
           N                        DS
           O                        DT
           P                        DU
           Q                        DV
           R                        DW
           S                        DX
           T                        DY
           U                        DZ
