    New chain ID            Original chain ID

4v50-pdb-bundle1.pdb:
           A                        AA
           B                        AW
           C                        AX
           D                        AB
           E                        AC
           F                        AD
           G                        AE
           H                        AF
           I                        AG
           J                        AH
           K                        AI
           L                        AJ
           M                        AK
           N                        AL
           O                        AM
           P                        AN
           Q                        AO
           R                        AP
           S                        AQ
           T                        AR
           U                        AS
           V                        AT
           W                        AU
           X                        BA

4v50-pdb-bundle2.pdb:
           A                        BB
           B                        BC
           C                        BD
           D                        BE
           E                        BF
           F                        BG
           G                        BH
           H                        BI
           I                        BJ
           J                        BK
           K                        BL
           L                        BM
           M                        BN
           N                        BO
           O                        BP
           P                        BQ
           Q                        BR
           R                        BS
           S                        BT
           T                        BU
           U                        BV
           V                        BW
           W                        BX
           X                        BY
           Y                        BZ
           Z                        B0
           a                        B1
           b                        B2
           c                        B3
           d                        B4

4v50-pdb-bundle3.pdb:
           A                        CA
           B                        CW
           C                        CX
           D                        CB
           E                        CC
           F                        CD
           G                        CE
           H                        CF
           I                        CG
           J                        CH
           K                        CI
           L                        CJ
           M                        CK
           N                        CL
           O                        CM
           P                        CN
           Q                        CO
           R                        CP
           S                        CQ
           T                        CR
           U                        CS
           V                        CT
           W                        CU
           X                        DA

4v50-pdb-bundle4.pdb:
           A                        DB
           B                        DC
           C                        DD
           D                        DE
           E                        DF
           F                        DG
           G                        DH
           H                        DI
           I                        DJ
           J                        DK
           K                        DL
           L                        DM
           M                        DN
           N                        DO
           O                        DP
           P                        DQ
           Q                        DR
           R                        DS
           S                        DT
           T                        DU
           U                        DV
           V                        DW
           W                        DX
           X                        DY
           Y                        DZ
           Z                        D0
           a                        D1
           b                        D2
           c                        D3
           d                        D4
