    New chain ID            Original chain ID

4v9m-pdb-bundle1.pdb:
           A                        AB
           B                        AC
           C                        AD
           D                        AE
           E                        AF
           F                        AG
           G                        AH
           H                        AI
           I                        AJ
           J                        AK
           K                        AL
           L                        AM
           M                        AN
           N                        AO
           O                        AP
           P                        AQ
           Q                        AR
           R                        AS
           S                        AT
           T                        AA
           U                        AW
           V                        AV
           W                        AY
           X                        BC
           Y                        BD
           Z                        BE
           a                        BF
           b                        BG
           c                        BH
           d                        BJ
           e                        BK
           f                        BN
           g                        BO
           h                        BP
           i                        BQ
           j                        BR
           k                        BS
           l                        BT
           m                        BU
           n                        BV
           o                        BW
           p                        BX
           q                        BY
           r                        BZ
           s                        B0
           t                        B2
           u                        B3
           v                        B5
           w                        B6
           x                        B7
           y                        B8
           z                        B9
           0                        Be
           1                        Bf
           2                        Bg
           3                        Bh
           4                        B1
           5                        B4

4v9m-pdb-bundle2.pdb:
           A                        BA
           B                        BB
           C                        CB
           D                        CC
           E                        CD
           F                        CE
           G                        CF
           H                        CG
           I                        CH
           J                        CI
           K                        CJ
           L                        CK
           M                        CL
           N                        CM
           O                        CN
           P                        CO
           Q                        CP
           R                        CQ
           S                        CR
           T                        CS
           U                        CT

4v9m-pdb-bundle3.pdb:
           A                        CA
           B                        CW
           C                        CV
           D                        CY
           E                        DC
           F                        DD
           G                        DE
           H                        DF
           I                        DG
           J                        DH
           K                        DJ
           L                        DK
           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                        D2
           b                        D3
           c                        D5
           d                        D6
           e                        D7
           f                        D8
           g                        D9
           h                        De
           i                        Df
           j                        Dg
           k                        Dh
           l                        D1
           m                        D4

4v9m-pdb-bundle4.pdb:
           A                        DA
           B                        DB
