    New chain ID            Original chain ID

4v5x-pdb-bundle1.pdb:
           A                        AA

4v5x-pdb-bundle2.pdb:
           A                        BA
           B                        A0
           C                        A1
           D                        A2
           E                        A3
           F                        A4
           G                        A5
           H                        A6
           I                        A7
           J                        A8
           K                        AB
           L                        AC
           M                        AD
           N                        AE
           O                        AF
           P                        AG
           Q                        AH
           R                        AI
           S                        AJ
           T                        AK
           U                        AL
           V                        AM
           W                        AN
           X                        AO
           Y                        AP
           Z                        AQ
           a                        AR
           b                        AS
           c                        AT
           d                        AU
           e                        AV
           f                        AW
           g                        AX
           h                        AY
           i                        AZ
           j                        Ab
           k                        Ac
           l                        Ad
           m                        Af
           n                        Ag
           o                        Ah
           p                        Ai
           q                        Aj
           r                        Ak
           s                        Al
           t                        Am
           u                        An
           v                        Ao
           w                        As
           x                        Au
           y                        Av
           z                        Aw
           0                        Ax
           1                        Ay
           2                        Az
           3                        B0

4v5x-pdb-bundle3.pdb:
           A                        B1
           B                        B2
           C                        B3
           D                        B4
           E                        B5
           F                        B6
           G                        B7
           H                        B8
           I                        B9
           J                        BB
           K                        BC
           L                        BD
           M                        BE
           N                        BF
           O                        BG
           P                        BH
           Q                        BI
           R                        BJ
           S                        BK
           T                        BL
           U                        BM
           V                        BN
           W                        BO
           X                        BP
           Y                        BQ
           Z                        BR
           a                        BS
           b                        BT
           c                        BU
           d                        BV
           e                        BW
           f                        BX
           g                        BY
           h                        BZ
           i                        Ba
           j                        Bb
           k                        Bc
           l                        Bd
           m                        Be
           n                        Bf
           o                        Bg
           p                        Bh
           q                        Bi
           r                        Bj
           s                        Bk
           t                        Bl
           u                        Bm
           v                        Bn
           w                        Bo
           x                        Bp
           y                        Bq
           z                        Br
           0                        Bs
           1                        C0
           2                        C1
           3                        C2
           4                        C3
           5                        C4
           6                        C5
           7                        C6
           8                        C7
           9                        C8

4v5x-pdb-bundle4.pdb:
           A                        CB
           B                        CC
           C                        CD
           D                        CE
           E                        CF
           F                        CG
           G                        CH
           H                        CI
           I                        CJ
           J                        CK
           K                        CL
           L                        CM
           M                        CN
           N                        CO
           O                        CP
           P                        CQ
           Q                        CR
           R                        CS
           S                        CT
           T                        CU
           U                        CV
           V                        CW
           W                        CX
           X                        CY
           Y                        CZ
           Z                        Cb
           a                        Cc
           b                        Cd
           c                        Ce
           d                        Cf
           e                        Cg
           f                        Ch
           g                        Ck
           h                        Cp
           i                        Cq
           j                        Cr
           k                        Cs
           l                        Ct
           m                        Cu
           n                        Cv
           o                        Cw
           p                        Cx
           q                        Cy
           r                        Cz
