    New chain ID            Original chain ID

5t0c-pdb-bundle1.pdb:
           A                        AU
           B                        AV
           C                        AW
           D                        AX
           E                        AY
           F                        AZ
           G                        Aa
           H                        Ab
           I                        Ac
           J                        Ad
           K                        Ae
           L                        Af
           M                        AA
           N                        AB
           O                        AD
           P                        AE
           Q                        AF
           R                        AC
           S                        AG
           T                        AH
           U                        AI
           V                        AJ
           W                        AK
           X                        AL
           Y                        AM
           Z                        AN
           a                        AO
           b                        AP
           c                        AQ
           d                        AR
           e                        AS
           f                        AT
           g                        BU
           h                        BV
           i                        BW
           j                        BX
           k                        BY

5t0c-pdb-bundle2.pdb:
           A                        BZ
           B                        Ba
           C                        Bb
           D                        Bc
           E                        Bd
           F                        Be
           G                        Bf
           H                        BA
           I                        BB
           J                        BD
           K                        BE
           L                        BF
           M                        BC
           N                        BG
           O                        BH
           P                        BI
           Q                        BJ
           R                        BK
           S                        BL
           T                        BM
           U                        BN
           V                        BO
           W                        BP
           X                        BQ
           Y                        BR
           Z                        BS
           a                        BT
