    New chain ID            Original chain ID

4v5h-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                        AV
           W                        AX
           X                        AZ
           Y                        B0
           Z                        B1
           a                        B2
           b                        B3
           c                        B4
           d                        B5
           e                        B6
           f                        B7
           g                        B8
           h                        BA

4v5h-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                        BW
           V                        BY
