    New chain ID            Original chain ID

4v9h-pdb-bundle1.pdb:
           A                        AA
           B                        AV
           C                        AX
           D                        AJ
           E                        AK
           F                        AL
           G                        AM
           H                        AN
           I                        AO
           J                        AP
           K                        AQ
           L                        AR
           M                        AS
           N                        AT
           O                        AB
           P                        AC
           Q                        AD
           R                        AE
           S                        AF
           T                        AG
           U                        AH
           V                        AI
           W                        AY
           X                        AU

4v9h-pdb-bundle2.pdb:
           A                        BA
           B                        BB
           C                        BN
           D                        BO
           E                        BP
           F                        BQ
           G                        BR
           H                        BS
           I                        BT
           J                        BU
           K                        BV
           L                        BW
           M                        BX
           N                        BY
           O                        BZ
           P                        B0
           Q                        B1
           R                        B2
           S                        BD
           T                        B3
           U                        B4
           V                        B5
           W                        B6
           X                        B7
           Y                        B8
           Z                        B9
           a                        BC
           b                        BE
           c                        BF
           d                        BG
           e                        BH
           f                        BK
           g                        BJ
           h                        BL
