    New chain ID            Original chain ID

31fz_1-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                        AW
           X                        AX
           Y                        AY
           Z                        AZ
           a                        Aa
           b                        Ab
           c                        Ac
           d                        Ad
           e                        Ae
           f                        Af
           g                        Ag
           h                        BA
           i                        BB
           j                        BE
           k                        BH
           l                        BJ
           m                        BK
           n                        BL
           o                        BM
           p                        BN
31fz_1-pdb-bundle2.pdb:
           A                        BN
           B                        BO
           C                        BP
           D                        BT
           E                        BX
           F                        Bc
           G                        Bf
           H                        BD
           I                        BF
           J                        BG
           K                        BI
           L                        BQ
           M                        BR
           N                        BS
           O                        BU
           P                        BV
           Q                        BW
           R                        BY
           S                        BZ
           T                        Ba
           U                        Bb
           V                        Bd
           W                        Bg
           X                        Bh
           Y                        CA
           Z                        CB
           a                        CC
           b                        CD
           c                        CE
           d                        CF
           e                        CG
           f                        CH
