    New chain ID            Original chain ID

29iz_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                        Ah
           i                        Ai
           j                        Aj
           k                        BD
           l                        CA
           m                        CB
           n                        CC
29iz_1-pdb-bundle2.pdb:
           A                        CC
           B                        CD
           C                        ER
           D                        GF
           E                        HC
           F                        HF
           G                        HI
           H                        HJ
           I                        HM
           J                        HS
           K                         A
           L                        HY
           M                        Hb
           N                        HD
           O                        HH
           P                        HK
           Q                        HO
           R                        HP
           S                        HX
           T                        HZ
           U                        Hc
           V                        Hf
           W                         B
           X                        HE
           Y                        HG
           Z                        HL
           a                        HQ
           b                        HR
           c                        HT
           d                        HU
           e                        HV
           f                        Hd
           g                        He
           h                        HN
           i                        Ha
           j                        Hg
           k                        Hh
