    New chain ID            Original chain ID

5it7_1-pdb-bundle1.pdb:
           A                        AA
           B                        BB
           C                        CC
           D                        DD
           E                        EE
           F                        FF
           G                        GG
           H                        HH
           I                        II
           J                        JJ
           K                        LL
           L                        MM
           M                        NN
           N                        OO
           O                        PP
           P                        QQ
           Q                        RR
           R                        SS
           S                        TT
           T                        UU
           U                        VV
           V                        WW
           W                        XX
           X                        YY
           Y                        ZZ
           Z                        aa
           a                        bb
           b                        cc
           c                        dd
           d                        ee
           e                        ff
           f                        gg
           g                        hh
           h                        ii
           i                        jj
           j                        kk
           k                        ll
           l                        mm
           m                        oo
           n                        pp
           o                        qq
           p                        rr
           q                        KK
           r                         A
           s                         B
           t                         C
           u                         D
           v                         E
           w                         F
           x                         G
           y                         H
           z                         I
           0                         J
           1                         K
           2                         L
           3                         M
           4                         N
           5                         O
           6                         P
           7                         Q
           8                         R
           9                         S
5it7_1-pdb-bundle2.pdb:
           A                         T
           B                         U
           C                         V
           D                         W
           E                         X
           F                         Y
           G                         Z
           H                         a
           I                         b
           J                         c
           K                         d
           L                         e
           M                         f
           N                         g
           O                         1
