    New chain ID            Original chain ID

4uft_1-pdb-bundle1.pdb:
           A                        B1
           B                        B2
           C                        B3
           D                        B4
           E                        B5
           F                        B6
           G                        B7
           H                        B8
           I                        B9
           J                       B10
           K                       B11
           L                       B12
           M                       B13
           N                       B14
           O                       B15
           P                       B16
           Q                       B17
           R                       B18
           S                       B19
           T                       B20
           U                       B21
           V                       B22
           W                       B23
           X                       B24
           Y                       B25
           Z                       B26
           a                       B27
           b                       B28
           c                       B29
           d                       B30
           e                       B31
           f                       B32
           g                       B33
           h                       B34
4uft_1-pdb-bundle2.pdb:
           A                       B34
           B                       B35
           C                       B36
           D                       B37
           E                       B38
           F                       B39
