    New chain ID            Original chain ID

9nl6-pdb-bundle1.pdb:
           A                         1
           B                        13
           C                        14
           D                        15
           E                        16
           F                        17
           G                        18
           H                        19
           I                         2
           J                        20
           K                        21
           L                        22
           M                        23
           N                        24
           O                        25
           P                        27
           Q                        28
           R                        29
           S                         3
           T                        30
           U                        31
           V                        32
           W                        34
           X                        35
           Y                        36
           Z                         4
           a                         5
           b                         6
           c                         9
           d                        R1
           e                        R2

9nl6-pdb-bundle2.pdb:
           A                        R3
           B                         T
           C                         Y
           D                         M
           E                        sb
           F                        sc
           G                        sd
           H                        se
           I                        sf
           J                        sg
           K                        sh
           L                        si
           M                        sj
           N                        sk
           O                        sl
           P                        sm
           Q                        sn
           R                        so
           S                        sp
           T                        sq
           U                        sr
           V                        ss
           W                        st
           X                        su
