    New chain ID            Original chain ID

9kn5-pdb-bundle1.pdb:
           A                        1A
           B                        SA
           C                        SB
           D                        SC
           E                        SD
           F                        SE
           G                        SF
           H                        SG
           I                        SH
           J                        SI
           K                        SJ
           L                        SK
           M                        SL
           N                        Sf
           O                        SN
           P                        SO
           Q                        SP
           R                        SQ
           S                        SR
           T                        SS
           U                        ST
           V                        SU
           W                        SV
           X                        SW
           Y                        SX
           Z                        SY
           a                        SZ
           b                        Sa
           c                        Sb
           d                        Sc
           e                        Sd
           f                        Se
           g                        sh
           h                        Sg
           i                        Ln
           j                        S2
           k                        zz
           l                        3m
           m                        3f
           n                        3a
           o                        3e

9kn5-pdb-bundle2.pdb:
           A                        3c
           B                        3h
           C                        3d
           D                        3k
           E                        3l
