    New chain ID            Original chain ID

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

9kkf-pdb-bundle2.pdb:
           A                        3h
           B                        3d
           C                        3k
           D                        3l
