    New chain ID            Original chain ID

8fkr-pdb-bundle1.pdb:
           A                        BA
           B                        L1
           C                        L2
           D                        L3
           E                        L6
           F                        L7
           G                        L8
           H                        L9
           I                        LA
           J                        LB
           K                        LC
           L                        LE
           M                        LG
           N                        LH
           O                        LI
           P                        LK
           Q                        LN
           R                        LQ
           S                        LS
           T                        LT
           U                        LU
           V                        LW
           W                        NB
           X                        NE
           Y                        NF
           Z                        NG
           a                        NM
           b                        NN
           c                        NO
           d                        NQ
           e                        NS
           f                        SA
           g                        SC
           h                        SD
           i                        SE
           j                        SG
           k                        SH
           l                        SI
           m                        SJ
           n                        SK
           o                        SL
           p                        SM

8fkr-pdb-bundle2.pdb:
           A                        SN
           B                        SO
           C                        SQ
           D                        SR
           E                        SS
           F                        ST
           G                        SV
           H                        SW
           I                        SZ
