    New chain ID            Original chain ID

8fkt-pdb-bundle1.pdb:
           A                        BA
           B                        BB
           C                        L1
           D                        L2
           E                        L3
           F                        L6
           G                        L7
           H                        L8
           I                        L9
           J                        LA
           K                        LB
           L                        LC
           M                        LE
           N                        LG
           O                        LH
           P                        LI
           Q                        LK
           R                        LN
           S                        LQ
           T                        LS
           U                        LT
           V                        LU
           W                        LW
           X                        NB
           Y                        NF
           Z                        NH
           a                        NI
           b                        NK
           c                        NM
           d                        NO
           e                        NQ
           f                        NS
           g                        SA
           h                        SC
           i                        SD

8fkt-pdb-bundle2.pdb:
           A                        SE
           B                        SG
           C                        SH
           D                        SI
           E                        SJ
           F                        SK
           G                        SL
           H                        SM
           I                        SN
           J                        SO
           K                        SQ
           L                        SR
           M                        SS
           N                        ST
           O                        SV
           P                        SW
           Q                        SY
           R                        SZ
