    New chain ID            Original chain ID

8fkz-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                        LD
           M                        LE
           N                        LF
           O                        LG
           P                        LH
           Q                        LI
           R                        LJ
           S                        LK
           T                        LL
           U                        LN
           V                        LO
           W                        LP
           X                        LQ
           Y                        LR
           Z                        LS
           a                        LT
           b                        LU
           c                        LW
           d                        LX
           e                        LY
           f                        LZ
           g                        NB
           h                        NC
           i                        NF
           j                        NK

8fkz-pdb-bundle2.pdb:
           A                        NL
           B                        SA
           C                        SC
           D                        SD
           E                        SE
           F                        SF
           G                        SG
           H                        SH
           I                        SI
           J                        SK
           K                        SL
           L                        SM
           M                        SQ
           N                        SR
           O                        SV
