    New chain ID            Original chain ID

8fl7-pdb-bundle1.pdb:
           A                        BA
           B                        L1
           C                        L3
           D                        L4
           E                        L5
           F                        L6
           G                        L7
           H                        L8
           I                        L9
           J                        LA
           K                        LB
           L                        LC
           M                        LD
           N                        LE
           O                        LF
           P                        LG
           Q                        LH
           R                        LI
           S                        LJ

8fl7-pdb-bundle2.pdb:
           A                        LK
           B                        LL
           C                        LM
           D                        LN
           E                        LO
           F                        LP
           G                        LQ
           H                        LR
           I                        LS
           J                        LT
           K                        LU
           L                        LV
           M                        LW
           N                        LX
           O                        LY
           P                        LZ
           Q                        NC
           R                        NF
           S                        NK
           T                        NL
           U                        NP
           V                        SA
           W                        SB
           X                        SC
           Y                        SD
           Z                        SE
           a                        SF
           b                        SG
           c                        SH
           d                        SI
           e                        SK
           f                        SM
           g                        SQ
           h                        SR
           i                        SV
