    New chain ID            Original chain ID

8fkv-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                        LP
           T                        LQ
           U                        LS
           V                        LT
           W                        LU
           X                        LW
           Y                        NA
           Z                        NB
           a                        NF
           b                        NH
           c                        NI
           d                        NK
           e                        NM
           f                        NO
           g                        NQ

8fkv-pdb-bundle2.pdb:
           A                        NS
           B                        SA
           C                        SC
           D                        SD
           E                        SE
           F                        SG
           G                        SH
           H                        SI
           I                        SJ
           J                        SK
           K                        SL
           L                        SM
           M                        SN
           N                        SO
           O                        SQ
           P                        SR
           Q                        SS
           R                        ST
           S                        SU
           T                        SV
           U                        SW
           V                        SY
           W                        SZ
