    New chain ID            Original chain ID

9n6z-pdb-bundle1.pdb:
           A                        L0
           B                        L1
           C                        L2
           D                        L3
           E                        L4
           F                        L5
           G                        L6
           H                        L7
           I                        L8
           J                        L9
           K                        LC
           L                        LD
           M                        LE
           N                        LF
           O                        LG
           P                        LH
           Q                        LI
           R                        LJ
           S                        LK
           T                        LL
           U                        LM
           V                        LN
           W                        LO
           X                        LP
           Y                        LQ
           Z                        LR
           a                        LS
           b                        LT
           c                        LU
           d                        LV
           e                        LW
           f                        LX
           g                        LY

9n6z-pdb-bundle2.pdb:
           A                        LZ
           B                        NA
           C                        NB
           D                        NC
           E                        ND
           F                        NE
           G                        NF
           H                        NG
           I                        NH
           J                        NI
           K                        NK
           L                        NM
           M                        NN
           N                        NQ
           O                        NS
           P                        NV
           Q                        OA
           R                        SA
           S                        SB
           T                        SC
           U                        SD
           V                        SE
           W                        SF
           X                        SG
           Y                        SH
           Z                        SI
           a                        SJ
           b                        SK
           c                        SL
           d                        SM
           e                        SP
           f                        SQ
           g                        SR
           h                        SS
           i                        ST
           j                        SU
           k                        SW
           l                        SY
           m                        SZ
