    New chain ID            Original chain ID

9pa7-pdb-bundle1.pdb:
           A                        CD
           B                        CI
           C                        CF
           D                        L5
           E                        L7
           F                        L8
           G                        LA
           H                        LB

9pa7-pdb-bundle2.pdb:
           A                        LC
           B                        LD
           C                        LE
           D                        LF
           E                        LG
           F                        LH
           G                        LI
           H                        LJ
           I                        LL
           J                        LM
           K                        LN
           L                        LO
           M                        LP
           N                        LQ
           O                        LR
           P                        LS
           Q                        LT
           R                        LU
           S                        LV
           T                        LW
           U                        LX
           V                        LY
           W                        LZ
           X                        La
           Y                        Lb
           Z                        Lc
           a                        Ld
           b                        Le
           c                        Lf
           d                        Lg
           e                        Lh
           f                        Li
           g                        Lj
           h                        Lk
           i                        Ll
           j                        Lm
           k                        Ln
           l                        Lo
           m                        Lp
           n                        Lr
           o                        Ls
           p                        Lt
           q                        Pt
           r                        S2
           s                        SA
           t                        SB
           u                        SC
           v                        SD
           w                        SE

9pa7-pdb-bundle3.pdb:
           A                        SF
           B                        SG
           C                        SH
           D                        SI
           E                        SJ
           F                        SK
           G                        SL
           H                        SM
           I                        SN
           J                        SO
           K                        SP
           L                        SQ
           M                        SR
           N                        SS
           O                        ST
           P                        SU
           Q                        SV
           R                        SW
           S                        SX
           T                        SY
           U                        SZ
           V                        Sa
           W                        Sb
           X                        Sc
           Y                        Sd
           Z                        Se
           a                        Sf
           b                        Sg
           c                        AT
           d                        CA
