    New chain ID            Original chain ID

9spf-pdb-bundle1.pdb:
           A                        At
           B                        Et
           C                        L5
           D                        L7
           E                        L8
           F                        LB
           G                        LC
           H                        LD
           I                        LE
           J                        LF
           K                        LG
           L                        LH

9spf-pdb-bundle2.pdb:
           A                        LI
           B                        LJ
           C                        LL
           D                        LM
           E                        LN
           F                        LO
           G                        LP
           H                        LQ
           I                        LR
           J                        LS
           K                        LT
           L                        LU
           M                        LV
           N                        LW
           O                        LX
           P                        LY
           Q                        LZ
           R                        La
           S                        Lb
           T                        Lc
           U                        Ld
           V                        Le
           W                        Lf
           X                        Lg
           Y                        Lh
           Z                        Li
           a                        Lk
           b                        Ll
           c                        Lm
           d                        Ln
           e                        Lo
           f                        Lp
           g                        Lr
           h                        Mr
           i                        Pt
           j                        S2
           k                        SB
           l                        SC
           m                        SD
           n                        SE
           o                        SF
           p                        SG
           q                        SH
           r                        SI
           s                        SJ
           t                        SK
           u                        SL
           v                        SM
           w                        SN
           x                        SO
           y                        SP
           z                        SQ
           0                        SR
           1                        SS
           2                        ST
           3                        SU
           4                        SV
           5                        SW

9spf-pdb-bundle3.pdb:
           A                        SY
           B                        SZ
           C                        Sa
           D                        Sb
           E                        Sc
           F                        Sd
           G                        Se
           H                        Sf
           I                        Sg
           J                        LA
           K                        SA
           L                        SX
           M                        Lj
