    New chain ID            Original chain ID

6y0g-pdb-bundle1.pdb:
           A                        A4
           B                        B4
           C                        C4
           D                        D4
           E                        L5
           F                        L7
           G                        L8
           H                        LA
           I                        LB
           J                        LC
           K                        LD
           L                        LE

6y0g-pdb-bundle2.pdb:
           A                        LF
           B                        LG
           C                        LH
           D                        LI
           E                        LJ
           F                        LL
           G                        LM
           H                        LN
           I                        LO
           J                        LP
           K                        LQ
           L                        LR
           M                        LS
           N                        LT
           O                        LU
           P                        LV
           Q                        LW
           R                        LX
           S                        LY
           T                        LZ
           U                        La
           V                        Lb
           W                        Lc
           X                        Ld
           Y                        Le
           Z                        Lf
           a                        Lg
           b                        Lh
           c                        Li
           d                        Lj
           e                        Lk
           f                        Ll
           g                        Lm
           h                        Ln
           i                        Lo
           j                        Lp
           k                        Lr
           l                        S2
           m                        SA
           n                        SB
           o                        SC
           p                        SD
           q                        SE
           r                        SF
           s                        SG
           t                        SH
           u                        SI
           v                        SJ
           w                        SK
           x                        SL
           y                        SM
           z                        SN
           0                        SO
           1                        SP

6y0g-pdb-bundle3.pdb:
           A                        SQ
           B                        SR
           C                        SS
           D                        ST
           E                        SU
           F                        SV
           G                        SW
           H                        SX
           I                        SY
           J                        SZ
           K                        Sa
           L                        Sb
           M                        Sc
           N                        Sd
           O                        Se
           P                        Sf
           Q                        Sg
