    New chain ID            Original chain ID

6t4q-pdb-bundle1.pdb:
           A                        C2
           B                        SB
           C                        SP
           D                        SC
           E                        SD
           F                        SE
           G                        SF
           H                        SG
           I                        SH
           J                        SI
           K                        SJ
           L                        SK
           M                        SL
           N                        SM
           O                        SN
           P                        SO
           Q                        SQ
           R                        SR
           S                        SS
           T                        ST
           U                        SU
           V                        SV
           W                        SW
           X                        SX
           Y                        SY
           Z                        SZ
           a                        Sa
           b                        Sb
           c                        Sd
           d                        Se
           e                        Sf
           f                        Sg
           g                        Sc
           h                        C4
           i                        C3
           j                        LA
           k                        LB
           l                        LC
           m                        LD
           n                        LE
           o                        LF
           p                        LG
           q                        LH
           r                        LI
           s                        LJ

6t4q-pdb-bundle2.pdb:
           A                        LL
           B                        LM
           C                        LN
           D                        LO
           E                        LP
           F                        LQ
           G                        LR
           H                        LS
           I                        LT
           J                        LU
           K                        LV
           L                        LW
           M                        LX
           N                        LY
           O                        LZ
           P                        La
           Q                        Lb
           R                        Lc
           S                        Ld
           T                        Le
           U                        Lf
           V                        Lg
           W                        Lh
           X                        Li
           Y                        Lj
           Z                        Lk
           a                        Ll
           b                        Lm
           c                        Ln
           d                        Lo
           e                        Lp
           f                        C1
           g                         5

6t4q-pdb-bundle3.pdb:
           A                         6
           B                         7
           C                         8
           D                        SA
