    New chain ID            Original chain ID

4v3p-pdb-bundle1.pdb:
           A                        Sa
           B                        SA
           C                        SB
           D                        SD
           E                        SE
           F                        SF
           G                        SI
           H                        SJ
           I                        SK
           J                        SL
           K                        SM
           L                        SO
           M                        SQ
           N                        SP
           O                        SS
           P                        SR
           Q                        SV
           R                        SW
           S                        SY
           T                        SZ
           U                        Sc
           V                        Sb
           W                        SU
           X                        SX
           Y                        SC
           Z                        SG
           a                        SH
           b                        SN
           c                        ST
           d                        S3
           e                        S2
           f                        S1

4v3p-pdb-bundle2.pdb:
           A                        L1
           B                        L3
           C                        L2
           D                        LA
           E                        LB
           F                        LE
           G                        LF
           H                        LH
           I                        LM
           J                        LP
           K                        LO
           L                        LR
           M                        LQ
           N                        LT
           O                        LU
           P                        LV
           Q                        LX
           R                        LZ
           S                        LY
           T                        Lb
           U                        Ld
           V                        Lf

4v3p-pdb-bundle3.pdb:
           A                        Lg
           B                        Lh
           C                        Ll
           D                        Ln
           E                        Lo
           F                        Lr
           G                        Lq
           H                        Ly
           I                        Lz
           J                        LG
           K                        LL
           L                        LN
           M                        LS
           N                        LW
           O                        La
           P                        Li
           Q                        Lj
           R                        Lk
           S                        Lp
           T                        Lx
           U                        LJ
           V                        Lt
           W                        Lu
           X                        Lv
           Y                        Lw
           Z                        Lc
           a                        Le
           b                        Ls
           c                        LC
           d                        LD
           e                        LK
           f                        Lm
           g                        LI
