    New chain ID            Original chain ID

7bhp-pdb-bundle1.pdb:
           A                        L5
           B                        L7
           C                        L8
           D                        LA
           E                        LB
           F                        LC
           G                        LD
           H                        LE
           I                        LF
           J                        LG

7bhp-pdb-bundle2.pdb:
           A                        LH
           B                        LI
           C                        LJ
           D                        LL
           E                        LM
           F                        LN
           G                        LO
           H                        LP
           I                        LQ
           J                        LR
           K                        LS
           L                        LT
           M                        LU
           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                        Lj
           b                        Lk
           c                        Ll
           d                        Lm
           e                        Lo
           f                        Lp
           g                        Lr
           h                         A
           i                         B
