    New chain ID            Original chain ID

9v1l-pdb-bundle1.pdb:
           A                        lA
           B                        lB
           C                        lC
           D                        lD
           E                        lE
           F                        lF
           G                        lG
           H                        lH
           I                        lI
           J                        lJ
           K                        lK
           L                        lL
           M                        lM
           N                        lN
           O                        lO
           P                        lP
           Q                        lQ
           R                        lR

9v1l-pdb-bundle2.pdb:
           A                        lS
           B                        lT
           C                        lU
           D                        lV
           E                        lW
           F                        lX
           G                        lY
           H                        lZ
           I                        la
           J                        lb
           K                        lc
           L                        ld
           M                        le
           N                        lf
           O                        lg
           P                        lh
           Q                        li
           R                        lj
           S                        lk
           T                        ll
           U                        lm
           V                        ln
           W                        lo
           X                        lp
           Y                        lq
           Z                        ls
           a                        sH
