    New chain ID            Original chain ID

9v1i-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
           S                        lS

9v1i-pdb-bundle2.pdb:
           A                        lT
           B                        lU
           C                        lV
           D                        lW
           E                        lX
           F                        lY
           G                        lZ
           H                        la
           I                        lb
           J                        lc
           K                        ld
           L                        le
           M                        lf
           N                        lg
           O                        lh
           P                        li
           Q                        lj
           R                        lk
           S                        ll
           T                        lm
           U                        ln
           V                        lo
           W                        lp
           X                        lq
           Y                        lr
