    New chain ID            Original chain ID

9if7-pdb-bundle1.pdb:
           A                        L7
           B                        L8
           C                        L9
           D                        LA
           E                        LB
           F                        LC
           G                        LD
           H                        LF
           I                        LG
           J                        LH
           K                        LJ
           L                        LL
           M                        LN
           N                        LP
           O                        LQ
           P                        LR
           Q                        LS
           R                        LT
           S                        LV
           T                        LW
           U                        LY
           V                        LZ
           W                        SA
           X                        SC
           Y                        SD
           Z                        SF
           a                        SJ
           b                        SK
           c                        SL
           d                        SN

9if7-pdb-bundle2.pdb:
           A                        SO
           B                        SP
           C                        SQ
           D                        SS
           E                        ST
           F                        SU
           G                        SV
           H                        SW
           I                        TN
           J                        UX
           K                        62
           L                        63
           M                        64
           N                        65
           O                        66
           P                        67
           Q                        68
           R                        RN
           S                        24
           T                        25
           U                        2C
           V                        2D
           W                        2H
           X                        2I
           Y                        2J
           Z                        51
           a                        52
           b                        53
           c                        5B
           d                        5E
           e                        5F
           f                        5G
           g                        LE
           h                        LO
           i                        N2
           j                        N5
           k                        N6
           l                        U1
           m                        U2
           n                        U3
           o                        UB
           p                        UE
           q                        UF
           r                        UG
