    New chain ID            Original chain ID

7mqa-pdb-bundle1.pdb:
           A                        L0
           B                        L1
           C                        L2
           D                        L3
           E                        L4
           F                        L5
           G                        L6
           H                        L7
           I                        L8
           J                        L9
           K                        LA
           L                        LC
           M                        LD
           N                        LF
           O                        LG
           P                        LH
           Q                        LI
           R                        LJ
           S                        LK
           T                        LL
           U                        LM
           V                        LN

7mqa-pdb-bundle2.pdb:
           A                        LO
           B                        LP
           C                        LQ
           D                        LR
           E                        LS
           F                        LT
           G                        LU
           H                        LW
           I                        LY
           J                        LZ
           K                        NA
           L                        NB
           M                        ND
           N                        NF
           O                        NG
           P                        NH
           Q                        NI
           R                        NL
           S                        NM
           T                        NO
           U                        NP
           V                        NQ
           W                        NR
           X                        NS
           Y                        NT
           Z                        NU
           a                        NV
           b                        SA
           c                        SB
           d                        SC
           e                        SD
           f                        SE
           g                        SF
           h                        SG
           i                        SH

7mqa-pdb-bundle3.pdb:
           A                        SI
           B                        SJ
           C                        SK
           D                        SL
           E                        SM
           F                        SP
           G                        SQ
           H                        SR
           I                        SS
           J                        ST
           K                        SU
           L                        SW
           M                        SX
           N                        SY
           O                        SZ
