    New chain ID            Original chain ID

7pkr-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           D                         D
           E                         E
           F                         F
           G                         G
           H                         H
           I                         I
           J                         J
           K                         K
           L                         L
           M                         M
           N                         N
           O                         O
           P                         P

7pkr-pdb-bundle2.pdb:
           A                         Q
           B                         R
           C                         S
           D                         T
           E                         V
           F                         W
           G                         X
           H                         Y
           I                         Z
           J                        AA
           K                        BA
           L                        CA
           M                        DA
           N                        EA
           O                        FA
           P                        GA

7pkr-pdb-bundle3.pdb:
           A                        HA
           B                        IA
           C                        JA
           D                        KA
           E                        LA
           F                        MA
           G                        NA
           H                        OA
           I                        PA
           J                        QA
           K                        RA
           L                        SA
           M                        TA
           N                        UA
           O                        VA
           P                        WA

7pkr-pdb-bundle4.pdb:
           A                        XA
           B                        YA
           C                        ZA
           D                        AB
           E                        BB
           F                        CB
           G                        DB
           H                        EB
           I                        FB
           J                        GB
           K                        HB
           L                        IB
           M                        JB
           N                        KB
           O                        LB
           P                        MB

7pkr-pdb-bundle5.pdb:
           A                        NB
           B                        OB
           C                        PB
           D                        QB
           E                        RB
           F                        SB
           G                        TB
           H                        UB
           I                        VB
           J                        WB
           K                        XB
           L                        YB
           M                        ZB
           N                        AC
