    New chain ID            Original chain ID

6tnu-pdb-bundle1.pdb:
           2                         2
           l                         l
           P                         P
           Q                         Q
           E                         E
           R                         R
           A                         A
           S                         S
           B                         B
           T                         T
           U                         U
           V                         V
           W                         W
           C                         C
           X                         X
           D                         D
           Y                         Y
           Z                         Z
           F                         F
           G                         G
           H                         H
           I                         I
           J                         J
           n                         n
           a                         a
           b                         b
           c                         c
           d                         d
           K                         K
           e                         e
           f                         f
           M                         M
           g                         g
           N                         N
           O                         O
           L                         L
           m                         m

6tnu-pdb-bundle2.pdb:
           A                        BQ
           B                        BR
           C                        BS
           D                        AW
           E                        BA
           F                        BE
           G                        BI
           H                        BM
           I                        BO
           J                        AA
           K                        AD
           L                        BD
           M                        AG
           N                        AJ
           O                        AM
           P                        AQ
           Q                        AU

6tnu-pdb-bundle3.pdb:
           A                        AX
           B                        BB
           C                        BF
           D                        BH
           E                        BJ
           F                        BL
           G                        AB
           H                        AE
           I                        AH
           J                        AK
           K                        AN
           L                        AR
           M                        AV
           N                        AY
           O                        BC
           P                        BG
           Q                        BK
           R                        BN
           S                        BP
           T                        AC
           U                        AF
           V                        AI
           W                        AL
           X                        AO
           Y                        AS
           Z                        AP
           a                        AT
           b                        eI
           c                        BT
