    New chain ID            Original chain ID

6tb3-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

6tb3-pdb-bundle2.pdb:
           A                        BQ
           B                        BT
           C                        BR
           D                        BS
           E                        AW
           F                        BA
           G                        BE
           H                        BI
           I                        BM
           J                        BO
           K                        AA
           L                        AD
           M                        BD
           N                        AG
           O                        AJ
           P                        AM

6tb3-pdb-bundle3.pdb:
           A                        AQ
           B                        AU
           C                        AX
           D                        BB
           E                        BF
           F                        BH
           G                        BJ
           H                        BL
           I                        AB
           J                        AE
           K                        AH
           L                        AK
           M                        AN
           N                        AR
           O                        AV
           P                        AY
           Q                        BC
           R                        BG
           S                        BK
           T                        BN
           U                        BP
           V                        AC
           W                        AF
           X                        AI
           Y                        AL
           Z                        AO
           a                        AS
           b                        AP
           c                        AT
           d                        BV
           e                        BW
