    New chain ID            Original chain ID

5t2a-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
           Q                         Q
           R                         R
           S                         S
           T                         T
           U                         U
           V                         V
           W                         W
           X                         X
           Y                         Y
           Z                         Z
           a                         a
           b                         b

5t2a-pdb-bundle2.pdb:
           A                         c
           B                         d
           C                         e
           D                         f
           E                         g
           F                         h
           G                         i
           H                         j
           I                         k
           J                         l
           K                         m
           L                         n
           M                         o
           N                         p
           O                         q
           P                         r
           Q                         s
           R                         t
           S                         u
           T                         v
           U                         w
           V                         0
           W                         1
           X                         2
           Y                         3
           Z                         4
           a                         5
           b                         6
           c                         7
           d                         8
           e                        AC
           f                        AD
           g                        AE
           h                        AG
           i                        AH
           j                        AI
           k                        AJ
           l                        AK
           m                        AL
           n                        AM
           o                        AN
           p                        AO
           q                        AP
           r                        AQ
           s                        AR
           t                        AS
           u                        AT
           v                        AV
           w                        AW

5t2a-pdb-bundle3.pdb:
           A                        AX
           B                        AY
           C                        AZ
