    New chain ID            Original chain ID

5jcs-pdb-bundle1.pdb:
           A                         A
           c                         c
           B                         B
           d                         d
           C                         C
           e                         e
           D                         D
           f                         f
           E                         E
           g                         g
           F                         F
           h                         h
           G                         G
           i                         i
           H                         H
           j                         j
           I                         I
           k                         k
           J                         J
           l                         l
           K                         K
           m                         m
           L                         L
           n                         n
           M                         M
           o                         o
           N                         N
           p                         p
           O                         O
           q                         q
           P                         P
           r                         r
           Q                         Q
           s                         s
           R                         R
           t                         t
           S                         S
           u                         u
           T                         T

5jcs-pdb-bundle2.pdb:
           x                         x
           U                         U
           y                         y
           V                         V
           z                         z
           X                         X
           Y                         Y
           Z                         Z
           a                         a
