    New chain ID            Original chain ID

9rcb_1-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
9rcb_1-pdb-bundle2.pdb:
           A                         S
           B                         T
           C                         U
           D                         V
           E                         X
           F                         Z
           G                         b
           H                         c
           I                         d
           J                         e
           K                         f
           L                         g
           M                         h
           N                         i
           O                         j
           P                         k
           Q                         l
           R                         m
           S                         n
9rcb_1-pdb-bundle3.pdb:
           A                         n
           B                         o
           C                         p
           D                         q
           E                         r
           F                         s
           G                         u
           H                         w
