    New chain ID            Original chain ID

4xej-pdb-bundle1.pdb:
           A                      AL02
           B                      AL03
           C                      AL04
           D                      AL05
           E                      AL06
           F                      AL09
           G                      AL11
           H                      AL13
           I                      AL14
           J                      AL15
           K                      AL16
           L                      AL17
           M                      AL18
           N                      AL19
           O                      AL20
           P                      AL21
           Q                      AL22
           R                      AL23
           S                      AL24
           T                      AL25
           U                      AL27
           V                      AL28
           W                      AL29
           X                      AL30
           Y                      AL32
           Z                      AL33
           a                      AL34
           b                      AL35
           c                      AS02
           d                      AS03
           e                      AS04
           f                      AS05
           g                      AS06
           h                      AS07
           i                      AS08
           j                      AS09
           k                      AS10
           l                      AS11
           m                      AS12
           n                      AS13
           o                      AS14
           p                      AS15
           q                      AS16
           r                      AS17
           s                      AS18
           t                      AS19
           u                      AS20
           v                      ATHX
           w                      BL02
           x                      BL03
           y                      BL04
           z                      BL05
           0                      BL06
           1                      BL09
           2                      BL11
           3                      BL13
           4                      BL14
           5                      BL15
           6                      BL16
           7                      BL17
           8                      BL18
           9                      BL19

4xej-pdb-bundle2.pdb:
           A                      BL20
           B                      BL21
           C                      BL22
           D                      BL23
           E                      BL24
           F                      BL25
           G                      BL27
           H                      BL28
           I                      BL29
           J                      BL30
           K                      BL32
           L                      BL33
           M                      BL34
           N                      BL35
           O                      BS02
           P                      BS03
           Q                      BS04
           R                      BS05
           S                      BS06
           T                      BS07
           U                      BS08
           V                      BS09
           W                      BS10
           X                      BS11
           Y                      BS12
           Z                      BS13
           a                      BS14
           b                      BS15
           c                      BS16
           d                      BS17
           e                      BS18
           f                      BS19
           g                      BS20
           h                      BTHX
           i                      AL31
           j                      BL31
           k                      A16S

4xej-pdb-bundle3.pdb:
           A                      A23S
           B                       A5S
           C                      B16S

4xej-pdb-bundle4.pdb:
           A                      B23S
           B                       B5S
           C                      AIRE
           D                      BIRE
