Sequence alignment between 3efx(F) and UniProt seq P0CK94 (ELBH_ECOLX):

P0CK94 (ELBH_ECOLX): Heat-labile enterotoxin B chain from Escherichia coli
                 10        20        30        40        50        60        70        80        90       100       110       120    
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+----
UniProt: MNKVKFYVLFTALLSSLCAHGAPQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN
         ........................X..........................X...X..X.....X........XXXXXX................X....X.XX..................X.
PDB seq: ---------------------APQNITELCSEYHNTQIYTINDKILSYTESLAGK-EMAIITFKNGATFQVEV------DSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPNSIAAISMA-
                              ---------+---------+---------+---- ----+---------+--      -+---------+---------+---------+---------+-- 
                                      10        20        30        40        50        60        70        80        90       100