Curiously, the putative translation merchandise of genes hp0289, hp0609, and hp0922 form a group of paralogs to VacA cytotoxin [26], which can be observed in a a number of sequence alignment (not shown). Structural similarities of VacA to extracellular IgA proteases of Haemophilus influenzae have been explained earlier [11]
These info reveal that the export of the proteases might arise via lively sign...