Helicobacter pylori cell membrane and associated proteins (H. pylori membrane proteins)

The Helicobacter pylori cell membrane and its associated proteins constitute a complex structural and functional barrier essential for the bacterium's survival in the highly acidic environment of the human stomach. This target encompasses the inner membrane, the periplasm, and the outer membrane, which contains specialized proteins such as adhesins (e.g., BabA, SabA) and porins that facilitate colonization and nutrient uptake (Kusters et al., 2006, Clinical Microbiology Reviews). These membrane-associated proteins are critical for the secretion of virulence factors like VacA and the Cag type IV secretion system, which directly contribute to gastric inflammation and oncogenesis (Tegtmeyer et al., 2011, Trends in Microbiology). Therapeutically, the H. pylori cell membrane is a primary target for various antibiotics; for instance, beta-lactams like amoxicillin inhibit penicillin-binding proteins (PBPs) located on the membrane to disrupt cell wall synthesis (Salama et al., 2013, Nature Reviews Microbiology). Additionally, bismuth salts exert antimicrobial effects by accumulating in the periplasm and disrupting membrane-bound enzyme systems. Because these membrane components are vital for bacterial integrity and host interaction, they remain central to the development of both traditional triple-therapy regimens and novel antimicrobial peptides or vaccines aimed at eradicating chronic H. pylori infections.

Other names

Helicobacter pylori cell envelopeH. pylori outer membrane proteinsH. pylori inner membraneH. pylori membrane-associated proteins

Inhibition of cell wall synthesis (via PBPs), disruption of membrane integrity, inhibition of membrane-bound enzymes, and interference with membrane-associated protein synthesis or transport.