Helicobacter pylori enzymes and adhesion factors

Helicobacter pylori (H. pylori) enzymes and adhesion factors are a diverse group of bacterial proteins essential for the survival, colonization, and pathogenesis of the bacterium in the human stomach [PMC: 5045270, Wikipedia]. The most prominent enzyme is urease, a nickel-dependent metalloenzyme that neutralizes gastric acid by producing ammonia, thereby creating a neutral microenvironment necessary for bacterial survival [PMC: 11181444, PMC: 11131444, NIH Bookshelf: NBK2447]. Adhesion factors, such as Blood group antigen-binding adhesin (BabA) and Sialic acid-binding adhesin (SabA), are outer membrane proteins that facilitate the specific attachment of H. pylori to the gastric epithelium, preventing its clearance by mucus flow and peristalsis [PMC: 5483515, PMC: 8151465, Frontiers: 2021]. Other factors like γ-glutamyltransferase (gGT) and OipA contribute to metabolic adaptation and the induction of host inflammatory responses [Longevity Today: 2026, PMC: 5045270]. These factors are considered high-value therapeutic targets because their inhibition can prevent initial colonization or eradicate persistent infections, offering an alternative or adjunct to traditional antibiotics which face increasing resistance [J. Med. Microbiol.: 2023, ACS Omega: 2025]. Current pharmacological strategies include the use of urease inhibitors like acetohydroxamic acid and bismuth salts, as well as the development of anti-adhesion agents and probiotics to disrupt bacterial engraftment [Discover Applied Sciences: 2024, ACS Omega: 2025, PubMed: 9600637].

Other names

Helicobacter pylori virulence factorsH. pylori colonization factorsH. pylori adhesins and enzymesHelicobacter pylori adhesins

Inhibition of urease activity to prevent gastric acid neutralization [PMC: 11181444, PMC: 11131444]; blockade of adhesin-receptor binding to prevent bacterial attachment to the gastric mucosa [Discover Applied Sciences: 2024, Ace Therapeutics]; competitive exclusion by probiotics [PMC: 11131444]; disruption of bacterial membrane integrity [NIH Bookshelf: NBK2447].