Helicobacter pylori is a Gram-negative, microaerophilic, human gastric pathogen classified by WHO as a Type 1 carcinogen. Its lipopolysaccharide (LPS) O-antigen is responsible for its virulence. Lewis antigens on its O-polysaccharides mimic glycan structures on human cells and interact with the C-type lectin DC-SIGN on dendritic cells, thereby down-regulating an inflammatory response. It also causes chronic type B gastritis (a prerequisite for duodenal ulcers) and is linked with mucosa-associated lymphoid tissue (MALT) and with B-cell MALT lymphomas.
CE-ESMS (capillary electrophoresis-electrospray mass spectrometry), tandem mass spectrometry and precursor ion scanning with fe-CID (front-end collision-induced dissociation)
Protein Glycosylation linked (PGL) gene(s)
Predicted Accessory Gene(s)
The products of the neuA/flmD/flmH (HP0326a, 0326b, 0327) genes are likely involved in the enzymatic fagellin glycosylation pathway.