flagellin

Flagellin is the major structural protein monomer of bacterial flagella. Flagellin through binding to its receptor and activation of antigen presenting cells stimulates the innate and adaptive immune responses. Flagellin is used as an effective systemic or mucosal adjuvant to stimulate the immune system. Flagellin is an agonist of Toll-like receptor 5 (TLR5), a pattern recognition receptor (PRR) of the innate immune system expressed on the basolateral surface of intestinal epithelial cells and on the surface of a subset of intestinal dendritic cells. Flagellin is delivered into the cytosol of macrophages by the T3SS-1 of serotype Typhimurium, where it activates the cytosolic interleukin-1 (IL-1) converting enzyme-protease activating factor (IPAF), a nucleotide-binding and oligomerization domain-like receptor (NLR) of the innate immunesystem. Recognition of flagellin by IPAF leads to activation of the inflammasome, followed by proteolytic activation of IL-1 and IL-18.

Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella. Flagellin A Protein, Campylobacter jejuni, Recombinant (His) is expressed in E. coli expression system with C-6xHis tag. The predicted molecular weight is 61.5 kDa and the accession number is Q46113.

Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella. Phase 2 flagellin Protein, Salmonella typhimurium, Recombinant (Avi & His & MBP), Biotinylated is expressed in E. coli expression system with N-MBP and C-6xHis-Avi tag. The predicted molecular weight is 79.8 kDa and the accession number is P52616.

Flagellin Protein, Clostridium botulinum, Recombinant (His & SUMO) is expressed in E. coli.

Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella.

Flagellin Protein, E. coli O157:H7, Recombinant is expressed in E. coli.

Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella. Flagellin C Protein, Shigella flexneri, Recombinant (His) is expressed in E. coli expression system with N-10xHis tag. The predicted molecular weight is 62.1 kDa and the accession number is Q08860.

Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella. Flagellin A Protein, Campylobacter jejuni, Recombinant is expressed in E. coli expression system. The predicted molecular weight is 59.5 kDa and the accession number is Q46113.

Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella. Flagellin Protein, E. coli, Recombinant is expressed in E. coli expression system. The predicted molecular weight is 51.2 kDa and the accession number is P04949.

Component of the core of the flagella. Flagellin Protein, Borrelia burgdorferi, Recombinant (His & SUMO) is expressed in E. coli expression system with N-6xHis-SUMO tag. The predicted molecular weight is 51.8 kDa and the accession number is P11089.

Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella. Flagellin B(flaB) Protein, Campylobacter jejuni, Recombinant (His) is expressed in E. coli expression system with C-6xHis tag. The predicted molecular weight is 61.6 kDa and the accession number is Q46114.

The role of flagella and motility in the attachment of the foodborne pathogen Listeria monocytogenes to various surfaces is mixed with some systems requiring flagella for an interaction and others needing only motility for cells to get to the surface. In nature this bacterium is a saprophyte and contaminated produce is an avenue for infection. Previous studies have documented the ability of this organism to attach to and colonize plant tissue. Motility mutants were generated in three wild type strains of L. monocytogenes by deleting either FlaA, the gene encoding flagellin, or motAB, genes encoding part of the flagellar motor, and tested for both the ability to colonize sprouts and for the fitness of that colonization. The motAB mutants were not affected in the colonization of alfalfa, radish, and broccoli sprouts; however, some of the FlaA mutants showed reduced colonization ability. The best colonizing wild type strain was reduced in colonization on all three sprout types as a result of a FlaA deletion. A mutant in another background was only affected on alfalfa. The third, a poor alfalfa colonizer was not affected in colonization ability by any of the deletions. Fitness of colonization was measured in experiments of competition between mixtures of mutant and parent strains on sprouts. Here the FlaA and motAB mutants of the three strain backgrounds were impaired in fitness of colonization of alfalfa and radish sprouts, and one strain background showed reduced fitness of both mutant types on broccoli sprouts. Together these data indicate a role for flagella for some strains to physically colonize some plants, while the fitness of that colonization is positively affected by motility in almost all cases.

Responsible for the coupling of flagellin expression to flagellar assembly by preventing expression of the flagellin genes when a component of the middle class of proteins is defective. It negatively regulates flagellar genes by inhibiting the activity of FliA by directly binding to FliA. FlgM Protein, E. coli, Recombinant (His & Myc) is expressed in E. coli expression system with N-10xHis and C-Myc tag. The predicted molecular weight is 17.8 kDa and the accession number is P0AEM4.