Type IV pili (Tfp) are prokaryotic retractable appendages known to mediate surface attachment, motility, and subsequent clustering of cells. Tfp are the main means of motility for Neisseria gonorrhoeae, the causative agent of gonorrhea. Tfp are also involved in formation of the microcolonies, which play a crucial role in the progression of the disease. While motility of individual cells is rela...

The genome of Lactococcus lactis strain IL1403 harbors a putative pilus biogenesis cluster consisting of a sortase C gene flanked by 3 LPxTG protein encoding genes (yhgD, yhgE, and yhhB), called here pil. However, pili were not detected under standard growth conditions. Over-expression of the pil operon resulted in production and display of pili on the surface of lactococci. Functional analysis...

The amino-terminal amino acid sequence of the pili protein from Pseudomonas aeruginosa K pili is presented. The sequence is compared with those reported by others for pilin obtained from Neisseria gonorrhoeae and Moraxella nonlique-faciens. All three sequences are highly homologous, contain only two hydrophilic residues in the first 22 positions, and contain an unusual amino acid, N-monomethylp...

Bacterial pili assembled by the chaperone-usher pathway can mediate microbial attachment, an early step in the establishment of an infection, by binding specifically to sugars present in host tissues. Recent work has begun to reveal the structural basis both of chaperone function in the biogenesis of these pili and of bacterial attachment.

Naturally occurring dual infections with Escherichia coli of different serogroups occurred in 12 pigs 2 to 14 days of age. In each case, one isolate was hemolytic and produced K88 pili and the other was nonhemolytic and produced either K99 or 987P pili.

UNLABELLED Direct measurement of multiple physical properties of Geobacter sulfurreducens pili have demonstrated that they possess metallic-like conductivity, but several studies have suggested that metallic-like conductivity is unlikely based on the structures of the G. sulfurreducens pilus predicted from homology models. In order to further evaluate this discrepancy, pili were examined with s...

Background Magnetite-mediated direct interspecies electron transfer (DIET) between Geobacter and Methanosarcina species is increasingly being invoked to explain magnetite stimulation of methane production in anaerobic soils and sediments. Although magnetite-mediated DIET has been documented in defined co-cultures reducing fumarate or nitrate as the electron acceptor, the effects of magnetite ha...

The binding to mammalian cells of piliated enteric bacteria and the inhibition of the binding by antibodies to purified pili were studied. The target cells were epithelial cells from human bucca and human and rat urinary tracts, erythrocytes from various species, and Saccharomyces cerevisiae cells. The strains were selected to represent the two main agglutination patterns of enteric bacteria: m...

Most bacteria that colonize eukaryotes must bind directly to host cells to establish a replicative niche. In enteric bacteria, adhesion to host cells is often promoted by a lectin found on surface-localized pili. Some pili promote efficient adhesion only when they are subjected to shear stress, as found during the flow of blood over endothelium or mucous over the surface of the epithelium.

361 How to cite this article: Velez AMA, Valencia-Yepes CA, Howard MS. Immunologic markers to arrector pili muscle, blister tissue and vessels in a case of bullous eczema herpeticum. Our Dermatol Online. 2017;8(3):361-363. Submission: 10.10.2016; Acceptance: 01.02.2017 DOI: 10.7241/ourd.20173.105 Immunologic markers to arrector pili muscle, blister tissue and vessels in a case of bullous eczema...