Bacterium adhesion

On the other hand, for low s.f.e. bacteria, a preference for low s.f.e. surfaces is predicted by the thermodynamic approach of Absolom et al. [32]. This effect may be explained mechanistically by hydrophobic interaction between the low s.f.e. surface and the low s.f.e. bacterium. Adhesion is driven by release of water from both the surface and the bacterium thus leading to an increase in entropy [38],... 

Caccavo F, Schamberger PC, Keiding K, Nielsen PH (1997) Role of hydrophobicity in adhesion of the dissimilatory Fe(III)-reducing bacterium Shewanella alga to amorphous Fe(lll) oxide. App Environ Microbio 63 3837-3843... 

TSome microbial pathogens have lectins that mediate bacterial adhesion to host cells or toxin entry into cells. The bacterium believed responsible for most gastric ulcers, Helicobacter pylori, adheres to the inner surface of the stomach by interactions between bacterial membrane lectins and specific oligosaccharides of membrane glycoproteins of the gastric epithelial cells... 

Leroy C, Delbarre-Ladrat C, GhUlebaert F et al. (2008) Effects of commercial enzymes on the adhesion of a marine biofilm-forming bacterium. Biofouling 24 11-22... 

Lipopolysaccharides are heat-stable complex amphiphilic macromolecules indispensable for the bacterial growth, viability and for the correct assembly of the external membrane they represent a defensive barrier which helps bacteria to resist to antimicrobial compounds and environmental stresses and are involved in many aspects of host-bacterium interactions as recognition, adhesion, colonization, and, in the case of extremophile bacteria, in the survival under harsh conditions (Alexander and Rietschel, 2001 Raetz and Whitfield, 2002 Raetz et al 2007). LPS are also called endotoxins because they are cell-bound and, once released, play a key role in the pathogenesis of Gram-negative infections, in mechanisms as... 

A bacterial infection starts in general with the adhesion of a bacterium onto a host cell. The adhesion mechanism has turned out to be far more complex than anticipated. For example, bacteria that express their adhesins directly on the cell wall are susceptible to shear forces. A shear flow will apply a torque onto the bacteria that will induce a successive breakage of bonds and result in bacterial rolling [f,2]. This often implies that the bacteria detach from the host cell, which, in turn, makes it less likely that they can pursue their infectious task. 

Use Protective colloid and emulsifying agent in bakery products (especially angel cake), clarification of wines, adhesives, paper coatings, pharmaceuticals, enzyme activation, lithography, analytical reagent, antidote for mercury poisoning, mordant in dyes. Note A recombinant DN A technique has made possible the formation of ovalbumin by the bacterium E. coli. 

The carbohydrate binding of H. pylori is still a complex situation with many postulated receptors. The picture is further confounded by the use of different strains, phase-variation, and use of different methods. The complex carbohydrate recognition pattern identified might partly be a result of the intense research efforts directed towards H. pylori. A parallel case is the multiple adhesive mechanisms described for Pseudomonas aeruginosa, another bacterium subjected to intense studies [65, and references therein]. 

The penetration of these bacteria into wood cell walls is initiated by adhesion to the lumen surface via an extracellular glycocalyx. The bacterium lyses the S3 layer and is then able to tunnel in the S2 and S, layers. The direction of tunnelling... 

Figure 2. Thermodynamics of the engulfment of a bacterium B by Phase 2 from Phase 1. Step 1, AG, approximates the free energy of adhesion. The net free energy change is ixGnet = yis — yta-...

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