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Cell Structure and Function
Cell Structure and Function

... theory that all living things are composed of cells. Cells are living entities, surrounded by a membrane, that are capable of growing, reproducing, responding, and metabolizing. The smallest living things are single-celled microorganisms. There are many different kinds of cells (Figure 3.1). Some ce ...
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... over 6 seconds was 92 ± 35 µm . Firstly, this is largely due to the fact that the flagellar motors of the wild type bacteria used in the experiments demonstrated random run and tumble behavior which changes the magnitude of the net force and in turn the direction of motion9. Secondly, since the bea ...
Prokaryotic Diversity: The Bacteria
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... • Another group of clostridia obtains energy by fermenting amino acids. Some species ferment individual amino acids; others ferment only amino acid pairs. In this situation, one functions as the electron donor and is oxidized, the other acts as the electron acceptor and is reduced. ...
Will Koning`s Summer Project
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Identification and characterization of novel interaction partners of
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bacterial eye pathogens - UAB School of Optometry
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... CLINICAL PEARLS ABOUT BACTERIAL SUSCEPTIBLITY ÔSodium sulfacetamide, a bacteriostatic agent, with 84% in vitro coverage of all isolates, and an average cost of $13.11, appeared to be most cost-effective cost effective for empirical coverage of bacterial conjunctivitis. ÔThe fluoroquinolones, althou ...
bacterial eye pathogens - UAB School of Optometry
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IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS)
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... and N-acetylmuramic acids (MurNAc) that are linked by short peptides (reviewed in Vollmer et al., 2008). Grampositive bacteria possess one phospholipid membrane covered by a thick PG layer (20–80 nm) (reviewed in Silhavy et al., 2010) that commonly contains complex polysaccharides and teichoic acids ...
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PROKARYOTES AND THE ORIGINS OF METABOLIC DIVERSITY
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... is favorable due to lowered cost for product recovery. Protein secretion can be achieved via general secretion (Sec) pathway. Specific sequences, signal peptides (SPs), are necessary to direct the target protein into the translocation machinery. For example, >150 Sec-specific SPs have been identifie ...
CHARACTERIZATION OF THE ROLE OF PSEUDOMONAS
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... Figure 1.1 P. syringae type III effectors target multiple host cellular components. .............. 37 Figure 2.1 A schematic representation of enzymatic deamidation in proteins. .................... 72 Figure 2.2 The catalytic domains of diverse deamidases. .......................................... ...
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... Since bacilli only divide across their short axis there are fewer groupings. Bacillus is a shape (rod shaped) but there is also a genus of bacteria with the name Bacillus. You wouldn't confuse the two, since you know the rules for writing the genus and species names of organisms, ...
Current Opinion in Plant Biology
Current Opinion in Plant Biology

... the type III secretion system (T3SS) provide us with the best examples of pathogen proteins evolved to actively suppress basal defense. The T3SS is one of the most vital virulence systems used by Gram-negative bacterial plant pathogens such as Pseudomonas syringae, Ralstonia solanacearum, Xanthomona ...
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Trimeric autotransporter adhesin



In molecular biology, trimeric autotransporter adhesins (TAAs), are proteins found on the outer membrane of Gram-negative bacteria. Bacteria use TAAs in order to infect their host cells via a process called cell adhesion. TAAs also go by another name, oligomeric coiled-coil adhesins, which is shortened to OCAs. In essence, they are virulence factors, factors that make the bacteria harmful and infective to the host organism.TAAs are just one of many methods bacteria use to infect their hosts, infection resulting in diseases such as pneumonia, sepsis, and meningitis. Most bacteria infect their host through a method named the secretion pathway. TAAs are part of the secretion pathway, to be more specific the type Vc secretion system.Trimeric autotransporter adhesins have a unique structure. The structure they hold is crucial to their function. They all appear to have a head-stalk-anchor structure. Each TAA is made up of three identical proteins, hence the name trimeric. Once the membrane anchor has been inserted into the outer membrane, the passenger domain passes through it into the host extracellular environment autonomously, hence the description of autotransporter. The head domain, once assembled, then adheres to an element of the host extracellular matrix, for example, collagen, fibronectin, etc.
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