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Standardized solubilization and purification of different
Standardized solubilization and purification of different

... fraction and B the detergent-soluble membrane fraction from cells overexpressing the 35 kDa E. coli membrane protein NhaA (arrowed). Fractions were separated on an SDS-PAGE and proteins visualized by immunodetection of the His-tag after western blotting. M: His-tagged marker proteins. Part B shows t ...
Chapter 3 - Austin Community College
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... using ATP (follows rules of carriers)  ATP provides energy to open the carrier on the low-concentration side of the membrane (phosphorylation)  after the molecule binds, the carrier (pump protein) changes shape and simultaneously loses the phosphate group (dephosphorylation)  after dephosphorylat ...
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Posters – Infectious diseases and Vaccines NAME OF THE
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... The protein complex is mushroom shaped with overall dimensions of 100 Å  100 Å (Fig. 2). The seven-fold noncrystallographic axis of symmetry runs parallel to the channel opening, which spans the entire length of the protein assemblage. At its widest and narrowest points, the channel diameter is 4 ...
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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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