Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"CheD"”.
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Investigation of the Roles of CheD in the Bacillus Subtilis Chemotactic Signal Transduction
… systems: the methylation system, the CheC/CheD/CheY-p system and the CheV system. CheD, the previously identified receptor deamidase, was shown to be critical to the ability of B. subtilis to perform chemotaxis and is the main focus of this study.
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Investigation of the roles of CheD in the Bacillus subtilis chemotactic signal transduction
… systems: the methylation system, the CheC/CheD/CheY-p system and the CheV system. CheD, the previously identified receptor deamidase, was shown to be critical to the ability of B. subtilis to perform chemotaxis and is the main focus of this study. This study started from characterization of …
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The Chemotaxis Phosphatases cheC and cheX
… enhanced nearly five fold upon association with CheD. In this study, CheC mutants were generated in putative active site residues and the CheD binding helix. The mutants were examined for in vivo complementation, CheY binding, and phosphatase ability. Based on the active site mutants, a …
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Quantification of the Chemotaxis Protein Expression Levels in Bacillus Subtilis
The expression levels of CheD appear to be tuned to give the functional ratio of protein need to participate in adaptation. When the potential binding partners of CheD are deleted (cheC and all ten receptors), the protein levels of CheD drop significantly. This finding suggests that B. subtilis …
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Regulation and Role of Methylation During Chemotaxis in Bacillus Subtilis
While CheC and CheD affect the level of receptor methylation, these proteins are not absolutely required for either methylation or demethylation of McpB. Their role in chemotaxis is unknown but may function as structural proteins facilitating a higher-order organization of the MCPs as has been …
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Control of Chey-P Levels in the Chemotactic Sensory Transduction Cascade of Bacillus Subtilis
… to be enhanced 5-fold by the chemotaxis protein CheD. In vivo, a double mutant lacking cheC and the region of fliY that encodes the CheY-P binding domain is almost completely smooth swimming, implying that these cells contain very high levels of CheY-P. CheC appears to be primarily involved in …
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A Quantitative Characterization of the Chemotactic Behavior of Tethered Bacillus Subtilis Cells
… was the antagonistic roles of CheC and CheD in biasing the probability of smooth swimming. CheC was identified as a regulator of the energy barrier associated with flagellar switching, and so is presumed to contact the flagellar switch. Since CheC also interacts with the receptor …
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Tartaglia, Zigzag et Flips : les particules denses à haut Reynolds
… trajectories. Those dense projectiles are laun- ched in air at several hundred kilometers per hour. In this situation, ball trajectories depend on the fluid flow around them which occurs at high Reynolds number (Re > 1000). The first effect we consider is the fluid drag. This friction reduces the …
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Quantification and functional characterization of Sinorhizobium meliloti chemotaxis proteins
… Proteins again can be grouped by abundance: CheD, CheY1, and CheY2 are the most abundant. CheR and CheB appear in lower amounts, CheS and CheT appear to be auxiliary proteins, and finally CheW1 and CheW2, which directly interact with the receptors and CheA. Chapter 4 focuses on altered …