Chemotaxis in Bacillus subtilis requires either of two functionally redundant CheW homologs
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چکیده
منابع مشابه
Permeabilization of Bacillus subtilis to Chemotaxis
The net methylation of methyl-accepting chemotaxis proteins (MCPs) is the biochemical manifestation of physiological adaptation to amino acid chemoattractants by Escherichia coli (4). In Bacillus subtilis, demethylation of MCPs occurs during such adaptation (3). The activity of chemotaxis methyltransferase is detectable in vivo and in vitro. As an alternative assay, whole cells can be permeabil...
متن کاملDeveloping Tools for Investigating Chemotaxis Signal Clusters in Bacillus Subtilis
Title of Thesis: DEVELOPING TOOLS FOR INVESTIGATING CHEMOTAXIS SIGNAL CLUSTERS IN BACILLUS SUBTILIS James A. Rogers, Jr., Master of Science, 2012 Thesis directed by: Associate Professor Richard C. Stewart Department of Cell Biology and Molecular Genetics Many bacteria make use of a set of dedicated chemoreceptor proteins to control a His-Asp signaling system; this control converts environmental...
متن کاملThe three adaptation systems of Bacillus subtilis chemotaxis.
Adaptation has a crucial role in the gradient-sensing mechanism that underlies bacterial chemotaxis. The Escherichia coli chemotaxis pathway uses a single adaptation system involving reversible receptor methylation. In Bacillus subtilis, the chemotaxis pathway seems to use three adaptation systems. One involves reversible receptor methylation, although quite differently than in E. coli. The oth...
متن کاملEffect of methionine on chemotaxis by Bacillus subtilis.
Bacillus subtilis, like Escherichia coli and Salmonella typhimurium, carries out chemotaxis by modulating the relative frequency of smooth swimming and tumbling. Like these enteric bacteria, methionine auxotrophs starved for methionine show an abnormally long-period of smooth swimming after addition of attractant. This "hypersensitive" state requires an hour of starvation for its genesis, which...
متن کاملSite-specific methylation in Bacillus subtilis chemotaxis: effect of covalent modifications to the chemotaxis receptor McpB
The Bacillus subtilis chemotaxis pathway employs a receptor methylation system that functions differently from the one in the canonical Escherichia coli pathway. Previously, we hypothesized that B. subtilis employs a site-specific methylation system for adaptation where methyl groups are added and removed at different sites. This study investigated how covalent modifications to the adaptation r...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1994
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.176.9.2736-2739.1994