ArticleBiophysical journal2000
Response kinetics of tethered Rhodobacter sphaeroides to changes in light intensity.
Article in Biophysical journal, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed.
- Swimming Using a Unidirectionally Rotating, Single Stopping Flagellum in the Alpha ProteobacteriumFrontiers in microbiology · 2022Review
- Mechanism of Signalling and Adaptation through theInternational journal of molecular sciences · 2019Article
- Phototaxis of synthetic microswimmers in optical landscapes.Nature communications · 2016Article
- Novel methods for analysing bacterial tracks reveal persistence in Rhodobacter sphaeroides.PLoS computational biology · 2013Article
- Article
- New motion analysis system for characterization of the chemosensory response kinetics of Rhodobacter sphaeroides under different growth conditions.Applied and environmental microbiology · 2011Article
- Signal processing in complex chemotaxis pathways.Nature reviews. Microbiology · 2011Review
- Modeling chemotaxis reveals the role of reversed phosphotransfer and a bi-functional kinase-phosphatase.PLoS computational biology · 2010Article
- A bifunctional kinase-phosphatase in bacterial chemotaxis.Proceedings of the National Academy of Sciences of the United States of America · 2008Article
- The thermal impulse response of Escherichia coli.Proceedings of the National Academy of Sciences of the United States of America · 2008Article
- Light-induced behavioral responses (;phototaxis') in prokaryotes.Photosynthesis research · 2003Article
- Taxis response of various denitrifying bacteria to nitrate and nitrite.Applied and environmental microbiology · 2002Article
- Behavioral responses of Rhodobacter sphaeroides to linear gradients of the nutrients succinate and acetate.Applied and environmental microbiology · 2000Article
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rhodobacter sphaeroides can swim toward a wide range of attractants (a process known as taxis), propelled by a single rotating flagellum. The reversals of motor direction that cause tumbles in Eschericia coli taxis are replaced by brief motor stops, and taxis is controlled by a complex sensory system with multiple homologues of the E. coli sensory proteins. We tethered photosynthetically grown cells of R. sphaeroides by their flagella and measured the response of the flagellar motor to changes in light intensity. The unstimulated bias (probability of not being stopped) was significantly larger than the bias of tethered E. coli but similar to the probability of not tumbling in swimming E. coli. Otherwise, the step and impulse responses were the same as those of tethered E. coli to chemical attractants. This indicates that the single motor and multiple sensory signaling pathways in R. sphaeroides generate the same swimming response as several motors and a single pathway in E. coli, and that the response of the single motor is directly observable in the swimming pattern. Photo-responses were larger in the presence of cyanide or the uncoupler carbonyl cyanide 4-trifluoromethoxyphenylhydrazone (FCCP), consistent with the photo-response being detected via changes in the rate of electron transport.
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Registered trials
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