Results 31 to 40 of about 60,935 (266)
Defining Two Chemosensory Arrays in Shewanella oneidensis
Biomolecules, 2022 Shewanella oneidensis has 2 functional chemosensory systems named Che1 and Che3, and 27 chemoreceptors. Che3 is dedicated to chemotaxis while Che1 could be involved in RpoS post-translational regulation.
Emma M. Fortier +7 more
doaj +1 more source
Resolving the binding-kinase discrepancy in bacterial chemotaxis: A nonequilibrium allosteric model and the role of energy dissipation [PDF]
Proc. Natl. Acad. Sci. U.S.A. 120, e2303115120 (2023), 2023 The Escherichia coli chemotaxis signaling pathway has served as a model system for studying the adaptive sensing of environmental signals by large protein complexes. The chemoreceptors control the kinase activity of CheA in response to the extracellular ligand concentration and adapt across a wide concentration range by undergoing methylation and ...
arxiv +1 more source
Hypoxic regulation of ion channel function and expression [PDF]
, 2002 Acute hypoxia regulates the activity of specific ion channels in a rapid and reversible manner. Such effects underlie appropriate cellular responses to hypoxia which are designed to initiate cardiorespiratory reflexes and contribute importantly to other ...
Peers, C.
core +1 more source
Acute oxygen sensing: diverse but convergent mechanisms in airway and arterial chemoreceptors [PDF]
, 2001 Airway neuroepithelial bodies sense changes in inspired O2, whereas arterial O2 levels are monitored primarily by the carotid body. Both respond to hypoxia by initiating corrective cardiorespiratory reflexes, thereby optimising gas exchange in the face ...
Kemp, P.J., Peers, C.
core +4 more sources
Rotenone selectively occludes sensitivity to hypoxia in rat carotid body glomus cells [PDF]
, 2003 Carotid body glomus cells release transmitters in response to hypoxia due to the increase of excitability resulting from inhibition of O2 -regulated K+ channels. However, the mechanisms involved in the detection of changes of O2 tension are unknown.
García Fernández, María +3 more
core +2 more sources
The Interaction of RecA With Both CheA and CheW Is Required for Chemotaxis
Frontiers in Microbiology, 2020 Salmonella enterica is the most frequently reported cause of foodborne illness. As in other microorganisms, chemotaxis affords key physiological benefits, including enhanced access to growth substrates, but also plays an important role in infection and ...
Elisabet Frutos-Grilo +4 more
doaj +1 more source
KISS1 and KISS1R expression in the human and rat carotid body and superior cervical ganglion
European Journal of Histochemistry, 2011 KISS1 and its receptor, KISS1R, have both been found to be expressed in central nervous system, but few data are present in the literature about their distribution in peripheral nervous structures.
A. Porzionato +6 more
doaj +1 more source
Biomolecules, 2020 Chemotaxis is an important virulence factor of the foodborne pathogen Campylobacter jejuni. Inactivation of chemoreceptor Tlp3 reduces the ability of C. jejuni to invade human and chicken cells and to colonise the jejunal mucosa of mice. Knowledge of the
Mohammad F. Khan +6 more
doaj +1 more source
Optimal receptor-cluster size determined by intrinsic and extrinsic noise [PDF]
Phys. Rev. E 83, 021914, (2011), 2011 Biological cells sense external chemical stimuli in their environment using cell-surface receptors. To increase the sensitivity of sensing, receptors often cluster, most noticeably in bacterial chemotaxis, a paradigm for signaling and sensing in general.
arxiv +1 more source
Marine Drugs, 2011 Carotid bodies (CBs) are secondary sensory receptors in which the sensing elements, chemoreceptor cells, are activated by decreases in arterial PO2 (hypoxic hypoxia).
Constancio Gonzalez +3 more
doaj +1 more source