Effects of receptor modification and temperature on dynamics of sensory complexes in Escherichia colichemotaxis

• Verfasst von: Schulmeister, Sonja Elke [VerfasserIn]
• Verfasst von: Große, Karin [VerfasserIn]
• Verfasst von: Sourjik, Victor [VerfasserIn]
• Titel: Effects of receptor modification and temperature on dynamics of sensory complexes in Escherichia colichemotaxis
• Verf.angabe: Sonja Schulmeister, Karin Grosse and Victor Sourjik
• E-Jahr: 2011
• Jahr: 06 October 2011
• Umfang: 10 S.
• Illustrationen: Illustrationen
• Fussnoten: Gesehen am 27.10.2022
• Titel Quelle: Enthalten in: BMC microbiology
• Ort Quelle: London : BioMed Central, 2001
• Jahr Quelle: 2011
• Band/Heft Quelle: 11(2011), 1 vom: Okt., Artikel-ID 222, Seite 1-10
• ISSN Quelle: 1471-2180
• DOI: doi:10.1186/1471-2180-11-222
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Cluster Core
• Sach-SW: Fluorescence Recovery After Photobleaching
• Sach-SW: Receptor Cluster
• Sach-SW: Sensory Complex
• Sach-SW: Substrate Site
• K10plus-PPN: 1820178943

Abstract

Extracellular stimuli in chemotaxis of Escherichia coli and other bacteria are processed by large clusters of sensory complexes. The stable core of these clusters is formed by transmembrane receptors, a kinase CheA, and an adaptor CheW, whereas adaptation enzymes CheR and CheB dynamically associate with the clusters via interactions with receptors and/or CheA. Several biochemical studies have indicated the dependence of the sensory complex stability on the adaptive modification state of receptors and/or on temperature, which may potentially allow environment-dependent tuning of its signalling properties. However, the extent of such regulation in vivo and its significance for chemotaxis remained unclear.