Graduate School of Frontier Biosciences, Osaka University

Japanese

Dissecting a three-protein bacterial brain: E. coli's chemosensory array
Prof. John Sandy Parkinson (Department of Biology, The University of Utah)

Date/Time

Mar 14, 2018 (Thu), 14:40-15:40

Place

2F Seminar room, BioSystems Building

Speaker

Prof. John Sandy Parkinson (Department of Biology, The University of Utah)

Title

Dissecting a three-protein bacterial brain: E. coli's chemosensory array

Abstract

Motile E. coli cells use transmembrane chemoreceptors to track chemical gradients with extraordinary precision. The receptors form cooperative, supramolecular arrays through interaction with an autokinase, CheA, and a scaffold protein, CheW, that couples CheA activity to receptor control. This "three-protein brain" produces signals that control the cell's flagellar motors in response to chemical stimuli. My lab uses molecular genetic approaches to investigate how stimulus information travels through the chemotaxis signaling proteins, the sources of signal amplification in the system, and the mechanisms of CheA kinase control. My talk will present some of the evidence for our current molecular view of signal transduction in the E. coli chemotaxis system.

Host

Keiichi Namba