The chemotaxis signaling pathway can amplify signals

Range ≥50 Fold
Organism Bacteria Escherichia coli
Reference Hazelbauer GL, Falke JJ, Parkinson JS. Bacterial chemoreceptors: high-performance signaling in networked arrays. Trends Biochem Sci. 2008 Jan33(1):9-19. doi: 10.1016/j.tibs.2007.09.014 p.9 right column bottom paragraphPubMed ID18165013
Primary Source Segall JE, Block SM, Berg HC. Temporal comparisons in bacterial chemotaxis. Proc Natl Acad Sci U S A. 1986 Dec83(23):8987-91.PubMed ID3024160
Comments "The E. coli chemotaxis signaling pathway can amplify stimuli at least 50-fold (i.e. a 1% change in receptor occupancy elicits a 50% change in the rotational bias of the flagellar motors [primary source], a minimal estimate because receptors act in intermixed arrays [PMID 11742065])."
Entered by Uri M
ID 109305