Potassium concentration for cells grown to exponential phase in LB

Range ~8 external: ~250 internal mM
Organism Bacteria Escherichia coli
Reference Pilizota T, Shaevitz JW. Fast, multiphase volume adaptation to hyperosmotic shock by Escherichia coli. PLoS One. 20127(4):e35205 p.7 left column 3rd paragraphPubMed ID22514721
Primary Source Su J, Gong H, Lai J, Main A, Lu S. The potassium transporter Trk and external potassium modulate Salmonella enterica protein secretion and virulence.Infect Immun. 2009 Feb77(2):667-75 AND Schultz SG, Solomon AK. Cation transport in Escherichia coli. I. Intracellular Na and K concentrations and net cation movement. J Gen Physiol. 1961 Nov45: 355-69.PubMed ID19001074, 13909521
Comments Large sucrose shocks produce a free-energy barrier to osmoprotectant accumulation during the initial recovery rate. Researchers estimate this maximum energy, DGmax, for potassium pumping using the known external, ~8 mM, and internal, ~250 mM, concentrations of potassium for cells grown to exponential phase in LB [primary sources].
Entered by Uri M
ID 107856