These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.
Pubmed for Handhelds
PUBMED FOR HANDHELDS
Search MEDLINE/PubMed
Title: [Biphasic energy-dependent potassium ion absorption by Escherichia coli cells]. Author: Durgar'ian SS, Martirosov SM. Journal: Biofizika; 1980; 25(4):654-7. PubMed ID: 6998505. Abstract: The E. coli cells remove acid and accumulate potassium ions in two phases in the presence of glucose. The first phase (5-7 min) takes place only with an increase of external osmolarity; the second phase begins after 20 min and is not sensitive to alteration of the osmotic pressure. Potassium efflux occurs between two phases of K+-accumulation in alkaline media. Replacement of glucose by lactate results in a decrease of the first phase and abolition of the second one. The initial rate of K+-uptake for the first phase is a saturation curve in the range of 6 mM of external potassium concentration. These data indicate that the osmosensitive system of K+-uptake is connected with the first phase.[Abstract] [Full Text] [Related] [New Search]