Publication Date:
1980-06-06
Description:
Oxygen (O2) consumption and net K+ uptake were measured simultaneously upon reintroduction of K+ into a K+-depleted suspension of renal tubules. The K+/O2 stoichiometries of 11.8 +/- 0.2 and 8.4 +/- 0.6 were obtained for reduced nicotinamide adenine dinucleotide- and flavoprotein-linked substrates, respectively. These values complement classical K+ to adenosine triphosphate (ATP) and ATP/O2 stoichiometries, thereby demonstrating a remarkably efficient coupling between the processes of Na+- and K+-dependent adenosinetriphosphatase-mediated ion transport and oxidative phosphorylation within the intact cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harris, S I -- Balaban, R S -- Mandel, L J -- New York, N.Y. -- Science. 1980 Jun 6;208(4448):1148-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6246581" target="_blank"〉PubMed〈/a〉
Keywords:
Adenosine Triphosphate/*metabolism
;
Animals
;
Biological Transport, Active
;
Kidney Tubules/metabolism
;
Mitochondria/metabolism
;
NAD/metabolism
;
Ouabain/pharmacology
;
*Oxidative Phosphorylation
;
*Oxygen Consumption/drug effects
;
Potassium/*metabolism
;
Rabbits
;
Sodium-Potassium-Exchanging ATPase/*metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
