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The sodium–potassium pump (sodium–potassium adenosine triphosphatase, also known as Na + /K +-ATPase, Na + /K + pump, or sodium–potassium ATPase) is an enzyme (an electrogenic transmembrane ATPase) found in the membrane of all animal cells.
The Allan variance (AVAR), also known as two-sample variance, is a measure of frequency stability in clocks, oscillators and amplifiers. It is named after David W. Allan and expressed mathematically as σ y 2 ( τ ) {\displaystyle \sigma _{y}^{2}(\tau )} .
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Jan 1, 2022 · Na,K-ATPase is an ubiquitous enzyme actively transporting Na-ions out of the cell in exchange for K-ions, thereby maintaining their concentration gradients across the cell membrane.
Mar 28, 2021 · Abstract. Maintenance of Na + and K + gradients across the cell plasma membrane is an essential process for mammalian cell survival. An enzyme responsible for this process, sodium-potassium ATPase (NKA), has been currently extensively studied as a potential anticancer target, especially in lung cancer and glioblastoma.
- Jiří Bejček, Vojtěch Spiwok, Eva Kmoníčková, Silvie Rimpelová, Silvie Rimpelová
- 10.3390/molecules26071905
- 2021
- Molecules. 2021 Apr; 26(7): 1905.
Feb 26, 2010 · The Na +, K + -ATPase (NKA) is an ubiquitous enzyme consisting of α, β and γ subunits, and is responsible for the creation and maintenance of the Na + and K + gradients across the cell membrane by transporting 3 Na + out and 2 K + into the cell. Sodium pump regulation is tissue as well as isoform specific.
- Mohd Suhail
- 10.4021/jocmr2010.02.263w
- 2010
- J Clin Med Res. 2010 Feb; 2(1): 1-17.
Jul 18, 2023 · Both sodium (Na +) and potassium (K +) ions are essential to living systems. Na + is the main cation in fluids surrounding the cells, while K + is most important inside the cells. Na + plays a role in muscle contraction, and both K + and Na + play a role in transmitting nerve impulses.
The Na-K-ATPase, or Na pump, is a membrane-bound protein that establishes and maintains the high internal K + and low internal Na + concentrations typical of most animal cells. By using the energy from the hydrolysis of one molecule of ATP, it transports three Na + out in exchange for two K + that are taken in.
