atomic number2 atomic weight4.002602 melting pointnone boiling point−268.9 °C (−452 °F) density (1 atm, 0 °C)0.1785 gram/litre oxidation state0 electron configuration1s2 This article was most recently revised and updated byAmy Tikkanen....
A primary mechanism for acid efflux is sodium–proton exchange, which brings sodium into the cell in exchange for protons (33). The sodium–potassium ATPase pumps out some of the excess sodium but the net effect of increased sodium influx through sodium–proton exchange, combined with the ...
Zoniporide reduced the maximal proliferation capacity, cell number, thymidine incorporation, and ki67 (marker of proliferation) fluorescence in haOC cells. SLC9A1 (for NHE1) amplification associated with lower overall patient survival. In conclusion, NHE1 is expressed in human ovarian cancer where ...
The density change of sodium chloride crystals upon irradiation with 350 Mev protons with a total flux of 1×10protons/cmhas been measured and found to be -8.3×10g/cm. The number of negative-ion vacancies calculated from this density change is of the same order as the number of F centers...
Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the $^{22}$Ne(p,$\\gamma$)$^{23}$Na reaction The ^{22} ^{22} Ne(p, \\gamma \\gamma ) ^{23} ^{23} Na reaction is included in the neon-sodium cycle of hydrogen burning. A number of narrow resonances ...
Structural mechanism of proton conduction in otopetrin proton channel Ninghai Gan, Weizhong Zeng, Yan Han, Qingfeng Chen & Youxing Jiang Nature Communications volume 15, Article number: 7250 (2024) Cite this article 1551 Accesses 7 Altmetric Metrics details This article has been updatedAbstract...
The estimated average number of methylene groups per lipid chain essentially doubled its value from approximately 4-5 for the youngest mice to around 8 for the elderly, while the values obtained for the average number of double bonds per chain decreased with age from about 1-0.9 at 0.5/1 ...
Measurement of pH verified a value of 5.5 after dilution. Protein was applied onto a carboxymethyl sepharose fast flow column (GE Healthcare) and eluted with a 0-500 mM sodium chloride gradient that contained 50 mM MES pH 6.5 before concentration to 23 mg mL−1. Crystallization was ...
A simplified model of a solution is employed in which local proton relaxation times are assigned to three different sites: those near the anion, those near the cation and those not near any ion. A procedure is worked out to calculate the local relaxation times and the number of nearest-...
The V-PPase activity of young cells is higher compared to the V-ATPase activity, even though the V-ATPase is the major proton pump of vacuolar membranes in mature tissues. In growing cells, a large number of metabolic processes produce PPi as by-product; PPi as energizing substrate is avail...