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 ...
The aim of the work is to establish a general methodology for the study of protons in solids. The calculations involve the use of quantum-mechanical clusters with a point-charge representation of the surrounding lattice. It was found to be possible to obtain potentials which accurately reproduce ...
At low pH in the inward-facing state of NhaA, protons are bound to Asp164 and Lys300; the latter forms a salt bridge with the deprotonated Asp163. Sodium entrance to the active site results in binding to Asp163 and Asp164. The former leads to the breakage of the salt bridge and ...
This can be explained by the reasoning that d(TC5) releases protons that bind to poly(A), causing conformational changes. Next, an intramolecular d(TC5) complex with a melting temperature above that of poly(A) was generated in experiment. In this case, the melting temperature of the ...
Several modulatory motifs have been seen in studies of the exchanger that may explain some of the tissue specific differences. Interestingly the modulation of the Na/Ca exchanger (for example, by protons, sodium, calcium, ATP, calmodulin) seems to arise from interactions with the intracellular ...
NHXs can be localized in the tonoplast or plasma membranes, where they exchange sodium ions for protons, resulting in sodium ions being removed from the cytosol into the vacuole or extracellular space. The expression of most plant NHX genes is modulated by exposure of the organisms to salt ...
He named the new metal sodium, because he had used caustic soda or, more simply, soda, as his source of the element.(2),(3) In Germany caustic soda was known as natronlauge and L. W. Gilbert suggested the new element should be called natronium. ...
Date of discovery: 1807Name origin: English sodaAppearance: silveryDiscoverer: Sir Humphry DavyObtained from: table salts Melting point: 370.87 KBoiling point: 1156 KDensity[kg/m3]: 968Molar volume: 23.78 × 10-6 m3/molProtons/Electrons: 11Neutrons: 12Shell structure: 2,8,1Electron ...
Acidic protons in zeolites are known to be mobile at elevated temperatures. In this study, density functional theory was used to identify the reaction path... JA Ryder,AK Chakraborty,AT Bell - 《Journal of Physical Chemistry B》 被引量: 157发表: 2000年 Influence of interfacial hydrogen and ...
An element is a pure substance made up of only one type of atom (the simplest unit of an element comprises sub-atomic particles: electrons, protons, and neutrons). In addition, an element cannot be decomposed by any chemical reaction into simpler substances. Group 1 elements, also known as...