What is the concentration of OH in a solution that is 0.25 trimethylammonium nitrate? Determine the concentration of the cation and anion in a 0.15 M Cr2(SO4)3 solution. What is the molar concentration of Na^+ ions in 0.035 M solutions of the follo...
This apparent reversal of cation/anion selectivity is intriguing, and it suggests a key role of the pore passageway in ion permeation across the membrane. Channel gating. The well-defined series of water molecules through each protomer of the high-resolution type 2a SaTRIC structure (Figs 3 ...
Step 3. The enzyme solution was dialyzed against buŠer A before the anion-exchange chromatography. The dialyzate was put on a DEAE-Sephadex A-25 column for chromatography (Amersham Pharmacia Biotech., Sweden) (3×40 cm). The non-adsorbed fraction was collected as the lipase fraction. This...
This work aims to study the effect of NaCl, KCl, NH4Cl, CaCl2 or MgCl2 on the solubility of two glycine derivatives, glycylglycine (a.k.a. diglycine) and N-acetylglycine, and to understand the nature of the interactions present on these systems. Experimentally, upon increasing the ...
First, we compared the cation versus anion selectivity of human and baboon APOL1 by measuring the reversal potential (Erev) in the presence of an increasing cis:trans KCl gradient (Fig. 6A). If the channel pore is nonselective, then KCl will diffuse down its concentration gradient with no ...
This work aims to study the effect of NaCl, KCl, NH4Cl, CaCl2 or MgCl2 on the solubility of two glycine derivatives, glycylglycine (a.k.a. diglycine) and N-acetylglycine, and to understand the nature of the interactions present on these systems. Experimentally, upon increasing the ...
coming out through a medium basicity anion exchanger; (3) passing soln. obtd. through a strongly basic anion exchanger (4) passing soln. obtd. through a cation exchanger and (5) sepg. and recovering the tartaric acid present in extracts from regeneration of the extractors, as a salt esp....
Similarly, although claudin-15 alone does not alter the relative preference of the paracellular pathway between Na+ and Cl−, mutating anionic extracellular residues to cationic ones makes the paracellular pathway more anion-selective (21). Thus, the contention that claudins have a direct role in...
coming out through a medium basicity anion exchanger; (3) passing soln. obtd. through a strongly basic anion exchanger (4) passing soln. obtd. through a cation exchanger and (5) sepg. and recovering the tartaric acid present in extracts from regeneration of the extractors, as a salt esp....
However, the interfacial nanogaps that were present in the functional layer of the decorated membrane cannot be fully avoided [18]. ZIF-8 has a small aperture with a size of 3.4 Å and a comparatively large cavity with a size of 11.6 Å [19]. The small aperture of ZIF-8 can serve...