Radius of an octahedral void relative to the radius of the spheres in a close packing is:

Monovalent cation effects on the activity of the xenobiotic/medium-chain fatty acid:CoA ligases are substrate specific. Vessey DA(1), Kelley M, Lau E, Zhang SZ. Author information: (1)Department of Veterans' Affairs Medical Center, San Francisco, CA 94121, USA. vessey.donald a@sanfrancisco.va.gov

Monovalent cation effects on intermolecular purine-purine-pyrimidine triple-helix formation Ann-Joy Cheng and Michael W.Van Dyke* Department of Tumor Biology, The University of Texas M.D.Anderson 2014-11-30 A monovalent cation acts as structural and catalytic cofactor in translational GTPases Bernhard Kuhle* & Ralf Ficner Abstract Translational GTPases are universally conserved GTP hydrolyzing enzymes, critical for fidelity and speed of ribosomal protein biosynthesis. Despite their central roles, the … 1999-07-02 We identified and characterized Vnx1p, a novel vacuolar monovalent cation/H+ antiporter encoded by the open reading frame YNL321w from Saccharomyces cerevisiae. Despite the homology of Vnx1p with other members of the CAX (calcium exchanger) family of transporters, Vnx1p is unable to mediate Ca2+ transport but is a low affinity Na+/H+ and K+/H+ anti-porter with a Km of 22.4 and 82.2 mm for Na+ One cation is buried in a closed cavity between insulin dimers and is stabilized by interaction with protein carbonyl dipoles in two juxtaposed alternate positions related by the crystal dyad Two localized monovalent cation binding sites have been identified in cubic insulin from 2.8 A-resolution difference electron density maps comparing crystals in which the Na+ ions have been replaced 2011-03-01 Monovalent Cation Marker/Reporter Enzymes Ribonucleases - Part B Proteases in Health and Disease Advances in Microbial Systems Biology Behavior-modifying drugs Characteristics, Pathophysiology, and Effects of Common Toxic Substances Drug and Hormone Effects on Vitamin D Metabolism DEPRESSION AND Monovalent Cation Behavior-modifying drugs. Lithium is a monovalent cation that is used, particularly for acute mania in humans, as an Drug and Hormone Effects on Vitamin D Metabolism.

Monovalent cation

DFT calculation results show that the Ag-, Cu-, and Na-based perovskites possess a cubic double perovskite structure with small indirect bandgaps, whereas the K-, Rb-, and Cs-based systems exhibit a monoclinic structure with relatively large indirect bandgaps. The monovalent-cation-binding site of a catalytic RNA has also been described by x-ray crystallography . Monovalent cations activate enzymes in essentially two ways , either by forming a ternary complex with enzyme and substrate or allosterically. The two mechanisms are easily distinguishable. The effect of monovalent cations on the thermal stability of a small model DNA hairpin has been measured by capillary electrophoresis, using an oligomer with 16 thymine residues as an unstructured control.

Monovalent-cation-activated enzymes are abundantly represented in plants and in the animal world. Most of these enzymes are specifically activated by K+, whereas a few of them show preferential activation by Na+. The monovalent cation specificity of these enzymes remains elusive in molecular terms and has not been reengineered by site-directed mutagenesis. Here we demonstrate that thrombin, a

Owning to the distinguished functions, MCPMs have been extensively investigated in different applications. The effect of monovalent cation on the activity of the XL-I and XL-III forms of xenobiotic/medium-chain fatty acid:CoA ligase (XM-ligase) was investigated using a variety of different carboxylic acid substrates. With benzoate or p-hydroxybenzoate as substrate, the XL-I ligase was essentially inactive in the absence of monovalent cation. Den monovalenta katjonen: Proton Antiporter-1 (CPA1) -familjen ( TC # 2.A.36 ) är en stor familj av proteiner som härrör från Gram-positiva och Gram-negativa bakterier, blågröna bakterier , archaea , jäst , växter och djur .

We identified and characterized Vnx1p, a novel vacuolar monovalent cation/H+ antiporter encoded by the open reading frame YNL321w from Saccharomyces cerevisiae. Despite the homology of Vnx1p with other members of the CAX (calcium exchanger) family of transporters, Vnx1p is unable to mediate Ca2+ transport but is a low affinity Na+/H+ and K+/H+ anti-porter with a Km of 22.4 and 82.2 mm for Na+

Monovalent cation currents were measured by use of the whole cell patch clamp technique in cells dialysed with 10 mM BAPTA or 10 mM EGTA to prevent the fast Ca (2+) dependent inactivation of ECaC1. 3. Monovalent cation selective ion-exchange membranes are developed by forming the polycation layer on the surface of the cation-exchange membrane as illustrated in Fig. 1 for preventing CaSO 4 precipitation in electrodialytic seawater concentration. The enzyme also requires the monovalent cation K+ for optimal activity. The K+ ion activates the enzyme 100-fold with an activation constant of 6 mM, well below the physiologic concentration of K+ in E. coli.

Lithium is a monovalent cation that is used, particularly for acute mania in humans, as an Drug and Hormone Effects on Vitamin D Metabolism. Lithium is a monovalent cation and is widely used in the management of DEPRESSION AND ANXIETY. Adina 2011-03-28 2003-11-25 This monovalent cation site controls enzyme activity: (i) PFL-AE in the absence of any simple monovalent cations has little-no activity; and (ii) among monocations, going down Group 1 of the periodic table from Li + to Cs +, PFL-AE activity sharply maximizes at K +, with NH 4+ closely matching the efficacy of K +. The effect of monovalent cation on the activity of the XL-I and XL-III forms of xenobiotic/medium-chain fatty acid:CoA ligase (XM-ligase) was investigated using a variety of different carboxylic acid substrates. With benzoate or p-hydroxybenzoate as substrate, the XL-I ligase was essentially inactive in the absence of monovalent cation. 2020-10-08 In this work, monovalent cation-phenolic crystals contained K⁺ or Na⁺ ions were synthesized by using plant polyphenol as an organic … The conversion of renewable plant polyphenol to advanced materials with tailorable properties and various functions is desirable and challenging.
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13 May 2018 Both of these are cations. Examples of single-charge polyatomic anions include hydroxide (OH-), which combines with hydronium in acid-base Metal elements always form cations, non-metals always form anions.

Ion transport characteristics of the membranes were established for the monovalent ions Li + and K + and the separation of these ions by the cation exchange membranes was investigated. Diffusion experiments for aqueous KCl, LiCl and their mixtures were carried out with pure SPEEK membranes as well as with the CPAEK/SPEEK membranes.
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composition, cation exchange capacity, exchangeable cations, and mineralogy. low cation concentration. Exploring monovalent copper.

2011-04-19 · The effect of monovalent cations on the thermal stability of a small model DNA hairpin has been measured by capillary electrophoresis, using an oligomer with 16 thymine residues as an unstructured control. The stabilizing ability of a monovalent cation depends on its unhydrated ionic radius, and at a low monovalent cation concentration and saturating Mg(2+), there is a (calculated) net release of a single monovalent cation/RNA molecule when tertiary structure is denatured. 2017-11-01 · As the name suggests, monovalent cation perm-selective membranes (MCPMs) allow the high permeation of monovalent cations, while retaining the selective passage of multivalent cations . Owning to the distinguished functions, MCPMs have been extensively investigated in different applications. The effect of monovalent cation on the activity of the XL-I and XL-III forms of xenobiotic/medium-chain fatty acid:CoA ligase (XM-ligase) was investigated using a variety of different carboxylic acid substrates.