(n.) An electro-negative element, or the element which, in electro-chemical decompositions, is evolved at the anode; -- opposed to cation.
Example Sentences:
(1) Both SAA and non-SAA enhanced ammonium excretion but only non-SAA enhanced organic anion excretion, an indicator of incomplete oxidation of organic acids.
(2) In the presence of high external Cl, a component of outward current that was inhibited by the anion channel blocker diphenylamine-2-carboxylate (DPC) appeared in 70% of the cells.
(3) Cell viability, ability to generate superoxide anion, and chemotaxis were found to be unaltered both before and after labeling.
(4) Interaction of viable macrophages with cationic particles at 37 degrees C resulted in their "internalization" within vesicles and coated pits and a closer apposition between many segments of plasmalemma than with neutral or anionic substances.
(5) In general, enzyme activity was strongly reduced by heavy metal inorganic cations; less strongly by organometallic cations, some anions, and certain pesticides; and weakly inhibited by light metal cations and organometallic and organic compounds.
(6) The order in which anions supported uptake was Cl- = SCN- greater than F- greater than NO3- = SO2(-4) for beta-alanine, whereas it was SCN- greater than F- = Cl- = NO3- greater than SO2(-4) for L-alpha-alanine.
(7) Moreover, it is the recombinant p70 polypeptides of slowest mobility that coelute with S6 kinase activity on anion-exchange chromatography.
(8) Superoxide anion (O2.-) was photogenerated upon illumination of riboflavin in fluorescent light.
(9) At hypothyroid patients there is an ADP excess which is degenerated to xanthine, the substrate of xanthine oxidase resulting in toxic anion superoxide and UA.
(10) The sigmoidal shape of the curve of rate constant vs mole percent anionic lipid is consistent with a positively cooperative effect of the negative surface charge.
(11) The changes included swelling, blunting, and flattening of epithelial foot processes, were accompanied by decreased stainability of glomerular anionic sites, and were largely reversed by subsequent perfusion with the polyanion heparin.
(12) The granules of human large granular lymphocytes have been reported to contain, in addition to perforin, a soluble HRF activity that can be eluted from anion-exchange columns at 115 mM NaCl.
(13) The channels studied here were more selective for monovalent cations than anions, but also showed some permeability to anions and larger electrolytes, suggesting a large functional pore diameter.
(14) The reduction of cytochrome c was found to be sensitive to both anaerobiosis and superoxide dismutase, suggesting the involvement of superoxide anions with this electron acceptor.
(15) The porins are a class of voltage-dependent, anion-selective, channel-forming proteins located in the outer mitochondrial membrane (OMM).
(16) In 254 findings of the acid-base balance ions and proteins, the authors evaluated mutual relations between the acid-base balance and calculation from the anion column.
(17) Proceeding from the observation that organic anions bound to albumin have hepatic extraction fractions that are unexpectedly high, we have studied a distributed model that accounts for this phenomenon by invoking sites on the cell surface that catalyze the dissociation of albumin-anion complexes.
(18) 6) The subunits alpha and beta of bovine follitropin were obtained by incubation in acidic urea, the chains being then separated by anion exchange chromatography.
(19) Here we report that phenol hydroxylation to hydroquinone is also catalyzed by human myeloperoxidase in the presence of a superoxide anion radical generating system, hypoxanthine and xanthine oxidase.
(20) The oxidation of the anion radical intermediate by O2 to the parent nitro compound is proposed to account for the well-known O2 inhibition of microsomal nitroreductase.
Ferrate
Definition:
(n.) A salt of ferric acid.
Example Sentences:
(1) Inhibition was prevented by competitive inhibitors or substrates, indicating that the action of ferrate was site-specific.
(2) The results allow to expect that a reactive histidine is present in enzyme's active site and that this aminoacid is modified with ferrate.
(3) It was also shown that the enzyme was inactivated with ferrate ion, structural analogue of orthophosphate and strong oxidizing agent.
(4) Amino acid analysis indicated that methionine 512 is the target site in this peptide for ferrate oxidation.
(5) Potassium ferrate is a very strong oxidant and is highly soluble in water.
(6) Nitrosamines, which are potent carcinogens, are widespread throughout the environment and can be eliminated from waste water effluent by the action of potassium ferrate.
(7) Treatment of murine leukemia virus reverse transcriptase (MuLV RT) with potassium ferrate, an oxidizing agent known to oxidize amino acids involved in phosphate binding domains of proteins, results in the irreversible inactivation of both the DNA polymerase and the RNase H activities.
(8) Ferrate inactivation at pH 5.0 is accompanied by the modification of only one amino acid.
(9) Two compounds, a zeolite, clinoptilolite, and a ferrocyanide, potassium hexacyanocobalt (II) ferrate (II), were found to be the most effective adsorbers of caesium in vitro.
(10) Activation is shown to be strictly a redox process and can be rapidly accomplished by using ferricyanide, cobalt terpyridine or tetracyanomonophenanthroline ferrate, and a control electrode to control solution potential.
(11) Potassium ferrate (K2FeO4) is useful in the advanced treatment of waste water.
(12) Methionine was measured on the basis of color reaction with sodium pentacyano-nitrosyl-ferrate in alkaline solution.
(13) It makes me think of Arnold Bennett, whose novels financed the purchasing of yachts, or Somerset Maugham, who retired to a villa in Cap Ferrat.
(14) Analogous electron-transfer reactions between soluble iron and bis(dipicolinato)cobaltate(III) or bis(dipicolinato)ferrate(II) were studied by stopped-flow spectrophotometry under solution conditions identical with those of the rusticyanin experiments.
(15) Amino acid sequence analysis of peptides I and II suggested Lys-285 and Cys-635 as the probable sites of ferrate action.
(16) Among complexes studied here, the bis(o-xylyldithiolato) ferrate(III) monoanion gave the MCD spectrum which resembles that of a rubredoxin.
(17) Potassium ferrate, an analog of orthophosphate and a potent oxidizing agent, was found to irreversibly inactivate porcine muscle adenylate kinase.
(18) Also extracted from the membranes is the ferrated form of MAIC, FeMAIC.
(19) In addition, comparative high pressure liquid chromatography tryptic peptide maps obtained before and after ferrate oxidation demonstrated that only five peptides of the more than 60 peptide peaks present in the tryptic digest underwent a major change in either peak position or intensity as a result of ferrate treatment.
(20) Potassium ferrate and the nitrosamine was placed in aqueous solution and allowed to react to completion.