Results 41 to 50 of about 3,274,216 (342)

Spectrophotometric investigations of the reaction between gold(III) and potassium iodide [PDF]

Journal of the Serbian Chemical Society, 2000
The equilibria of the complex formation between AuCl4-n(OH)n- and I- was studied spectrophotometrically in aqueous solutions containing KI:Au(III)
GORDANA MILOVANOVIC, BOJAN RADAK, MIRA CAKAR, SUZANA PREMOVIC, VESNA VASIC   +4 more
doaj   +2 more sources

Binary nucleation in acid–water systems. I. Methanesulfonic acid–water [PDF]

, 1991
Experimental measurements of binary nucleation between methanesulfonic acid and water vapor were carried out for relative acidities (Ra), 0 ...
Flagan, R. C., Okuyama, K., Seinfeld, J. H., Wyslouzil, B. E.   +3 more
core   +1 more source

The Dissociation Constants of Tetrahydrofolic Acid

Journal of Biological Chemistry, 1966
Six dissociable groups exist in tetrahydrofolic acid in the range H0 -3.0 to pH 14. The assignments in tetrahydrofolic acid by titrimetric and spectrophotometric comparisons with model compounds, p-aminobenzoylglutamic acid and 2-amino-6,7-dimethyl-5,6,7,8-tetrahydro-4-pteridinone, are as follows: acidic ionization of amide, pK' 10.5; N5, pK' 4.82; γ ...
R G, Kallen, W P, Jencks
openaire   +2 more sources

Catalytic Cycle of Multicopper Oxidases Studied by Combined Quantum- and Molecular-Mechanical Free-Energy Perturbation Methods [PDF]

, 2015
We have used combined quantum mechanical and molecular mechanical free-energy perturbation methods in combination with explicit solvent simulations to study the reaction mechanism of the multicopper oxidases, in particular the regeneration of the ...
Alexov E., Augustine A. J., Barone V., Becke A. D., Bento I., Bento I., Bento I., Berendsen H. J. C., Besler B. H., Blumberger J., Boresch S., Böttcher C. J. F., Cascella M., Chalupský J., Cheng J., Claus H., Cracknell J. A., Darden T., Datta S. N., Dunitz J. D., Eichkorn K., Eichkorn K., Essmann U., Ghosh N., Giardina P., Grimme S., Grimme S., Heimdal J., Heppner D. E., Heppner D. E., Hong G., Hornak V., Hu L., Hu L., Hummer G., Irudayam S. J., Jensen F., Jensen K. P., Jilai Li, Jorgensen W. L., Katekaew S., Kaukonen M., Kelly C. P., Kjaergaard C. H., Klingen A. R., Kollman P. A., Kuhn B., Kästner J., Lee C., Lee S.-K., Li H., Li J. L., Lubomír Rulíšek, Marenich A. V., Maryam Farrokhnia, Messerschmidt A., Miura Y., Noodleman L., Noodleman L., Olsson M. H. M., Onufriev A., Orozco M., Perdew J. P., Quintanar L., Quintanar L., Rappoport D., Riccardi D., Riccardi D., Roberts S. A., Rod T. H., Rod T. H., Rulíšek L., Rulíšek L., Rulíšek L., Ryckaert J.-P., Ryde U., Ryde U., Ryde U., Ryde U., Schutz C. N., Sharp K. A., Shin W., Solomon E. I., Solomon E. I., Solomon E. I., Solomon E. I., Srnec M., Ulf Ryde, Ullmann G. M., Ullmann G. M., Vancoillie S., Weigend F., Weis A., Yang W., Yoon J., Yoon J., Yoon J., Zhekova H., Åqvist J.   +98 more
core   +3 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Extending the semi-empirical PM6 method for carbon oxyacid pKa prediction to sulfonic acids: Application towards congener-specific estimates for the environmentally and toxicologically relevant C1 through C8 perfluoroalkyl derivatives [PDF]

, 2009
A positive bias in the semi-empirical PM6 method for estimating pKa values of sulfonic acids was corrected by a correlation developed between non-adjusted PM6 pKa values and the corresponding experimentally obtained/estimated acidity constants for a ...
Kaya Forest, Ken J. Friesen, Sierra Rayne   +2 more
core   +1 more source

Gas-phase acidity of sulfonamides: implications for reactivity and prodrug design [PDF]

, 2005
A computational study at the density functional theory level was performed on bioactive and model sulfonamides with the aim of determining the factors affecting the acidity of the sulfonamido group.
Gomes, JRB, Gomes, P
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

A simple reactive-transport model of calcite precipitation in soils and other porous media [PDF]

, 2015
Calcite formation in soils and other porous media generally occurs around a localised source of reactants, such as a plant root or soil macro-pore, and the rate depends on the transport of reactants to and from the precipitation zone as well as the ...
Kirk, Guy J. D., Milodowski, A. E., Ritz, K., Versteegen, A.   +3 more
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source