Results 51 to 60 of about 4,277,838 (300)
, 2014 Effects of ionic strength and amino acid substitutions on the dissociation constant for AggAdsA-fibronectin binding.
Natalia Pakharukova (631544) +15 more
core +1 more source
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
pKa Determination of a Histidine Residue in a Short Peptide Using Raman Spectroscopy
Molecules, 2019 Determining the pKa of key functional groups is critical to understanding the pH-dependent behavior of biological proteins and peptide-based biomaterials.
Brett H. Pogostin +3 more
doaj +1 more source
Frontiers in Plant Science, 2020 Recent reports of acetic acid-induced drought tolerance and avoidance across a diverse range of plant species encourage consideration of this low-cost commodity organic acid as a biostimulant.
Megan M. Allen, Damian J. Allen
doaj +1 more source
Molecules, 2022 The acid dissociation constant of three benzimidazoles, namely 2,2′-bibenzo[d]imidazole, 2,5′-bibenzo[d]imidazole, and 5,5′-bibenzo[d]imidazole, have been investigated by means of density functional theory calculations in gas phase and in aqueous ...
Liudmil Antonov +2 more
doaj +1 more source
Dissociation Constants of Hexosephosphoric Acids.
Experimental Biology and Medicine, 1927 Hexosediphosphoric acid from yeast and hexosemonophosphoric acid from muscle (lactacidogen) were kindly made available from preparations by Professor Embden. Electrometric titration showed both stronger than pure phosphoric acid in the region of the first and, more conspicuously, in that of the second dissociation constant.
L. Irving, E. Fischer
openaire +1 more source
Hydrogen ion acceptance by urea from hydrochloric and acetic acids: Altered dissociation constant of acetic acid [PDF]
, 1990 774-778The interaction of urea with H+ ion of HCl and CH3COOH has been investigated by conductimetric and pH-metric methods. Urea significantly affects conductance and pH of HCl and CH3COOH; the effective dissociation constant of the latter is ...
Jana, P K, Moulik, S P
core
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Influence of Metal Ion Complexation on the Acid Dissociation of 4'-Carboxybenzo-24-Crown-8 in an Ethanol-Water Mixture [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 1997 A spectrophotometric method was used to determine the acidity constant of 4'-carboxybenzo-24-crown-8 in 52% (w/w) ethanol-water mixture. The acid dissociation constant, Ka, was found to increase in the presence of Na+, K+, Rb+, Cs+ and Tl+ ions.
Ahmad Rouhollahi +3 more
doaj
Dissociation Constants and Dissociation Velocities of Substituted Pyruvic Acids [PDF]
Nature, 1950 IT has been shown1 that weak acids are very often reduced polarographically in two steps. The more positive step belongs to the undissociated acid, the more negative to the acid ion. The total height of these two steps remains constant; but their ratio is changed in a characteristic way with the pH of the solution. If we plot this ratio against the pH,
E. G. CLAIR, K. WIESNER
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