bringing a half negative charge. In addition, the phenolic group with a pKa of 7.3 is one third ionized, bringing a 0.33 negative charge, and the two remaining phenolic groups bring a 0.17 negative charge. Thus, the phenolic groups are canceling one positive charge of the two amine groups....
Synthesis, crystal structures and properties of ternary copper(II) complexes having 2,2′-bipyridine and α-amino acid salicylaldiminates as models for the... complexes display a distorted square-pyramidal (4+1) coordination geometry in which the ONO-donor Schiff base is bonded to the metal in...
The two variants of the α-form of the catalytic (C) subunit of protein kinase A (PKA), designated Cα1 and Cα2, are encoded by the PRKACA gene. Whereas Cα1 is ubiquitous, Cα2 expression is restricted to the sperm cell. Cα1 and Cα2 are encoded with
This feature is supported by the results of the structure determination of 2, which displays a head-head orientation of the two bases and intramolecular H-bonding between the amine group of 1 ,9-DimeA and the amino group of 1 ,9-DimeAH. In the fully deprotonated species trans-[(NH3)2Pt...
For example, the residues histidine, lysine, and arginine are Lewis bases. This is because they can all donate a lone pair of electrons. Histidine from the non-delocalized lone pair on the imidazole side chain; lysine from the terminal amine group, and arginine from the guanidino group. ...
different from sulfur or furan; R2 and R3 are independently selected between hydrogen, C1-4 hydrogen carbide and C1-4 toxic acid, in which hydrogen carbide and acid compounds are replaced by one or more substitutes selected from fluorine, hydroxyl, cyanogen, amino, methyleneamine and dimethylamine...