Two prototropic forms of glucose oxidase undergo aerobic oxidation reactions that convert FADH(-) to FAD and form H(2)O(2) as a product. Limiting rate constants of k(cat)K(M)(O(2)) = (5.7 +/- 1.8) x 10(2) M(-1).s(-1) and k(cat)K(M)(O(2)) = (1.5 +/- 0.3) x 10(6) M(-1).s(-1) are observed at high and low pH, respectively. Reactions exhibit oxygen-18 kinetic isotope effects but no solvent kinetic i...

Radioastronomy is a powerful tool for the discovery of molecules in space but it requires molecular species to be polar. The observation apolar can however enabled by protonation, which occurs from reaction with abundant H3</mml:mr...

The stability of coordination compounds metal ions with ligands is fundamental importance for elaborating upon practical sensors the detection and quantification in environmental samples. In this work, constants silver(I) complexes 2-mercaptoimidazole (2MI) a mixed water–dimethyl sulfoxide (DMSO) solvent were determined at 298.15 K 308.15 K. It was found that increasing temperature, decreases. ...

Intrinsically microporous polyamines (PIM-EA-TB) provide tertiary amine binding sites for protons and in this way allow switching/gating from a low ionic conductivity state to semipermeable anion through micropores. In ethanolic NaClO4 media PIM-EA-TB films (approx. 10 μm thick; deposited asymmetrically onto diameter microhole 5 thick Teflon) is lowered by ion exclusion compared observed aqueou...

A novel synthesis of 3-fold symmetric, homochiral tris(2-alkyl-2-aminoethyl)amine (TREN) derivatives is presented. The synthesis is general in scope, starting from readily prepared chiral alpha-amino aldehydes. The optical purity of the N-BOC protected derivatives of tris(2-methyl-2-aminoethyl)amine and tris(2-hydroxymethyl-2-aminoethyl)amine has been ascertained by polarimetry and chiral NMR c...

p53 tumor suppressor gene, also known as “genome guardian” is mutated in more than half of allkind of cancers. in this study we have investigated the controls of environmental ph for p53 genemutation in point of specific sequence which is prone to mutagenesis. the most probable cancerousmutations occur as point mutations in exons 5-8 of p53 gene. the 175th codon of p53 is the thirdmost mutated ...

Let f(z) be a function analytic in the complex domain C+∪C−∪(−1,+∞), real for real z and such that f(z), f2(z) are anti-Herglotz functions. In this paper we show that f(z) possesses simple upper and lower bounds given by rational functions. Our main tool is the analytic theory of continued fractions. An application to the theory of solutions of the Feigenbaum-Cvitanović equation is given.

We present a simple protocol for two-player secure circuit evaluation. The protocol enables players C and D to cooperate in the computation of f(x) while D conceals her data x from C and C conceals his circuit for f from D. The protocol is based on the technique of hiding information from an oracle [Abadi, Feigenbaum, Kilian, J. Comput. System Sci. 39(1):21{50, August, 1989].

In this paper, we develop a new approach to the construction of solutions of the Feigenbaum-Cvitanović equation whose existence was shown by H. Epstein. Our main tool is the analytic theory of continued fractions.