Genome-wide expression techniques are being increasingly used to assess the effects of environmental contaminants. Oligonucleotide or cDNA microarray methods make possible the screening of large numbers of known sequences for a given model species, while differential display analysis makes possible analysis of the expression of all the genes from any species. We report a comparison of two curre...

In the title compound, [Pd(C(7)H(7)O(3)S)(2)(C(13)H(14)N(2))(2)](n), the metal ion, located on a twofold rotation axis, exhibits a slightly distorted octa-hedral coordination environment, with bond angles that deviate by at most 2.2° from an ideal geometry, completed by two O atoms from two deprotonated p-toluene-sulfonic acid ligands and four N atoms from four 1,3-di-4-pyridylpropane ligands. ...

Introduction Perfluorinated chemicals have been widely used in commerce for the last few decades. Until recently little was known about their environmental fate and even less was known about their potential environmental effects. Since Giesy and co-workers first demonstrated the widespread occurrence of perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) in wildlife there has...

OBJECTIVES The objective of this study was to evaluate the biodegradation potential of four perfluorooctane sulfonic acid (PFOS) alternatives that were developed at Changwon National University. While PFOS has been used widely in industrial and consumer products, it is known to be a persistent organic pollutant. Therefore, greener alternatives are highly desirable. METHODS Biodegradation test...

Human peroxiredoxins serve dual roles as anti-oxidants and regulators of H(2)O(2)-mediated cell signaling. The functional versatility of peroxiredoxins depends on progressive oxidation of key cysteine residues. The sulfinic or sulfonic forms of peroxiredoxin lose their peroxidase activity, which allows cells to accumulate H(2)O(2) for signaling or pathogenesis in inflammation, cancer, and other...

Enzymes can activate otherwise unreactive substrates by using residues precisely located in the active sites. We herein report on a Ga porphyrin which bears second-sphere sulfonic group (named as 1) and its high efficiency for electrocatalytic hydrogen evolution reaction (HER). Complex 1 achieve large TOF value of 1.3 × 105 s−1 at low 295-mV overpotential with weak acetic acid (HOAc) proton sou...