We compared the transcriptomes of Saccharomyces cerevisiae cells growing under steady-state conditions on 21 unique sources of nitrogen. We found 506 genes differentially regulated by nitrogen and estimated the activation degrees of all identified nitrogen-responding transcriptional controls according to the nitrogen source. One main group of nitrogenous compounds supports fast growth and a hig...

Due to the high versatility of Polyurethane (PUR), its share amongst synthetic polymers manufacture consumer goods is increasing. This study proposes, tests and validates through pilot processing a highly efficient method for carbon recovery PUR in form an oil phase concentrated using hydrothermal liquefaction (HTL). Hot liquid water mixed with residues lignocellulosic material (two species Mis...

The Clostridium acetobutylicum glutamine synthetase (GS) DNA region is characterized by a downstream promoter, P3, oriented toward the glnA gene, which controls the transcription of an RNA complementary to the start of the glnA mRNA. Expression of the predicted 43-base antisense RNA was demonstrated in C. acetobutylicum and Escherichia coli cells containing the cloned glnA DNA. Antisense RNA tr...

Introduction Nitrogen, like many other chemical elements, has catenation ability. The variety and multiplicity of molecular structures with nitrogen-nitrogen bond is significantly smaller than for carbon. Such compounds are of particular interest as potential high-energy density materials (HEDM) [1], because they can undergo exothermic reaction Nx → (x/2)N2 releasing 50 kcal/mol or more per one...

Nitrogen mustards are powerful inhibitors for choline oxidase, acetylcholine esterase, and choline acetylase, half-inhibition of the first enzyme being produced with concentrations around 1 x 10(-6)M; i.e., ten times less than the LD(50) values. Acetylcholine esterase and choline acetylase required higher concentrations. This inhibition seems to be due to the structural similarity of the ethyle...