نتایج جستجو برای: sulfur components
تعداد نتایج: 421130 فیلتر نتایج به سال:
Iron-sulfur clusters are prosthetic groups composed of sulfur and iron that are found in respiratory chain complexes and numerous enzymes. Iron-sulfur clusters are synthesized in a multistep process that utilizes cysteine desulfurases, scaffold proteins, chaperones, and iron donors. Assembly of iron-sulfur clusters occurs in the mitochondrial matrix of mammalian cells, but cytosolic isoforms of...
Detection of sulfur-fumigated Paeoniae Alba Radix (PAR) in different complex preparations is challenging due to the relatively lower content of PAR and interference from more complicated components in complex preparations with different multiple constituent herbs. In this study, a high performance liquid chromatography- triple-quadrupole tandem mass spectrometry method was developed for detecti...
Analysis of the very-low-sulfur fuel oil (VLSFO) and ultra-low-sulfur (ULSFO) bunkered in key ports Asia, Middle East, North America, Western Europe, Russia is presented. The characteristics said fuels, including density, sulfur content, kinematic viscosity, aluminum silicon vanadium nickel as well pour point are investigated. Furthermore, main trends correlations also discussed. Based on graph...
Iron/sulfur cluster (ISC)-containing proteins are essential components of cells. In most eukaryotes, Fe/S clusters are synthesized by the mitochondrial ISC machinery, the cytosolic iron/sulfur assembly system, and, in photosynthetic species, a plastid sulfur-mobilization (SUF) system. Here we show that the anaerobic human protozoan parasite Blastocystis, in addition to possessing ISC and iron/s...
Mitochondria are responsible for the synthesis of both iron-sulfur clusters and heme, but the potential connection between the two major iron-consuming pathways is unknown. Here, we have shown that mutants in the yeast mitochondrial iron-sulfur cluster (ISC) assembly machinery displayed reduced cytochrome levels and diminished activity of the heme-containing cytochrome c oxidase, in addition to...
BACKGROUND Studies have shown associations between mortality and long-term exposure to particulate matter air pollution. Few cohort studies have estimated the effects of the elemental composition of particulate matter on mortality. OBJECTIVES Our aim was to study the association between natural-cause mortality and long-term exposure to elemental components of particulate matter. METHODS Mor...
In order to study the effect of phosphate biofertilizer and chemical fertilizers of nitrogen, phosphorus and sulfur on some growth and yield components of Camelina sativa L., a study was conducted based on a factorial experiment; this was done in a randomized complete block design with three replications at Kazeroon during the 2016 growing season. Treatments included bio-based phosphorus (P)...
The sulfur K-edge x-ray absorption spectra for the amino acids cysteine and methionine and their corresponding oxidized forms cystine and methionine sulfoxide are presented. Distinct differences in the shape of the edge and the inflection point energy for cysteine and cystine are observed. For methionine sulfoxide the inflection point energy is 2.8 eV higher compared with methionine. Glutathion...
introduction:nitrate entrance to water bodies can cause eutrophication and decrease quality of them, furthermore it can effect on human health so concentration of nitrate must be at defined standard level. there are several methods for reduction or removal of nitrate in water such as ion exchange, reverse osmosis, electrodialysis and denitrification. microbial denitrification of nitrate in anox...
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