Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
Read More
Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
Read More
By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
Read More
Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
Read More
Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
Read More
The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
Read More
Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
Read More
Eukaryotic cells contain numerous cytosolic and nuclear iron-sulfur (Fe/S) proteins that perform key functions in metabolic catalysis, iron regulation, protein translation, DNA synthesis, and DNA repair. Synthesis of Fe/S clusters and their insertion into apoproteins are essential for viability and are conserved in eukaryotes. The process is ...
Details
Introduction. As cofactors of proteins, iron–sulfur (Fe–S) clusters participate in many important physiological processes, including respiration, photosynthesis, nitrogen fixation, amino acid and purine metabolism, RNA modification, and DNA replication, as well as repair and regulation of gene expression (Beinert et al., 1997; Johnson et al., 2005; Lill, 2009; …
Details
Iron-sulfur [Fe-S] clusters are ubiquitous and evolutionary ancient prosthetic groups that are required to sustain fundamental life processes. Owing to their remarkable structural plasticity and versatile chemical/electronic features [Fe-S] clusters participate in electron transfer, substrate binding/activation, iron/sulfur storage, regulation ...
Details
bonds of the clusters, et al. (Meyer, 2008). Iron-sulfur clusters in some proteins (e.g., thermophilic Fd, a thermostable [2Fe-2S] ferredoxin from hyperthermophilic bacterium Aquifex aeolicus)
Details
Impurities in the iron from the Blast Furnace include carbon, sulfur, phosphorus and silicon, which have to be removed. Removal of sulfur : Sulfur has to be removed first in a separate process. Magnesium powder is blown through the molten iron and the sulfur reacts with …
Details
Ajit Bolar N, Vanlander AV, Wilbrecht C, Van der Aa N, Smet J, De Paepe B, Vandeweyer G, Kooy F, Eyskens F, De Latter E, et al. 2013. Mutation of the iron–sulfur cluster assembly gene IBA57 causes severe myopathy and encephalopathy. Hum Mol Genet 22: 2590–2602 [Google Scholar] Alfonzo JD, Lukes J 2011.
Details
Iron–sulfur (Fe–S) clusters are protein cofactors of a multitude of enzymes performing essential biological functions. Specialized multi-protein machineries present in all types of organisms support their biosynthesis. These machineries encompass a scaffold protein on which Fe–S clusters are assembled and a cysteine desulfurase that provides …
Details
Iron-sulfur proteins are found in all life forms. Most frequently, they contain Fe2S2, Fe3S4, and Fe4S4 clusters. These modular clusters undergo oxidation-reduction reactions, may be inserted or removed from proteins, can influence protein structure by preferential side chain ligation, and can be in …
Details
INTRODUCTION. The maturation of cellular iron-sulfur (Fe/S) proteins in eukaryotes is highly complex and involves more than 25 known biogenesis factors for the de novo synthesis of Fe/S clusters and their insertion into apoproteins (1, 2).The biosynthetic process is initiated by the mitochondrial Fe/S cluster (ISC) assembly …
Details
Extractive metallurgy is the practice of removing valuable metals from an ore and refining the extracted raw metals into purer form. The field of extractive metallurgy encompasses …
Details
In this research, an effort is made to separately introduce the various processes, industrial practices, and fundamental research activities to remove sulfur from iron ores, …
Details
Iron-sulfur proteins are found in all life forms. Most frequently, they contain Fe 2 S 2, Fe 3 S 4, and Fe 4 S 4 clusters. These modular clusters undergo oxidation-reduction reactions, may be inserted or removed from proteins, can influence protein structure by preferential side chain ligation, and can be interconverted.
Details
With the help of a S. oneidensis mutant that lacks a sulfur reductase, Flynn et al. show that microbial sulfur reduction to sulfide is essential for iron(III) reduction at pH 9, because iron reduction is largely driven by abiotic reduction with sulfide. The reaction of sulfide with iron(III) conceals the formation of sulfide, effectively ...
Details
Iron–sulfur clusters rank among the most versatile protein cofactors. Proteins using Fe–S clusters intervene in many cellular processes in both bacteria and eukaryotes. Fe–S cluster biogenesis has been a research area of intensive investigations in the past decade. The success of Fe–S cluster-based biology during evolution is …
Details
The reaction between iron and sulfur is often used to study elements and compounds. Iron sulfide is the compound produced in the reaction. The slideshow shows what happens in this reaction:
Details
The reactivity of sulfidized nanoscale zerovalent iron (SNZVI) is affected by the amount and species of sulfur in the materials. Here, we assess the impact of the Fe (Fe 2+ and Fe 3+) and S (S 2 O 4 2–, S 2–, and S 6 2–) precursors used to synthesize both NZVI and SNZVI on the resulting physicochemical properties and reactivity and …
Details
We performed a series of experiments in the system Fe-FeS at a pressure of 21 GPa and temperatures between 950 and 1400 °C, and we found two new iron-excess iron-sulfur compounds, Fe 3 S and Fe 2 S, formed at subsolidus temperatures. Powder X-ray diffraction data revealed that Fe 3 S has a tetragonal cell, isostructural with Fe 3 P …
Details
The reactions of natural iron pyrite with steam, hydrogen, and carbon monoxide have been studied in a fixed bed tubular reactor at 900-1 100°C. A new process has been …
Details
Iron-sulfur (FeS) proteins are ancient and fundamental to life, being involved in electron transfer and CO2 fixation. ... Parker, E. T. et al. Prebiotic synthesis of methionine and other sulfur ...
Details
Members of the Sediminibacterium genus have been reported as iron oxidizing bacteria 49,50,51; however, ... Bell, E. et al. Active sulfur cycling in the terrestrial deep subsurface.
Details
Using electrochemical methods or europium(II) salts, certain Rieske proteins can be reduced beyond the usual mixed-valence [2Fe–2S] + form to give diamagnetic [2Fe–2S] 0 clusters [29, 30].The iron–sulfur clusters in Rieske proteins are special because one of the iron atoms is coordinated by two histidine residues (Fig. 3).This …
Details
Garcia PS, D'Angelo F, Ollagnier de Choudens S, Dussouchaud M, Bouveret E, Gribaldo S, et al. An early origin of iron–sulfur cluster biosynthesis machineries before Earth oxygenation. Nat Ecol Evol. 2022;6(10):1564–1572. pmid:36109654 . View Article PubMed/NCBI Google Scholar 17.
Details
Bioleaching offers a low-input method of extracting valuable metals from sulfide minerals, which works by exploiting the sulfur and iron metabolisms of microorganisms to break …
Details
For example, in the kinetics and mechanism of reaction of sulfides of copper, iron, and sulfur with slag was studied from the release rate of SO 2 after one-time loading of sulfide samples into the slag melt. ... E. Zholdasbay, et al., "Metal recovery from converter slags using a sulfiding agent," JOM, 70, 2400–2406 (2018); ...
Details
Regulatory proteins that contain an iron-sulfur cluster cofactor constitute a group that is growing both in number and importance, with a range of functions that include sensing of molecular oxygen, stress response, and iron regulation. In all cases, the cluster plays a central role, as a sensory module, in controlling the activity of the ...
Details
Iron-sulfur clusters have critical roles in proteins from diverse organisms and in a broad range of biological processes. Recent discoveries raise exciting challenges for future research by ...
Details
No headers. Iron sulfide proteins involved in electron transfer are called ferredoxins and rubredoxins.*The ferredoxins were discovered first, and were originally classified as bacterial (containing Fe 4 S 4 clusters) and plant (containing Fe 2 S 2 clusters) ferredoxins. This classification is now recognized as being not generally useful, since both Fe 2 S 2 …
Details
Iron-sulfur (Fe-S) clusters are key cofactors for proteins involved in essential cellular processes such as DNA replication and repair, ribosome biogenesis, tRNA thio-modification, and co-enzyme synthesis. ... Hunsicker-Wang LM, Heine A, Chen Y et al (2003) High-resolution structure of the soluble, respiratory-type Rieske protein from …
Details
Sofol is a well-known crusher and grinding mill manufacturer that offers equipment and solutions for customers from aggregates, mining and mineral grinding industry.
You can leave your message here, we'll send you an Email immediately.
Online ChatCopyright ©2000- 2024 Shanghai Sofol CompanySitemap
PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
GET QUOTE