Results 51 to 60 of about 38,650 (270)
The Spectroscopy of Nitrogenases [PDF]
Chemical Reviews, 2020 Nitrogenases are responsible for biological nitrogen fixation, a crucial step in the biogeochemical nitrogen cycle. These enzymes utilize a two-component protein system and a series of iron-sulfur clusters to perform this reaction, culminating at the FeMco active site (M = Mo, V, Fe), which is capable of binding and reducing N2 to 2NH3. In this review,
Casey Van Stappen +6 more
openaire +3 more sources
The Application of Carbon Dots in Crops for Sustainable Agriculture
ChemistryEurope, EarlyView.Carbon dots serve as versatile nanoagents across the crop life cycle. They promote plant growth and photosynthesis, enhance resilience to biotic and abiotic stresses, aid in postharvest preservation, and enable sensitive detection of contaminants.
Xue Li +4 more
wiley +1 more source
On the Shoulders of Giants—Reaching for Nitrogenase
Molecules, 2023 Only a single enzyme system—nitrogenase—carries out the conversion of atmospheric N2 into bioavailable ammonium, an essential prerequisite for all organismic life.
Oliver Einsle
doaj +1 more source
Evidence That the P\u3csub\u3ei\u3c/sub\u3e Release Event Is the Rate-Limiting Step in the Nitrogenase Catalytic Cycle [PDF]
, 2016 Nitrogenase reduction of dinitrogen (N2) to ammonia (NH3) involves a sequence of events that occur upon the transient association of the reduced Fe protein containing two ATP molecules with the MoFe protein that includes electron transfer, ATP hydrolysis,
Antony, Edwin +13 more
core +1 more source
Nitrogen regulation of protein–protein interactions and transcript levels of GlnK PII regulator and AmtB ammonium transporter homologs in Archaea [PDF]
, 2013 Gene homologs of GlnK PII regulators and AmtB-type ammonium transporters are often paired on prokaryotic genomes, suggesting these proteins share an ancient functional relationship.
Adler +53 more
core +2 more sources
High Pressure Stabilizes the Elusive Hexacoordinated Carbon
ChemistryEurope, EarlyView.The MCF6 species (M = Ca, Sr) is more stable than the bicomponent MF2…CF4 mixture in the solid‐state at high pressure (p > 400 GPa). The main building block is the [CF6]2− unit in which carbon is hexacoordinated. Unusually high coordination number for elements has been of great interest in chemistry.
Shovan Das, Adrish Das, Ayan Datta
wiley +1 more source
Scientific Reports, 2017 Heterocysts are differentiated cells formed by some filamentous, diazotrophic (dinitrogen-fixing) cyanobacteria. The heterocyst is the site of dinitrogen fixation providing the oxygen-sensitive nitrogenase with a low-oxygen environment.
Lucas J. Stal
doaj +1 more source
Current Progress in Nitrogen Fixing Plants and Microbiome Research
Plants, 2020 In agroecosystems, nitrogen is one of the major nutrients limiting plant growth. To meet the increased nitrogen demand in agriculture, synthetic fertilizers have been used extensively in the latter part of the twentieth century, which have led to ...
Kishan Mahmud +3 more
doaj +1 more source
Nitrogen fixation and transcriptome of a new diazotrophic Geomonas from paddy soils
mBio, 2023 Nitrogen gas (N2) fixation driven by diazotrophs is a crucial process for supplying nitrogen to paddy soil ecosystems. The genus Geomonas has been considered to be an important potential diazotroph in paddy soils, but direct experimental evidence of the ...
Guo-Hong Liu +6 more
doaj +1 more source
ChemPhysChem, EarlyView.The pentaPod (P5) concept unites tridentate and tripodal fragments to form molybdenum and tungsten catalytic Chatt‐type complexes for N2‐to‐NH3 reduction. Two pentaPod ligands, P5Me and P5Pln, are available with either two dimethylphosphine or phospholano (Pln) groups. The complexes enable the investigation of reactivity differences in N2 reduction and,
Anna‐Marlene Vogt +3 more
wiley +1 more source