Articles tagged with Hydrogenases
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A team of researchers from Kyushu University has developed a novel iridium-based compound that can efficiently store electrons from hydrogen in a solid state. The stored electrons can be extracted and used to catalyze useful chemical reactions, such as cyclopropanation, with significant advantages over conventional techniques.
Researchers at Ruhr-University Bochum developed a method to increase oxygen stability of [FeFe] hydrogenase enzyme using site-directed mutagenesis, electrochemistry, X-ray crystallography and molecular dynamics simulations. Blockages in dynamic water channels near the H-cluster were found to improve oxygen resistance.
Scientists designed a synthetic molecule that mimics the hydrogen gas-producing chemical reaction performed by nickel-iron hydrogenase enzyme. The new compound efficiently produces hydrogen using earth-abundant metals, potentially replacing platinum metal in industrial electrolysis.
Researchers have developed a practical method to generate green hydrogen using natural enzymes, which contain only earth-abundant elements. The new approach enables the efficient production of green hydrogen from sunlight, making it a promising solution for decarbonizing transportation and industries.
The new homogeneous catalyst enables the direct synthesis of hydrogen peroxide with improved efficiency and safety. The process requires only one step and no separation of gases from the reaction flask.
Researchers discovered a new enzyme with molecular protection against oxygen, increasing its resistance by genetic modification. This breakthrough aims to improve protein dynamics and control inorganic centre reactivity for carbon-neutral hydrogen production.
A research team has developed a platinum-free biocatalyst that efficiently produces hydrogen using electricity and generates electricity from hydrogen. The enzyme system is embedded in a polymer film, making it viable for industrial use, with potential applications in fuel cells and water electrolysis.
Researchers have made breakthrough in recreating nature's efficient machinery for generating hydrogen gas using biological enzymes. The study focuses on iron-iron hydrogenase enzyme, which is faster and more efficient than current industrial process.
Researchers at Ruhr-University Bochum identified why certain enzymes like hydrogenases are unstable in oxygen. By analyzing structural changes on an atomic level, they hope to protect these proteins against oxygen in future biotech applications.
Researchers at Nara Institute of Science and Technology discovered the proton transfer pathway in nickel-iron hydrogenase, crucial for microorganism energy production. The study provides insights into designing biofuel technologies using nature's model.
Researchers from Ruhr-Universität Bochum and University of Oxford reveal the mechanism behind activating hydrogenases, complex enzymes that produce hydrogen efficiently. The discovery sheds light on the process of introducing a chemical cofactor into the enzyme's active center.
Researchers at EPFL have successfully synthesized a manganese-hydrogenase by incorporating a manganese complex into an iron-hydrogenase. The resulting semi-synthetic enzyme is active for the native reaction of iron-hydrogenase, marking a significant breakthrough in metalloenzyme design.
Researchers from Ruhr-University Bochum developed a system combining gas diffusion electrode technology with the enzyme hydrogenase to achieve significantly higher current densities. The resulting biofuel cell achieved a power density of up to 3.6 milliwatts per square centimeter and an open circuit voltage of 1.13 volts.
Researchers at Ruhr-University Bochum have identified the proton transfer pathway in [FeFe]-hydrogenases, a crucial step for efficient hydrogen production. The study reveals that amino acids with no function can shut down hydrogenase activity, and provides valuable insights into the molecular mechanism of proton transfer.
A team of researchers has developed a new mechanism to protect enzymes from oxygen as biocatalysts in fuel cells. The protective mechanism is based on oxygen-consuming enzymes that draw their energy from sugar, allowing for the production of a functional biofuel cell with high efficiency.
Researchers at Ruhr-University Bochum have developed semi-synthetic enzyme systems using DNA, which can replace protein cofactors. This innovation aims to create more stable biocatalysts that can be used in industry for climate protection and economic gain.
Researchers analyzed protein shell and active center interaction in green algae enzymes, improving understanding of biocatalyst efficiency and informing chemical catalyst development. Hydrogen bonds between H-cluster and protein environment significantly influence electrochemical properties and catalytic direction.
A newly developed technique has allowed researchers to study the reactions of hydrogenases, enzymes that catalyze hydrogen production from algae and bacteria. The study reveals that the iron atoms in these enzymes briefly form a hydride before releasing molecular hydrogen.
Researchers at Arizona State University have developed a new method for producing industrial-scale algal hydrogen, which could potentially replace fossil fuels. The innovative approach uses a linked Photosystem I-hydrogenase system to improve the efficiency of hydrogen production.
Scientists have identified a phylogenetically old alga's hydrogen-producing enzyme, which shares characteristics with its bacterial counterpart. The study reveals that these enzymes are used for light-driven generation of hydrogen in green algae.
Researchers discovered that green algae use a unique protein machinery in their chloroplasts to assemble functional hydrogenases. This breakthrough enables biotechnological methods for efficient hydrogen production in green algae.
Researchers describe chemical reactions responsible for hydrogen generation stability in aerobic environment by algal enzymes. They propose a new catalytic model that reveals two pathways for oxygen molecule penetration into the protein structure.
Researchers have combined theory and experiment to characterize each chemical reaction step that results in the reduction of oxygen by the enzyme. This study paves the way for efficiently exploiting enzymes from living systems for clean energy production.
Engineers successfully created a hydrogen-producing enzyme that works as efficiently as the natural version, without needing platinum. The artificial variant replaces sulphur with selenium and retains its biochemical properties.
A team of researchers has developed a hydrogel that can protect sensitive catalysts from oxygen-caused damage, making it possible to create efficient and affordable hydrogen fuel cells. The hydrogel acts as both solvent and protective environment, allowing the catalysts to remain functional even in high-oxygen concentrations.
Researchers develop a novel fuel cell design that protects sensitive catalysts using a redox hydrogel. This shield prevents deactivation caused by oxygen and extreme electrical potentials, allowing for efficient and long-term energy conversion. The breakthrough has major implications for the development of sustainable energy solutions.
Soil bacteria, such as Mycobacterium smegmatis, use enzymes to efficiently scavenge hydrogen from the atmosphere, ramping up activity when carbon-based energy sources are scarce. This discovery has implications for understanding global climate processes and developing new catalysts for hydrogen fuel cells.
Researchers at Ruhr-Universität Bochum have developed a method to generate bio-based hydrogen through spontaneous protein activation, enabling the industrial application of hydrogenases. The new process uses chemically synthesized inactive iron complexes and biological precursors to produce fully activated enzymes.
Researchers at Ruhr-University Bochum found that oxygen inactivates enzyme function in three phases, leading to the destruction of biological catalysts. This discovery could help develop more robust enzymes for hydrogen production.
Scientists have developed a synthetic catalyst that mimics the active site of naturally occurring enzymes, which process hydrogen like platinum. The researchers created a model of the nickel-iron complex, including a bridging hydride ligand, to better understand the mechanism of hydrogenases.
Researchers at Arizona State University aim to create an environmentally friendly energy source by harnessing the power of sunlight and bacteria to produce hydrogen. The project uses microbial photosynthesis to generate hydrogen, which can be converted into a clean fuel without releasing CO2 into the atmosphere.
A pioneering biofuel cell has been developed that can generate electricity from low levels of hydrogen in air, offering an inexpensive and renewable alternative to platinum-based fuel cells. The cell uses enzymes from naturally occurring bacteria and can power electronic devices with minimal power requirements.
Scientists at the University of Illinois used computer simulation to study how oxygen and hydrogen travel to an enzyme's catalyst site. They discovered that closing oxygen pathways could increase hydrogenase tolerance to oxygen, making it a more economical source of hydrogen fuel.