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Chemistry
Results 41 - 60 of 89.
Chemistry - Life Sciences - 06.07.2022
Biosynthesis of strychnine elucidated
Researchers from Jena show how the poison nut tree forms strychnine A research team at the Max Planck Institute for Chemical Ecology in Jena disclosed the complete biosynthetic pathway for the formation of strychnine in the plant species Strychnos nux-vomica (poison nut). The researchers identified all genes involved in the biosynthesis of strychnine and other metabolites and expressed them in the model plant Nicotiana benthamiana .
Chemistry - Materials Science - 04.07.2022
On the way to cell-type materials
Molecular machines control a sizeable number of fundamental processes in nature. Embedded in a cellular environment, these processes play a central role in the intracellular and intercellular transportation of molecules, as well as in muscle contraction in humans and animals. In order for the entire organism to function, a well-defined orientation and arrangement of the molecular machines is essential.
Life Sciences - Chemistry - 29.06.2022
Shining some light on the obscure proteome
Mass-spectrometry based proteomics is the big-data science of proteins that allows to monitor the abundances of thousands of proteins in a sample at once. It is therefore a particularly well suited readout to discover which proteins are targeted by any small molecule. An international research team has investigated this using chemical proteomics.
Astronomy / Space - Chemistry - 28.06.2022
A sanitizer in the galactic centre region
Many of us have probably already - literally - handled the chemical compound iso-propanol: it can used as an antiseptic, a solvent or a cleaning agent. But this substance is not only found on Earth: researchers led by Arnaud Belloche from the Max Planck Institute for Radio Astronomy in Bonn have now detected the molecule in interstellar space for the first time.
Life Sciences - Chemistry - 24.06.2022
Mass spectrometry-based draft of the mouse proteome
Proteins control and organize almost every aspect of life. The totality of all proteins in a living organism, a tissue or a cell is called the proteome. Using mass spectrometry, researchers at the TUM School of Life Sciences characterize the proteome, or protein complement of the genome, in important model organisms.
Life Sciences - Chemistry - 21.06.2022
Using light to activate mRNA: Biochemists use new tool to control mRNA by means of light
DNA (deoxyribonucleic acid) is a long chain of molecules composed of many individual components, and it forms the basis of life on Earth. The function of DNA is to store all genetic information. The translation of this genetic information into proteins - which an organism needs to function, develop and reproduce - takes place via mRNA (messenger ribonucleic acid).
Chemistry - Physics - 21.06.2022
A nose for damaged plants and fake perfumes
Researchers develop a highly sensitive novel technique capable of detecting chiral molecules within complex gas mixtures The chiral signature of a fragrance can reveal whether a perfume is genuine or fake. Similarly, the chiral signature of the emissions of a plant can provide information on whether the plant is healthy or sick.
Chemistry - Environment - 20.06.2022
Damaged plants and fake perfumes can be identified rapidly and reliably in real time
Researchers develop a highly sensitive novel technique capable of detecting chiral molecules within complex gas mixtures The chiral signature of a fragrance can reveal whether a perfume is genuine or fake. Similarly, the chiral signature of the emissions of a plant can provide information on whether the plant is healthy or sick.
Chemistry - 15.06.2022
Diseased plants and wrong perfume can be identified quickly, reliably and in real time
New method reveals chiral molecules in a gas mixture with high sensitivity Whether a perfume is genuine or fake is revealed by the chiral signature of the scent. Similarly, the chiral signature of a plant's odor can tell whether it is healthy or diseased. Researchers at Johannes Gutenberg University Mainz (JGU) and the Max Planck Institute for Chemistry have discovered this using a new technique.
Physics - Chemistry - 15.06.2022
New insights into binding configuration and mobility of molecules on nanoparticle surfaces
Freiburg physicists investigate binding between molecules and nanoparticles with high resolution How molecules bind to a surface is of central importance in chemical reactions, making the possibility of studying binding configurations in isolated nanosystems of great interest. A Freiburg research team led by Dr. Lukas Bruder and Frank Stienkemeier has now succeeded in studying the binding configurations and mobility of organic molecules on ultracold noble gas particles.
Life Sciences - Chemistry - 15.06.2022
Building Block for a Longer Life
Heidelberg plant researchers identify key protein in a mechanism that controls the life of proteins Proteins are existential building blocks of life that also have numerous functions in plants. An average plant cell contains more than 20 billion protein molecules that maintain cellular metabolism and stabilise their structure.
Chemistry - 13.06.2022
Chemists develop new multi-component reaction
More environmentally friendly approach produces complex molecular structures in one step / Ketyl radicals "tamed" by photocatalysis A more sustainable use of chemical resources is part of the United Nations' Agenda 2030. Synthetic chemists are therefore working to design and carry out efficient syntheses.
Chemistry - Life Sciences - 10.06.2022
How the first biomolecules could have been formed
The chemical precursors of present-day biomolecules could have formed not only in the deep sea at hydrothermal vents, but also in warm ponds on the Earth's surface. The chemical reactions that may have occurred in this "primordial soup" have now been reproduced in experiments by an international team led by researchers of Friedrich Schiller University Jena.
Materials Science - Chemistry - 08.06.2022
On the road to the super-battery
A research team led by the Technical University of Munich (TUM) has taken an in-depth look at the internal workings of batteries during charging and discharging. Their findings may help optimize charging processes. When an electric car is being charged, the charge indicator moves quickly at first, be then much more slowly at the end.
Chemistry - 03.06.2022
Identifying ’lazy’ and ’industrious’ Cells in Biocatalysis
Breakthrough in tracking biocatalysis by single cells opens up new possibilities in "green chemistry" The transformation of chemical compounds by living cells - so-called whole-cell biocatalysts - is a process that has been known for some time and has led to a wealth of interesting products. This is evident, for example, in traditional processes such as bread baking or beer brewing, where molecules produced by yeast fungi contribute significantly to flavor.
Environment - Chemistry - 03.06.2022
A novel path for sustainable photon upconversion with non-precious metals
Scientists in Mainz and Berlin use chromium for efficient green-to-blue photon upconversion Sustainable chemical applications need to be able to employ renewable energy sources, renewable raw materials, and earth-abundant elements. However, to date many techniques have only been possible with the use of expensive precious metals or rare earth metals, the extraction of which can have serious environmental impacts.
Health - Chemistry - 30.05.2022
Multi-functional bandage helps wounds to heal
Researchers at the Technical University of Munich (TUM) have developed a film that not only protects wounds similar to the way a bandage does, but also helps wounds to heal faster, repels bacteria, dampens inflammation, releases active pharmaceutical ingredients in a targeted manner and ultimately dissolves by itself.
Life Sciences - Chemistry - 27.05.2022
Biosynthesis of cyanobacterin opens up new class of natural compounds
Researchers in the groups of Prof. Tobias Gulder from TU Dresden and Prof. Tanja Gulder from Leipzig University have succeeded in understanding the biosynthetic mechanisms for the production of the natural product cyanobacterin, which in Nature is produced in small quantities by the cyanobacteria Scytonema hofmanni.
Chemistry - Physics - 26.05.2022
Catalysis Collaborative Research Center enters its second phase
Researchers aim for more targeted control of catalytic reactions and are focusing on mesoporous materials [Picture: SFB 1333] The collaborative research center "Molecular heterogeneous catalysis in confined geometries" (SFB 1333) at the University of Stuttgart is entering its second funding period and has received funding of almost 12 million euros.
Chemistry - Research Management - 25.05.2022
Chemists use light energy to produce small molecular rings
In the search for new active agents in medicine, molecules whose atoms are linked in rings are becoming increasingly important. Such ring systems have particularly suitable properties for producing such active agents and they are driving the development of innovative treatments for malignant tumours, as well as for neurodegenerative and infectious diseases.
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