The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/When-artificial-enzymes-accelerate-green-chemistry.aspx DRF english version en-US https://www.cea.fr/_layouts/15/images/i2i/icon-144x144-1033.png The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english Evaluating the stress response of a bacterium using optical tweezers on a chip https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/evaluating-the-stress-response-of-a-bacterium-using-optical-tweezers-on-a-chip.aspx Physicists at the CEA-Irig and their partners in Grenoble (CEA-Leti, CNRS, UGA) have shown that it is possible to trap individual bacteria and measure their response to stress using silicon photonic crystals. This disruptive technique, which does not require cell culture, opens the way to rapid antibiotic resistance tests. Photonics ; Micro-nanotechnologies ; Bacteria ; Antibiotics ; Diagnosis and innovative treatment general public ; Journalists ; Researchers IRIG Découvertes et avancées ; Scientific result Wed, 19 Oct 2022 10:00:00 GMT Photocatalysis: imogolites facilitate charge separation https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/photocatalysis-imogolites-facilitate-charge-separation.aspx A team from the Iramis (CEA-CNRS) has shown that aluminosilicate nanotubes (imogolites) have an interesting potential for photocatalysis. These light-activated semiconductors could be functionalized to depollute water, in an environmentally friendly way. Remediation ; Green Chemistry ; Micro-nanotechnologies ; New industrial production processes general public ; Journalists ; Researchers Iramis Découvertes et avancées ; Scientific result Thu, 06 May 2021 10:00:00 GMT Green chemistry and biofuel: the mechanism of a key photoenzyme decrypted https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/Green-chemistry-and-biofuel-the-mechanism-of-a-key-photoenzyme-decrypted-.aspx Green Chemistry ; Chemistry ; 3rd generation biofuel ; Microalgae ; Synchrotron ; Laser ; Molecular mechanisms ; Bioenergy Press release Fri, 09 Apr 2021 10:00:00 GMT How an imbalance in gut microbiota can lead to depression https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/how-an-imbalance-in-gut-microbiota-can-lead-to-depression.aspx A study involving the CEA-Joliot has revealed the mechanism by which certain depressive states are linked to an imbalance in gut microbiota. The endocannabinoid system makes the connecting link. Diseases ; Brain ; Bacteria general public ; Journalists ; Researchers Joliot Découvertes et avancées ; Scientific result Thu, 18 Feb 2021 11:00:00 GMT Accelerating green chemistry using artificial enzymes https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/accelerating-green-chemistry-using-artificial-enzymes.aspx Researchers at the CEA-Irig have introduced a new catalysis tool for green chemistry, by creating crystalline artificial enzymes whose solid form increases stability and allows more reaction cycles under harsher conditions. Green Chemistry ; Bacteria general public ; Journalists ; Researchers IRIG Découvertes et avancées ; Scientific result Tue, 09 Feb 2021 11:00:00 GMT When artificial enzymes accelerate green chemistry https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/When-artificial-enzymes-accelerate-green-chemistry.aspx Researchers at CEA- Irig have offered a new catalysis tool to green chemistry by creating artificial crystalline enzymes whose solid form increases stability and allows more cycles of reactions under harder conditions of use. Green Chemistry ; Bacteria Companies ; general public ; Institutions ; Journalists ; Researchers IRIG News ; Scientific result Tue, 09 Feb 2021 11:00:00 GMT Amazing discovery: Variovorax, a bacterium that lives in the heart of a working nuclear reactor! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/Variovorax-bacteria-living-heart-working-nuclear-reactor.aspx Researchers from I2BC and SPI (DMTS, Marcoule), in collaboration with CEA Grenoble and the Belgian nuclear research center, discovered, by using two meta-omic approaches, living bacteria in the core pool of the CEA Paris-Saclay research reactor, Osiris, in operation, thus opening up perspectives for the discovery of new radioresistant species. Bacteria ; Nuclear Toxicology Scientific result Thu, 17 Dec 2020 11:00:00 GMT What if our intestinal microbiota reveals a new antibiotic? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/What-if-our-intestinal-microbiota-reveals-a-new-antibiotic.aspx A bacterium present in our intestinal macrobiota produces a particularly interesting antibiotic: Ruminococcin C1. Explanations from CEA-Irig. Structural biology ; Antibiotics ; Bacteria Companies ; general public ; Researchers ; Institutions IRIG Scientific result Fri, 21 Aug 2020 10:00:00 GMT Structural biology: at the heart of the core of bacterial metalloproteins https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/Structural-biology-at-the-heart-of-the-core-of-bacterial-metalloproteins.aspx To be or not to be expressed? Researchers at the CEA-Irig (IBS) are showing with precision how a bacterial metalloprotein controls the expression of certain genes. And all it takes is an electron and a proton! Structural biology ; Bacteria Companies ; general public ; Journalists ; Researchers IRIG Scientific result Wed, 13 May 2020 10:00:00 GMT Reducing mosquito populations https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/Reducing-mosquito-populations.aspx Researchers at the CEA-Irig have elucidated the activation cascade of one of the four Bacillus thuringiensis toxins that specifically target mosquito larvae, in order to prevent them from becoming vectors of devastating diseases. Bacteria ; Environment ; Health & life sciences Companies ; general public ; Institutions ; Journalists ; Researchers IRIG Scientific result Tue, 07 Apr 2020 10:00:00 GMT On track to eradicating stomach infections in half the world's population https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/On-track-to-eradicating-stomach-infections-in-half-the-world-s-population.aspx A Franco-Indian collaboration has identified an important mechanism involved in the transmission of antibiotic resistance, which is the principal cause of the failure of therapies aiming to eradicate Helicobacter pylori, a bacterium that infects half the world’s population. Health & life sciences ; Diseases ; Bacteria ; Infectious diseases Companies ; general public ; Institutions ; Journalists ; Researchers Scientific result Wed, 27 Nov 2019 11:00:00 GMT Submarine symbiosis: microorganisms that never get lost https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/Submarine-symbiosis-microorganisms-that-never-get-lost--.aspx A team of CEA-Biam has uncovered a symbiotic behavior between magnetism-using bacteria and eukaryotic microorganisms. Biodiversity ; Bacteria ; Genomics Researchers ; Journalists ; general public BIAM En direct ; Scientific result Tue, 14 May 2019 10:00:00 GMT Bacteria: more than one weapon at their disposal https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/Bacteria-more-than-one-weapon-at-their-disposal.aspx IBS researchers and their partners have discovered a new weapon in the Pseudomonas aeruginosa arsenal. Bacteria ; Antibiotics Researchers ; Journalists ; general public BIG Scientific result Mon, 26 Mar 2018 10:00:00 GMT New developments in antibiotic strategy https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/new-developments-in-antibiotic-strategy.aspx Scientists from the IBS have characterized a potential target for new antibiotics. Structural biology ; Bacteria Researchers ; general public ; Journalists IBS Scientific result Fri, 22 Dec 2017 11:00:00 GMT New Step Towards a Better Evaluation of Human Gut Microbiota https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/new-step-towards-a-better-evaluation-of-human-gut-microbiota.aspx The standardization of metagenomic methods is a prerequisite to better understand the human gut microbiota. The step of DNA extraction in this method is critical. Metagenomics ; Bacteria Researchers ; general public ; Journalists GENOSCOPE Scientific result Mon, 09 Oct 2017 10:00:00 GMT Ultrasmart Materials Processed by Soft Chemistry https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/ultrasmart-materials-processed-by-soft-chemistry.aspx Chemists from ICSM have synthesized new hybrid nanostructured materials (mineral and organic), by a molecular self-assembly process in water, at room temperature. This family of materials containing polyoxometalates (POMs) can perform various functions: ion or proton conductor, electrode, photosensitive crystal, catalyst... and more. Green Chemistry Researchers ; general public ; Journalists DRF Scientific result matériau nano-structuré;matériaux;nanotechnologies;chimie douce;synthèse; Wed, 10 May 2017 10:00:00 GMT New Project Aimed at Reducing Antibiotic Resistance https://www.cea.fr/drf/english/Pages/News/Institutional-news/2017/new-project-aimed-at-reducing-antibiotic-resistance.aspx The CEA Frédéric-Joliot Institute is involved in project CARBAMAT to fight against antibiotic resistance. SATT Paris-Saclay, a company promoting technology transfer, supports this project. Health & life sciences ; Bacteria general public ; Journalists ; Researchers Joliot Highlight Fri, 28 Apr 2017 10:00:00 GMT Working Towards Less Virulent Bacteria https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/working-towards-less-virulent-bacteria.aspx Researchers at CEA-BIG and IBS have developed inhibitors of a protein involved in the virulence of Gram-negative bacteria and have deciphered their mode of operation. Health & life sciences ; Bacteria general public ; Journalists ; Researchers IBS Scientific result Fri, 28 Apr 2017 10:00:00 GMT Finding Ways to Disarm Bacteria https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/finding-ways-to-disarm-bacteria.aspx Scientists from IBS and their partners have understood one of the molecular mechanisms that bacteria use for survival when facing our immune defenses. Health & life sciences ; Bacteria general public ; Journalists ; Researchers IBS Scientific result Mon, 24 Apr 2017 10:00:00 GMT Accelerating the evaluation of drug candidates https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/Accelerating-evaluation-drug-candidates.aspx A team from the CEA-IBITECS has participated in the development of a new isotope labeling process to accelerate in vivo studies of drug candidates. The original and unprecedented mechanism of this process was elucidated by computer modeling. Green Chemistry ; Biomarkers IBITECS Scientific result Mon, 17 Aug 2015 10:00:00 GMT A molecular model of the bacterial cell wall https://www.cea.fr/drf/english/Pages/News/Scientific-results/2014/A-molecular-model-of-the-bacterial-cell-wall.aspx A team from the IBS has used solid-state NMR spectroscopy to obtain the structure of a key enzyme in the formation of the bacterial cell wall, revealing how it interacts with its substrate. Structural biology ; Bacteria Grenoble Scientific result Wed, 24 Dec 2014 11:00:00 GMT Creating an enzyme from scratch https://www.cea.fr/drf/english/Pages/News/Scientific-results/2013/Creating-an-enzyme-from-scratch.aspx A novelty for green chemistry. Researchers from the CEA-IRTSV and the IBS have developed a method of building stable and original metalloenzymes. Ultimately, this work will allow the pharmaceutical industry to propose an alternative to chemical catalysis and biocatalysis, by using more efficient and environmentally friendly processes. Green Chemistry IBS Scientific result Tue, 10 Sep 2013 10:00:00 GMT