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132 notícias encontradas para "bacteria"
Deliberate slow growth could explain bacteria survival strategies
Escherichia coli (E. coli) are mostly harmless bacteria that live in the intestines of animals and humans. They are the most well-studied bacteria and, often, when scientists discover something about E. coli, they extrapolate that discovery across all bacteria. So when scientists
Light flips bacterial signaling enzyme between two shapes, unlocking how signals travel
Researchers at the University of Bayreuth and Forschungszentrum Jülich have demonstrated that specific light-sensitive enzymes—so-called sensor histidine kinases (SHKs)—transmit their signal through a light-controlled change in asymmetry. With their new study, the researchers con
Purine-heavy DNA sequences protect Bacillus subtilis genes from Rho termination
In the study of bacteria, a longstanding dogma has held that two molecular machines—RNA polymerase, which leads the way in transcribing DNA into RNA, and ribosomes, which bring up the rear translating RNA into proteins—worked so closely in tandem that they were effectively attach
Foto: Nadiye Odabaşı / Pexels
Feline fleas carry bacteria linked to human disease in South Texas, study finds
As human cases of flea-borne murine typhus continue to occur in South Texas, researchers are working to better understand the role cats and their fleas may play in the disease's transmission cycle.
Bacterial protein reveals a hidden rule for controlling calcium
A small change in acidity can transform the world around us. A squeeze of lemon changes the taste of food. Vinegar preserves vegetables. Stomach acid helps break down a meal. These familiar effects come from protons—tiny charged particles that can reshape chemical interactions.
How proteins are inserted into cell membranes
Researchers from Heinrich Heine University Düsseldorf (HHU) have—in collaboration with colleagues from Ludwig Maximilian University (LMU) in Munich—analyzed the complex biochemical processes that bacteria use to insert proteins into their cell membranes. They explain that—contrar
Newly identified marine bacterial enzyme opens new route to building bioactive compound li
Many important medicines and agricultural compounds have origins in natural products made by microorganisms. One such compound is prodigiosin, a vivid red pigment produced by certain bacteria. Beyond its color, prodigiosin and related compounds known as prodiginines have attracte
Isotope probing shows soil is packed with dormant viruses lying in wait
A single gram of soil contains between 10 million and 1 billion viruses. Most of those viruses do not infect plants, animals or people, but they do target bacteria and other microbes. Because of their influence on microbial communities, viruses can affect nutrient cycling and soi
Scientists finally crack nature's secret for building better cancer drugs
Scientists finally crack nature's secret for building better cancer drugs
Researchers have cracked the code behind bacteria's ability to naturally manufacture multiple versions of powerful anti-cancer drugs. The discovery could make it much easier to engineer new cancer treatments inspired by nature, including improved versions of existing medicines.
South African fynbos soil delivers a new species of soil bacterium
South African fynbos soil delivers a new species of soil bacterium
Microbiologists from Stellenbosch University in South Africa have discovered a previously unknown bacterial genus within the phylum Acidobacteriota. It is the first genus from this phylum to be described from Southern Africa.
Self-propelled microparticles scrub stubborn biofilms, improving wound care and instrument
Self-propelled microparticles scrub stubborn biofilms, improving wound care and instrument
Newly developed microparticles can infiltrate stubborn bacterial matrices and release tiny oxygen bubbles to clean surfaces and wounds more efficiently than hydrogen peroxide or other cleaning agents alone, researchers at the University of Illinois Urbana-Champaign report. In two
Foto: Google DeepMind / Pexels
Bacteria turn dissolved uranium into stable compound in 130 days, study finds
Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), together with Wismut GmbH and scientists from the University of Granada in Spain, have demonstrated for the first time that bacteria can convert uranium dissolved in water into a stable chemical compound when they ha