Biology

Metabolic engineering for the production of free fatty acids (FFAs), fatty acid ethyl esters  (FAEEs), and long-chain hydrocarbons (LCHCs) in Rhodococcus opacus PD630. Researchers have presented a new strategy for efficiently producing fatty acids and biofuels that can transform glucose and oleaginous microorganisms into microbial diesel fuel, with one-step direct fermentative production. Credit: KAIST Researchers
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*Early species similar to the modern crocodile, pictured above, were sensitive to weather changes and could help scientists understand ancient climate changes Credit: Canva Underneath their tough exteriors, some crocodilians have a sensitive side that scientists could use to shine light on our ancient climate, according to new findings published in the Journal of Vertebrate
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Most Prothonotary Warblers spend the winter in a small, ecologically and politically fragile area of Colombia. Credit: Joan Eckhardt Many of North America’s migratory songbirds, which undertake awe-inspiring journeys twice a year, are declining at alarming rates. For conservation efforts to succeed, wildlife managers need to know where they go and what challenges they face
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John Day, Distinguished Professor Emeritus in LSU’s College of the Coast & Environment, has collaborated on a new analysis of societal development with Joel Gunn of the University of North Carolina at Greensboro, William Folan of the Universidad Autonoma de Campeche in Mexico, and Matthew Moerschbaecher of the Louisiana Oil Spill Coordinators Office. Gunn and
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Centrosaurus, the Triceratops relative whose bones contained modern microbes. Credit: Nobu Tamura Bad news, Jurassic Park fans—the odds of scientists cloning a dinosaur from ancient DNA are pretty much zero. That’s because DNA breaks down over time and isn’t stable enough to stay intact for millions of years. And while proteins, the molecules in all
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Polypeptide formation by the oxidative reaction of amino thioacids. (a) Amino thioacids 1 and 2 are coupled via a diaminoacyl disulfide intermediate and subsequent intramolecular amide formation generates an alpha-amide bond. Iron ore or Fe2O3 in acidic solution accelerates this polypeptide formation. The repetitive performance of this reaction yields the polypeptide. (b) The polypeptide is
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(A) Figure describes the enhanced photo-thermal responses of aggregated gold nanoparticles. (B) Aptamer-modified gold nanospheres displaying high selectivity in specific targeting of human prostate cancer cells over normal human prostate epithelial cells (green circles). (C) Figure shows selective photo-thermal imaging of cancer cells. (D) Figure shows the damaged cancer cells after photo-thermal treatment. Credit: Journal
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Credit: Ludwig Maximilian University of Munich DNA may have appeared on Earth earlier than has hitherto been assumed. LMU chemists led by Oliver Trapp show that a simple reaction pathway could have given rise to DNA subunits on the early Earth. How were the building-blocks of life first formed on the early Earth? As yet,
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Use of rhodizonic acid to detect lead trapping by border cells. Credit: Huskey et al. (2019). Plant root systems play a crucial role in ecosystems, radically impacting everything from nutrient cycling to species composition. Despite their importance, scientists are just beginning to develop the tools to understand how these complex systems are structured, how they
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Allosteric sites of the Bacillus subtilis class Ib ribonucleotide reductase. a A 2.50 Å crystal structure of B. subtilis NrdE (α subunit) obtained under activating conditions depicts an S-shaped dimer (“S-dimer”) interfacing at the “specificity” or S-site (lavender). A specificity effector TTP (green) is bound to the S-site, and activating nucleotides, ADP (pink) and ATP (salmon),
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Credit: CC0 Public Domain The mysterious function of a key protein has been revealed following a breakthrough by University of Dundee scientists. HOIL-1 is a component of the Linear Ubiquitin Assembly Complex (LUBAC) which lies at the heart of the mechanism that determines whether the cells of our body will survive or die. Now researchers
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Neolithic burial from Çatalhöyük, Turkey, is represented by a headless young adult female with a fetal skeleton (arrow). Skull removal was a burial custom practiced in number of instances at this locality. Credit: the Çatalhöyük Research Project/Jason Quinlan. Some 9,000 years ago, residents of one of the world’s first large farming communities were also among
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Using a protein produced by a fungus that lives in the Amazon, Brazilian researchers developed a molecule capable of increasing glucose release from biomass for fermentation (sugarcane bagasse at Santa Fé mill in Nova Europa, São Paulo State. Credit: Eduardo Cesar / Pesquisa FAPESP magazine One of the main challenges of second-generation biofuel production is
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Transmission electron microscopy image showing the formation of biomolecular corona around the surface of nanoparticles. Credit: Morteza Mahmoudi, Brigham and Women’s Hospital Investigators from Brigham and Women’s Hospital are taking advantage of a unique phenomenon of nanoparticles to develop a test for early detection of different types of diseases, including cancer. Through previous investigations, Morteza
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