Biology

The cathepsins in the study were cysteine cathepsins and are best known for their work in the lysosome, a cell organelle, where they break down unneeded proteins into amino acids. Credit: National Institutes of Health Like motley bandits, certain enzymes implicated in cancer and other diseases also annihilate each other. A new study reveals details
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Figure 1. Overall structure of CysLT2R (blue) as compared to CysLT1R (yellow). Credit: Anastasiia Gusach et al./Nature Communications Biophysicists from the MIPT Center for Molecular Mechanisms of Aging and Age-Related Diseases have teamed up with colleagues from Canada, the U.S., Japan, France, and Germany to shed light on the structure and functioning mechanism of the
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The tiny fragments of fungal cells could contribute to asthma, allergic reactions and ice cloud formation. Credit: Michael Lawler / UCI In a discovery that has implications for our understanding of the air we breathe, UCI chemists report that they’ve found nanoscale fragments of fungal cells in the atmosphere. The pieces are extremely small, measuring
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Credit: CENIEH A study led by the University of Bordeaux and the Dental Anthropology Group of the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), which has been published this week in the American Journal of Physical Anthropology, reveals that the species Homo antecessor, found in level TD6 of the Gran Dolina site in
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Scientists don’t yet understand the effects of aging on the cellular processes involved in skin healing. Justin Crane, an assistant professor of biology at Northeastern, and Wesley Wong, a fourth-year doctoral student in Crane’s lab, are studying these processes in aging mice to boost new anti-aging therapies for people. Credit: Matthew Modoono/Northeastern University If I
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The platypus is one of the world’s strangest animals Prolonged drought and other effects of climate change are pushing Australia’s unique platypus population towards extinction, scientists warned in a study published Monday. The river-dwelling animal has already disappeared from up to 40 percent of its historical range on Australia’s east coast due to the drought,
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Gray wolves, like this pair on Isle Royale, are listed as endangered in the United States. Credit: Michigan Technological University What makes for an endangered species classification isn’t always obvious. Lions and leopards are endangered species. Robins and raccoons clearly are not. The distinction seems simple until one ponders a question such as: How many
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Credit: Unsplash In the north eastern Free State, a 60 km green corridor is being created that will link the upper Wilge Protected Environment to the Sneeuwberg. The plan is to create a place of refuge for the bird species that are threatened by climate change and the destruction of South Africa’s grasslands. It will
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By measuring characteristics like ear, foot, and tail size in species like Euryoryzomys russatus, researchers can quantify functional diversity in large rainforests. Credit: Ricardo S. Bovendorp “Save the rainforests” is a snappy slogan, but it doesn’t tell the full story of how complicated it is to do just that. Before conservationists can even begin restoring
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Bacteria cells (red) on a programmable composite of silica nanoparticles (yellow) and carbon nanotubes (blue). Credit: Niemeyer-Lab, KIT Using DNA, small silica particles, and carbon nanotubes, researchers of Karlsruhe Institute of Technology (KIT) have developed novel programmable nanocomposites that can be tailored to various applications and programmed to degrade quickly and gently. For medical applications,
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Credit: CC0 Public Domain Researchers have analysed these animals for 14 months, concluding that the frequency of their yawns increases immediately after a social conflict among members of the group. The most common images of sea lions show these animals opening their jaws to produce broad yawns. However, a recent study has shown that these
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Authorities halted oyster sales at 23 French fields after testing revealed norovirus contamination. Several oyster farmers along France’s Atlantic and Mediterranean coasts have been forced to halt sales since December after their sites were contaminated by the highly contagious norovirus, which they blame on overflowing sewage treatment plants. Authorities ordered the suspensions at 23 of
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Few things related to science capture the imagination more than the magic of worlds past. This includes the origins of life, dinosaurs, mass extinctions, meteorite impacts, and the evolution of our species. Understanding the evolution of life is central to the way we view ourselves and others and developing this field is thus critical. Furthermore,
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