Letting Go: How dying cells detach from their neighbours

Researchers have described how dying cells detach and are expelled from a tissue, and how tissue tension in the region surrounding a dying cell is remodelled. …

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Scientific team describes a new molecular mechanism to fight bacterial infections

A new antibacterial mechanism has been identified that protects macrophages – defense cells in the immune system – from the infection of the bacteria Salmonella enterica serovar Typhimurium, a pathogen associated with several gastrointestinal diseases. This discovery, carried out with mice, could open new exploration channels for pharmacological treatments of some bacterial infections.  …

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Bird lovers help scientists discover secrets of beak evolution

Data shows new information about the evolution of bird beaks, report scientists. In their study, 3D scans were logged online by members of the public across the world. …

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Neutrons identify critical details in bacterial enzyme implicated in gastric cancer

Neutron analysis is helping researchers better understand a key enzyme found in a bacterium known to cause stomach cancer. Understanding the details of this enzyme, and thus the Helicobacter pylori bacteria’s metabolism and biological pathways, could be central to developing drugs that act against H. pylori, but that do not attack the stomach’s useful bacteria.

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Good ribbance: Dinosaur rib bones reveal remnants of 195-million-year-old protein

Is fossilized rock all that remains when a dinosaur decomposes? New research provides the first evidence that proteins have been preserved within the 195-million-year-old rib of the sauropodomorph dinosaur Lufengosaurus. …

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African lake provides new clues about ancient marine life

New research shows there may have been more nitrogen in the ocean between one and two billion years ago than previously thought, allowing marine organisms to proliferate at a time when multi-cellularity and eukaryotic life first emerged.

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Mechanism for photosynthesis already existed in primeval microbe

A Japanese research team has discovered an evolutionary model for the biological function that creates carbon dioxide from glucose in photosynthesis. They found the mechanism in a primitive, non-photosynthesizing microbe. …

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Cell biology: New molecular details about protein sorting in the cell

The targeted incorporation of proteins into the membrane is a vital process for cell maintenance; these membrane proteins ensure the proper functioning of the cell’s metabolism, communication with its environment, and energy supply. Protein-sorting mechanisms ensure that membrane proteins are specifically recognized among thousands of different proteins — and are sent to the membrane, where they’re needed. …

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