Research Topic: protein structure

Spatiotemporal fluctuations in fluorescence intensity of rhodamine phalloidin–labeled actin filaments

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Researchers discovered that fluorescent labels attached to actin filaments (cell structures involved in movement and shape) don’t glow uniformly along their length. Instead, they create a mottled pattern of bright and dark regions. This happens because the filament structure varies along its length, affecting how many labels stick to different parts. Interestingly, when the cell’s energy molecule contains a phosphate group, the filament structure becomes more uniform and the pattern disappears.

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Targeting SARS-CoV-2 with Chaga mushroom: An in silico study toward developing a natural antiviral compound

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This study used computer modeling to investigate whether Chaga mushroom components can bind to and potentially block the coronavirus spike protein that SARS-CoV-2 uses to infect cells. The researchers found that three active compounds in Chaga—beta glycan, betulinic acid, and galactomannan—attached strongly to the virus’s binding sites in ways similar to known antiviral molecules. Beyond blocking viral entry, Chaga also has immune-boosting and anti-inflammatory properties that could help prevent the dangerous cytokine storm associated with severe COVID-19.

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Convergent evolution links molybdenum insertase domains with organism-specific sequences

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Scientists studied how fungi use a special protein called Mo insertase to create molybdenum cofactor, which is essential for life. By testing different versions of this protein from various organisms, they discovered that fungi have developed a unique version with a special 20-amino acid region that cannot be replaced with versions from plants or animals. This finding shows that evolution has fine-tuned this protein differently in different organisms.

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Application Potential of Lion’s Mane Mushroom in Soy-Based Meat Analogues by High Moisture Extrusion: Physicochemical, Structural and Flavor Characteristics

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Researchers created a plant-based meat substitute using soy protein and Lion’s Mane mushroom powder processed through extrusion. Adding 20% mushroom powder created the best texture, making it more similar to real meat with visible fibers. The mushroom also improved the flavor, adding mushroom-like aromas and making the product brown better during cooking. This discovery could help make better-tasting plant-based meat alternatives for consumers.

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Effects of ultrasound-assisted extraction and transglutaminase treatment on the physicochemical properties of protein from Stropharia rugosoannulata

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Researchers developed improved methods to extract and modify protein from Stropharia rugosoannulata mushrooms to make them better for use in plant-based meat products. Using ultrasound waves and an enzyme called transglutaminase, they were able to increase the protein yield and improve how well the protein can hold water and oil. These modifications enhanced the mushroom protein’s ability to work as a meat substitute in food products.

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Convergent evolution links molybdenum insertase domains with organism-specific sequences

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Scientists discovered that fungi have uniquely evolved a special way to make molybdenum cofactor, a molecule essential for life. When researchers tried to swap the fungal version with versions from plants or animals, the fungi couldn’t survive properly. A specific 20-amino acid section turned out to be critical for the fungus to use nitrate as food. This finding shows that evolution has created highly specialized solutions for the same biological problem in different organisms.

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The Slit–Robo signalling pathway in nervous system development: a comparative perspective from vertebrates and invertebrates

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This review explains how growing nerve fibers find their way in the developing brain and spinal cord using special signalling molecules called Slit and Robo. These molecules work together like a navigation system, with Slit acting as a ‘stop’ signal secreted from midline structures and Robo receptors on growing axons receiving these signals. The same system is used by flies, worms, and humans, showing that this guidance mechanism is an ancient and essential part of nervous system development.

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