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Showing posts with the label Enzymes

Fluorescent Silk Tags to Help Differentiate Fake Medicines

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Silkworms can produce edible, fluorescent silk cocoons (left side of left image); the proteins from the cocoons can be used in codes (right) to verify the authenticity of medications. Credit: Adapted from ACS Central Science 2022, DOI: 10.1021/acscentsci.1c01233 Recent changes, such as the development of online pharmacies and supply chain issues, have made it simpler for counterfeiters to profit from fake or adulterated drugs. Researchers have now constructed edible tags made of fluorescent silk proteins that may be put directly on tablets or in a liquid therapy, according to a study published in ACS Central Science . A smartphone app can scan the codes on the tags to verify the source and purity of the medications. Of late, the number of online pharmacies has exploded, offering a wide range of pharmaceuticals straight to clients' homes. Some of these companies are legitimate, while others operate unlawfully, offering poor, wrongly labeled, or tainted with undesired ingredients co

Are You an Expert in PCR? Taq Does Not Work the Way You Know

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Credits: Genome.gov The University of California, Irvine's Departments of Chemistry and Physics and Astronomy have discovered new information on a critical enzyme that enables DNA sequencing . The discovery marks a significant step forward in the future of customized medicine, when physicians will be able to construct medicines based specifically on patients' DNA.  “Enzymes make life possible by catalyzing chemical transformations that otherwise would just take too long for an organism,” said Greg Weiss , UCI professor of chemistry and a co-corresponding author of the new study. “One of the transformations we’re really interested in is essential for all life on the planet – it’s the process by which DNA is copied and repaired.”  The enzyme researched by the UCI-led team is named Taq, after the bacterium in which it was initially found, Thermos aquaticus. The UCI-led research discovered that Taq, which aids in the replication of DNA, functions in a fundamentally different way th

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