By Gary Boas, News Editor[email protected]Förster resonance energy transfer, or FRET, has contributed to advances in a host of applications. Measuring the energy transfer between donor and acceptor dyes attached to two ends of a molecule, or to two different molecules brought close together, enables researchers to probe a range of biological processes, including protein-protein and protein-DNA interactions, ligand-receptor binding, and protein conformational changes in response to a biological stimulus. It also allows them to explore spatial relationships in biological structures and macromolecules by monitoring the distance between...Read full articleRelated content from Photonics MediaArticlesProgrammable Sensor Provides Fast, High-Quality Imaging of Neural ChangesTo study brain functions like memory, neuroscientists track the electrical communications of neurons. These voltage changes can be subtle and happen on a millisecond timescale. 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