Florida State University researchers led by physics doctoral student Campion Loong have achieved significant benchmarks in a study of the human cardiac protein alpha-tropomyosin, which is an essential, molecular-level component that controls the heart's contraction on every beat. Using an imaging method called atomic force microscopy, Loong achieved two "firsts": the first direct imaging of individual alpha-tropomyosin molecules, which are very small - roughly 40 nanometers long - and the first demonstrated examples of a measure of the human cardiac protein's flexibility...
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