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October 4th marks the birthday of renowned Swiss chemist Kurt Wüthrich, who was born in 1938. Wüthrich shared the Nobel Prize in Chemistry in 2002 for developing nuclear magnetic resonance (NMR) spectroscopy to determine the three-dimensional structure of biological macromolecules in solution, specifically proteins. His groundbreaking contributions have revolutionized the field of structural biology and deepened our understanding of complex biomolecular systems at the atomic level.