Issue Date: April 27, 2009
Enzymes' Many Movements
ENZYMES ARE biology's catalysts, making it possible for chemical reactions to happen on biologically relevant timescales, not to mention at nonlethal temperatures and pressures. Random thermal fluctuations mean that enzymes are always in motion and have not one but many possible conformations that differ ever so slightly. But the question of whether these motions play a role in enzyme function has intrigued experimentalists and theorists for many years—especially in the past decade.
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