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The Properties of Enzymes
Dorothy Hodgkin was a chemist who did the structure of insulin and vitamin B12. She's a unique figure in British scientific history, I think she's an inspirational figure. What properties do enzymes have that allow them to enable so many reactions so quickly? The fundamental problem about doing a chemical reaction is you have to put the electrons, the glue that hold the atoms together in molecules. You have to arrange them very precisely in three-dimensional space before a reaction can happen.