Caffeine Molecules in Digestive Enzyme

Caffeine Molecules in Digestive Enzyme

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Credit: KENNETH EWARD/SCIENCE PHOTO LIBRARY

Caption: Three caffeine molecules bound to the active site of a chitinase digestive enzyme. Although better known as the active ingredient in a morning cup of coffee, caffeine's original and principal use is by plants to deter herbivores. It does so through a moderate inhibition of several key enzymes. The image is a digital computer model based on real molecules. Magnification: 60 million times at 5''x7'' printed size.

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Keywords: active site, caffeine, caffeine molecules, chitinase, chitinase digestive enzyme, computer model, digestive enzymes, digital model, enzyme, inhibition, inhibitor, molecule models

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