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Definition

Enzymes are complex proteins that cause a specific chemical change in all parts of the body. For example, they can help break down the foods we eat so the body can use them. Blood clotting is another example of enzymes at work.

Enzymes are needed for all body functions. They are found in every organ and cell in the body, including in the:

  • Blood
  • Intestinal fluids
  • Mouth (saliva)
  • Stomach (gastric juice)

References

Hall JE, Hall ME. Genetic control of protein synthesis, cell function, and cell reproduction. In: Hall JE, Hall ME, eds. Guyton and Hall Textbook of Medical Physiology. 14th ed. Philadelphia, PA: Elsevier; 2021:chap 3.

Taber's Medical Dictionary Online website. www.tabers.com/tabersonline. Accessed April 15, 2021.

Last reviewed January 16, 2021 by Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team..

Related specialties

Clinical Trials: Enzyme

UF Health research scientists make medicine better every day. They discover new ways to help people by running clinical trials. When you join a clinical trial, you can get advanced medical care. Sometimes years before it's available everywhere. You can also help make medicine better for everyone else. If you'd like to learn more about clinical trials, visit our clinical trials page. Or click one of the links below:

News and Patient Stories: Enzyme

New study shows a role for cholesterol in pain perception

February 27, 2024

When you stub your toe or bump your head, you know that rubbing the injury can lessen the ouch. But how? New research from the lab of Scott B. Hansen, Ph.D.,…

The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida

Scott B. Hansen, Ph.D.,
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