Trypsin is an enzyme produced in the pancreas that plays a crucial role in digestion. It helps break down proteins into smaller peptides, making them easier for the body to absorb. Trypsin is activated in the small intestine from its inactive form, trypsinogen, which is secreted by the pancreas. This enzyme works best in an alkaline environment, which is provided by the bile and pancreatic juices in the small intestine. Trypsin is essential for proper nutrient absorption and is part of a larger group of enzymes known as proteases, which also include other enzymes that aid in protein digestion.