Recombinant Trypsin inhibitor DE-3 protein (His tag)

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Trypsin inhibitor DE-3 also known as TI DE-3 is a protein that blocks the activity of trypsin a serine protease. This inhibition prevents the degradation of proteins by neutralizing trypsin's enzymatic activity. TI DE-3 has a molecular mass of about 20 kDa. It is primarily expressed in the pancreas where it plays a part in regulating digestive activities.

Biological function summary

TI DE-3 prevents the premature activation of trypsin within the pancreas acting as a safeguard against self-digestion. It does this by forming a complex with trypsin which stops the enzyme from breaking down proteins in an uncontrolled manner. This function is important for maintaining cellular integrity and preventing tissue damage.

Pathways

TI DE-3 is deeply involved in digestive enzyme regulation and the proteolytic cascade. It interacts directly with trypsin within the digestive enzyme activation pathway ensuring proper protein digestion. Other proteins like chymotrypsin can also be influenced indirectly by TI DE-3 because they are activated by trypsin. Keeping trypsin in check helps to balance the activities of other proteolytic enzymes.

TI DE-3 is important for conditions such as pancreatitis and pancreatic cancer. In pancreatitis inadequate inhibition of trypsin can cause it to digest pancreatic tissues leading to inflammation. Variations in TI DE-3 expression or function may also contribute to tumor growth in pancreatic cancer where disrupted protease activity can influence tumor progression. Trypsin's activity in these conditions shows the importance of TI DE-3 in disease processes.