Is enterokinase a component of pancreatic juice?

Yes, enterokinase is a component of pancreatic juice.

Enterokinase, also known as enteropeptidase, is a digestive enzyme that is produced by the pancreas and secreted into the small intestine. It is responsible for activating trypsinogen, which is a proenzyme of the digestive enzyme trypsin. Once activated, trypsin can then activate other digestive enzymes, such as chymotrypsin, elastase, and carboxypeptidases, which help to break down proteins into smaller peptides and amino acids. Enterokinase is therefore an essential component of the digestive process.