Which of the following is a plant proteinase or endopeptidase enzyme?

Enzymes are basically or all enzymes contain:

"Enzymes are proteins", it was suggested by

An enzyme can be synthesised by chemically bonding together molecules of

Which one of the following enzymes is not composed of simple proteins?

Name the scientist who for the first time isolated and purified the enzyme urease in crystalline form from Jack bean (Canavalia ensiformis).