Asparaginase (EC 3.5.1.1, USAN) or Colaspase (BAN) is an enzyme that catalyzes the hydrolysis of asparagine to aspartic acid. Asparaginases are enzymes expressed and produced by microorganisms.http://www.creative-enzymes.com/product/Native-Escherichia-Coli-Asparaginase_822.html