In enzymology, an amidinoaspartase () is an enzyme that catalyzes the chemical reaction N-amidino-L-aspartate + H2O L-aspartate + urea Thus, the two substrates of this enzyme are N-amidino-L-aspartate and H2O, whereas its two products are L-aspartate and urea. This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amidines. The systematic name of this enzyme class is N-amidino-L-aspartate amidinohydrolase. This enzyme is also called amidinoaspartic amidinohydrolase. References EC 3.5.3 Enzymes of unknown structure