What is "aspartyltransferase"

In enzymology, an aspartyltransferase is an enzyme that catalyzes the chemical reaction

L-asparagine + hydroxylamine $\rightleftharpoons$ NH + L-aspartylhydroxamate

Thus, the two substrates of this enzyme are L-asparagine and hydroxylamine, whereas its two products are NH and L-aspartylhydroxamate.

This enzyme belongs to the family of transferases, specifically the aminoacyltransferases. The systematic name of this enzyme class is L-asparagine:hydroxylamine gamma-aspartyltransferase. Other names in common use include beta-aspartyl transferase, and aspartotransferase.