What is "glutamin-ase"

In enzymology, a glutamin-(asparagin-)ase is an enzyme that catalyzes the chemical reaction

L-glutamine + HO $\rightleftharpoons$ L-glutamate + NH

Thus, the two substrates of this enzyme are L-glutamine and HO, whereas its two products are L-glutamate and NH.

This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. The systematic name of this enzyme class is L-glutamine(L-asparagine) amidohydrolase. This enzyme participates in 4 metabolic pathways: glutamate metabolism, alanine and aspartate metabolism, d-glutamine and d-glutamate metabolism, and nitrogen metabolism.