Asparaginase

Asparaginase
SMART accession number:SM00870
Description: Asparaginase, which is found in various plant, animal and bacterial cells, catalyses the deamination of asparagine to yield aspartic acid and an ammonium ion, resulting in a depletion of free circulatory asparagine in plasma (PUBMED:3026924). The enzyme is effective in the treatment of human malignant lymphomas, which have a diminished capacity to produce asparagine synthetase: in order to survive, such cells absorb asparagine from blood plasma (PUBMED:2407723), (PUBMED:3379033) - if Asn levels have been depleted by injection of asparaginase, the lymphoma cells die.
Interpro abstract (IPR006034):

L-Asparaginases (EC 3.5.1.1) hydrolyze L-asparagine to L-aspartate and ammonia. Enzymes with asparaginase activity play an important role in the metabolism of all living organisms [(PUBMED:11996000), (PUBMED:17143335)]. Enzymes capable of converting L-asparagine to L-aspartate can be classified as bacterial-type or plant-type L-asparaginase. Bacterial-type L-asparaginase are further divided into subtypes I and II, defined by their intra-/extra-cellular localization, substrate affinity, and oligomeric form. Homologous bacterial-type L-asparaginase are found in all kingdoms of life. Furthermore, bacterial-type L-asparaginase are related to other enzymes, including:

Family alignment:
View or

There are 19043 Asparaginase domains in 19037 proteins in SMART's nrdb database.

Click on the following links for more information.