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Asparaginase from Escherichia coli

lyophilized powder, 100-300 units/mg protein (biuret)

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L-Asparagine Amidohydrolase
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:


lyophilized powder

Quality Level

specific activity

100-300 units/mg protein (biuret)


Protein, ≥60%

storage temp.


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This Item
specific activity

100-300 units/mg protein (biuret)

specific activity

75-150 units/mg solid

specific activity

≥500 units/mg protein

specific activity

≥150 units/mg protein (biuret)

storage temp.


storage temp.


storage temp.


storage temp.


Quality Level


Quality Level


Quality Level


Quality Level



Protein, ≥60%




Protein, ≥60% biuret


Protein, 5.0-20.0%

General description

Asparaginase is a bacterial enzyme and also a chemotherapeutic drug.


Asparaginase from Escherichia coli has been used:
  • to compare the cytotoxic effect of L-asparaginase purified from Streptomyces brollosae NEAE-115
  • as a standard in asparaginase assay to quantify asparaginase activities in various eel tissues
  • to elicit amino acid deprivation

Biochem/physiol Actions

Asparaginase (ASNase) products are usually obtained from Escherichia coli and Erwinia chrysanthemi. These enzymes can block the synthesis of protein in tumor cells. It shows high activity in the G1 phase of the cell cycle. It is capable of causing pancreatitis in leukemia patients.
Asparaginase is used in enzymatic assays and to convert asparagine to aspartic acid. Asparaginase is used to reduce the formation of acrylamide in starchy food products. It is also used as a chemotherapy agent for acute lymphoblastic leukemia . Product A3809 is from Escherichia coli and is provided as a lyophilized powder containing sodium chloride.
Asparaginase may cause cell death in leukemic cells by converting the necessary L-asparagine to aspartic acid and ammonia . Asparaginase is allosterically regulated and is crucial for proper cell functioning .

Unit Definition

One unit will liberate 1.0 μmole of ammonia from L-asparagine per min at pH 8.6 at 37 °C.

Physical form

Lyophilized powder containing sodium chloride

Preparation Note

Chromatographically purified

Analysis Note

Protein determined by biuret.


Exclamation markHealth hazard

Signal Word


Hazard Statements

Hazard Classifications

Repr. 2 - Skin Sens. 1

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Metabolic reprogramming plays an essential role on lymphoma progression. Dysregulation of glutamine metabolism is implicated in natural-killer T-cell lymphoma (NKTCL) and tumor cell response to asparaginase-based anti-metabolic treatment. To understand the metabolomic alterations and determine the potential therapeutic target of
Asparagine Synthetase Is Highly Expressed at Baseline in the Pancreas Through Heightened PERK Signaling
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