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Diamine Oxidase from porcine kidney

≥0.05 unit/mg solid

Amine:oxygen oxidoreductase (deaminating) (pyridoxal-containing)
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:

Quality Level

biological source

Porcine kidney



specific activity

≥0.05 unit/mg solid

mol wt

170 kDa


100 mM sodium phosphate buffer, pH 7.2: soluble 10 mg/mL

foreign activity

monoamine oxidase (benzylamine substrate) ≤1%

storage temp.


General description

Diamine oxidase from porcine kidney is a homodimer consisting of two equal subunits with a molecular weight of 87 kDa each. Each subunit contains one molecule of pyridoxal phosphate and one atom of copper. The molecular mass of the enzyme is found to be 170 kDa. The enzyme is a glycoprotein containing 5% hexose, 3.3% glucosamine, 2.6% N-acetylglucosamine, and 0.25% N-acetylneuraminic acid. The enzyme exhibits a high affinity for concanavalin A. Optimum pH with cadverine and histamine as substrates is found to be 6.3-7.4.


Diamine Oxidase from porcine kidney has been used in the construction of histamine biosensor.
Diamine oxidase from porcine kidney has been used in a study to investigate a luminescence-based test for determining ornithine decarboxylase activity. Diamine oxidase from porcine kidney has also been used in a study to investigate N-linked oligosaccharide structures in diamine oxidase.


250 mg in poly bottle
1, 5, 10 g in poly bottle

Biochem/physiol Actions

Diamine Oxidase catalyzes the oxidation of monoamines, diamines, and histamine to aldehydes, ammonia, and hydrogen peroxide. The enzyme is classified as a copper amine oxidase and it is a key enzyme in nitrogen metabolism. Diamine oxidase is inhibited by diethyldithiocarbamate, phenylhydrazine, semicarbazide, cyanide, isonicotinic acid hydrazide.

Unit Definition

One unit will oxidize 1.0 μmole of putrescine per hr at pH 7.2 at 37 °C.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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Product Information Sheet

More Documents

Quotes and Ordering


Enzymatic Assay of Diamine Oxidase (E.C. No.

To standardize a procedure for the enzymatic assay of Diamine Oxidase.

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