D7876
Diamine Oxidase from porcine kidney
≥0.05 unit/mg solid
Synonym(s):
Amine:oxygen oxidoreductase (deaminating) (pyridoxal-containing)
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About This Item
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biological source
Porcine kidney
form
solid
specific activity
≥0.05 unit/mg solid
mol wt
170 kDa
solubility
100 mM sodium phosphate buffer, pH 7.2: soluble 10 mg/mL
foreign activity
monoamine oxidase (benzylamine substrate) ≤1%
storage temp.
−20°C
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.
Application
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.
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
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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Diamine oxidase and catalase are expressed in the same cells but are present in different subcellular compartments in porcine kidney.
H G Schwelberger et al.
Inflammation research : official journal of the European Histamine Research Society ... [et al.], 48 Suppl 1, S81-S82 (1999-06-01)
A Rinaldi et al.
Preparative biochemistry, 12(1), 11-28 (1982-01-01)
Several methods for the isolation of apparently homogeneous pig kidney diamine oxidase have been reported in recent years (1-7), but these procedures allow to obtain only little amounts of material making very difficult the study of the molecular properties of
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The Malaysian Journal of Analytical Sciences (2006)
Y Huang et al.
Carbohydrate research, 323(1-4), 111-125 (2000-04-27)
Structures of the N-linked glycans released from porcine kidney diamine oxidase (DAO) were characterized utilizing various analytical techniques, including matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI/TOF-MS), high-performance capillary electrophoresis (HPCE), and high-pH anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD). The
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