A6680
N-Acetylneuraminic Acid Aldolase from microorganisms
lyophilized powder, ≥20 units/mg protein (biuret)
Synonyme(s) :
N-Acetylneuraminate Pyruvate Lyase, N-Acetylneuraminic Acid Lyase, NANA Aldolase, Sialic Aldolase
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25 UNITS
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About This Item
Numéro CAS:
Beilstein:
2697172
Numéro MDL:
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.32
1 300,00 $
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Produits recommandés
Forme
lyophilized powder
Activité spécifique
≥20 units/mg protein (biuret)
Poids mol.
~98 kDa
Température de stockage
−20°C
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Application
This enzyme is useful for enzymatic determination of N-acetylneuraminic acid and sialic acid when
coupled with the related enzymes in clinical analysis.
For industrial use, this enzyme is useful for enzymatic synthesis of sialic acid.
coupled with the related enzymes in clinical analysis.
For industrial use, this enzyme is useful for enzymatic synthesis of sialic acid.
Used in the Sialic Acid Quantification Kit, SIALIC-Q
Propriétés physiques
Isoelectric point: 4.6 ± 0.1
Michaelis constant: 2.5 x 10‾3M (N-Acetylneuraminic acid)
Structure: 3 subunits (approx. 35,000) per mol of enzyme
Inhibitors: p-Chloromercuribenzoate, sodium dodecyl sulfact, Hg++, Ag+
Optimum pH: 7.5– 8.0
Optimum temp: 70°C
pH Stability: pH 6.0–9.0 (10°C, 25hr)
Thermal stability: Below 65°C (pH 7.5, 30 min)
Michaelis constant: 2.5 x 10‾3M (N-Acetylneuraminic acid)
Structure: 3 subunits (approx. 35,000) per mol of enzyme
Inhibitors: p-Chloromercuribenzoate, sodium dodecyl sulfact, Hg++, Ag+
Optimum pH: 7.5– 8.0
Optimum temp: 70°C
pH Stability: pH 6.0–9.0 (10°C, 25hr)
Thermal stability: Below 65°C (pH 7.5, 30 min)
Définition de l'unité
One unit will release 1.0 μmole of pyruvate from NANA per min at pH 7.7 at 37 °C.
Forme physique
Lyophilized powder containing mannitol and EDTA
Code de la classe de stockage
10 - Combustible liquids
Classe de danger pour l'eau (WGK)
WGK 3
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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Ivan Campeotto et al.
Journal of molecular biology, 404(1), 56-69 (2010-09-10)
The substrate specificity of Escherichia coli N-acetylneuraminic acid lyase was previously switched from the natural condensation of pyruvate with N-acetylmannosamine, yielding N-acetylneuraminic acid, to the aldol condensation generating N-alkylcarboxamide analogues of N-acetylneuraminic acid. This was achieved by a single mutation
Jacqueline Vogel-Scheel et al.
Applied and environmental microbiology, 76(15), 5181-5187 (2010-06-22)
To study the adaptation of an intestinal bacterium to its natural environment, germfree mice were associated with commensal Escherichia coli MG1655. Two-dimensional gel electrophoresis was used to identify proteins differentially expressed in E. coli MG1655 collected from either cecal contents
Chung-Hsien Cheng et al.
Microbial cell factories, 9, 63-63 (2010-08-31)
Overexpression of recombinant proteins usually triggers the induction of heat shock proteins that regulate aggregation and solubility of the overexpressed protein. The two-dimensional gel electrophoresis (2-DE)-mass spectrometry approach was used to profile the proteome of Escherichia coli overexpressing N-acetyl-D-glucosamine 2-epimerase
Sean R A Devenish et al.
Biochemical and biophysical research communications, 388(1), 107-111 (2009-08-04)
As part of a general study into the impact of quaternary structure on enzyme function, a library of 31 point mutations were engineered at the dimer-dimer interface of the homotetrameric (beta/alpha)(8)-barrel protein, N-acetylneuraminate lyase (NAL, EC 4.1.3.3). Disruption of the
Yinan Zhang et al.
Applied microbiology and biotechnology, 86(2), 481-489 (2009-11-06)
N-acetyl-D-neuraminic acid (Neu5Ac) is a precursor for producing many pharmaceutical drugs such as zanamivir which have been used in clinical trials to treat and prevent the infection with influenza virus, such as the avian influenza virus H5N1 and the current
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