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Documenti fondamentali

A2264

Sigma-Aldrich

β-N-Acetylglucosaminidase from Canavalia ensiformis (Jack bean)

ammonium sulfate suspension, ≥10 units/mg protein

Sinonimo/i:

β-N-Acetylhexosaminidase

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About This Item

Numero CAS:
Classificazione EC (Enzyme Commission):
Numero CE:
Numero MDL:
Codice UNSPSC:
12352204
NACRES:
NA.54

Origine biologica

Canavalia ensiformis

Livello qualitativo

Stato

ammonium sulfate suspension

Attività specifica

≥10 units/mg protein

Attività estranea

α- and β-galactosidase, and α-L-fucosidase ≤0.1%
α-mannosidase ≤0.2%

Temperatura di conservazione

2-8°C

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Applicazioni

β -N-acetylglucosaminidase is a lysosomal enzyme used to hydrolyze N-acetyl-β-D-glucosaminides and N-acetyl-β-Dgalactosaminides. It is used in chemoenzymatic synthesis of oligosaccharides based on their effective transglycosylation of β-GlcNAc and β-GalNAcc. It may be a useful tool to study Alzheimer′s Disease . Acetylglucosaminidase from Canavalia ensiformis has been used to study enzymic detachment of biofilms .

Azioni biochim/fisiol

This enzyme, sometimes called β-N-acetylhexosaminidase, is reported to liberate terminal β-linked N-acetylglucosamine and N-acetylgalactosamine from a variety of substrates.
This enzyme, sometimes called β-N-acetylhexosaminidase, is reported to liberate terminal β-linked N-acetylglucosamine and N-acetylgalactosamine from a variety of substrates. The activity of β-N-actylglucosaminidase may be determined with the chromogenic substrate p-nitrophenyl-N-acetyl-β-D-glucosaminide. β-N-actylglucosaminidase hydrolyzes the terminal nonreducing N-acetyl-D-hexosamine residues. This enzyme contains two predominant isozymes, Hex A, a heterodimer, and Hex B, a homodimer. N-acetylglucosamine, acetamide, N-2-acetamido-2-deoyglucosylamine, N-acetylnojirimycin, and N-acetyldeoxynojirmycin are known inhibitors.

Definizione di unità

One unit will hydrolyze 1.0 μmole of p-nitrophenyl N-acetyl-β-D-glucosaminide to p-nitrophenol and N-acetyl-D-glucosamine per min at pH 5.0 at 25 °C.

Stato fisico

Suspension in 2.5 M (NH4)2SO4, pH 7.0

Risultati analitici

At pH 4.0, p-nitrophenyl β-N-acetylgalactosaminide is hydrolyzed at approximately 50% of the rate of hydrolysis of p-nitrophenyl β-N-acetylglucosaminide at pH 5.0.

Inibitore

N° Catalogo
Descrizione
Determinazione del prezzo

Codice della classe di stoccaggio

12 - Non Combustible Liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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Mohammed A Al-Fattani et al.
Journal of medical microbiology, 55(Pt 8), 999-1008 (2006-07-20)
Matrix material was extracted from biofilms of Candida albicans and Candida tropicalis and analysed chemically. Both preparations contained carbohydrate, protein, hexosamine, phosphorus and uronic acid. However, the major component in C. albicans matrix was glucose (32%), whereas in C. tropicalis
Chaeyoung Kim et al.
Neurobiology of aging, 34(1), 275-285 (2012-04-17)
Deposition of β-amyloid (Aβ) as senile plaques and disrupted glucose metabolism are two main characteristics of Alzheimer's disease (AD). It is unknown, however, how these two processes are related in AD. Here we examined the relationship between O-GlcNAcylation, which is
Douglas N Sanders et al.
Molecular genetics and metabolism, 108(1), 70-75 (2012-12-26)
GM2 gangliosidosis is a fatal lysosomal storage disease caused by a deficiency of β-hexosaminidase (EC 3.2.1.52). There are two major isoforms of the enzyme: hexosaminidase A composed of an α and a β subunit (encoded by HEXA and HEXB genes
Federica Vernuccio et al.
Recenti progressi in medicina, 103(12), 559-563 (2012-12-22)
Cardiorenal syndrome is a pathophysiological heart and kidney disorder, in which acute or chronic dysfunction of one organ induces a damage in the other. It's a syndrome more and more often encountered in clinical practice and this implies the need
Tyler Mark Pierson et al.
Molecular genetics and metabolism, 108(1), 65-69 (2012-11-20)
A 12 year-old female presented with a seven-year history of progressive muscle weakness, atrophy, tremor and fasciculations. Cognition was normal. Rectal biopsy revealed intracellular storage material and biochemical testing indicated low hexosaminidase activity consistent with juvenile-onset G(M2)-gangliosidosis. Genetic evaluation revealed

Articoli

Instructions for working with enzymes supplied as ammonium sulfate suspensions

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