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N7885

Sigma-Aldrich

Neuraminidase from Vibrio cholerae

Type III, buffered aqueous solution, 0.2 μm filtered, 1-5 units/mg protein (Lowry, using NAN-lactose)

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Synonym(s):
Acyl-neuraminyl Hydrolase, Receptor-destroying enzyme, Sialidase
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:
NACRES:
NA.54

Quality Level

type

Type III

form

buffered aqueous solution

specific activity

1-5 units/mg protein (Lowry, using NAN-lactose)

mol wt

83 kDa

application(s)

diagnostic assay manufacturing

foreign activity

Protease and NAN-aldolase, present

storage temp.

2-8°C

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This Item
N6514N8271N5631
specific activity

1-5 units/mg protein (Lowry, using NAN-lactose)

specific activity

8-24 units/mg protein (Lowry, using NAN-lactose)

specific activity

≥135 units/mg protein

specific activity

10-20 units/mg protein (using 4MU-NANA), 3.5-8.0 units/mg protein (mucin)

mol wt

83 kDa

mol wt

-

mol wt

88 kDa, 95 kDa

mol wt

-

application(s)

diagnostic assay manufacturing

application(s)

-

application(s)

-

application(s)

-

foreign activity

Protease and NAN-aldolase, present

foreign activity

Protease and NAN-aldolase, present

foreign activity

β-Galactosidase, α-mannosidase, β-hexosaminidase, α-fucosidase, and proteases, none detected

foreign activity

Protease and NAN-aldolase, present

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

−20°C

General description

Neuraminidase enzymes are glycoside hydrolase enzymes that catalyze hydrolysis of terminal sialic acid residues. The most well-known are the viral nearamidases, which promote influenza virus release.

Application

Neuraminidase from Vibrio cholerae has been used in a study to assess its role in the binding and uptake of cholera toxin by susceptible cells. It has also been used in a study to investigate the preparation of a sodium substrate and its use in a fluorometric assay of neuraminidase.
Neurminidase is used as a cell-surface probe for glycoconjugate distribution and in substrate specificity studies.

Biochem/physiol Actions

Vibrio cholerae neuraminidase has been shown to promote cholera toxin infection by binding the toxin and aiding in its uptake by cells.

Quality

Preservative free.

Unit Definition

One unit will liberate 1.0 μmole of N-acetylneuraminic acid per min at pH 5.0 at 37 °C using NAN-lactose or bovine submaxillary mucin, unless otherwise specified. Prices based on units using NAN-lactose as substrate.

Physical form

Aqueous solution, pH 5.5, containing 0.15 M NaCl and 4 mM CaCl2.

Preparation Note

Chromatographically purified.

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

常规特殊物品

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Paola Rota et al.
Organic & biomolecular chemistry, 10(14), 2885-2894 (2012-03-08)
A simple protocol for the synthesis of N-perfluoroacylated and N-acylated glycals of neuraminic acid, with a secondary cyclic amine (morpholine or piperidine) at the 4α position, has been set-up, starting from peracetylated N-acetylneuraminic acid methyl ester that undergoes, sequentially to
J E Galen et al.
Infection and immunity, 60(2), 406-415 (1992-02-01)
Vibrio cholerae neuraminidase (NANase) is hypothesized to act synergistically with cholera toxin (CT) and increase the severity of a secretory response by increasing the binding and penetration of CT to enterocytes. To test this hypothesis, the NANase gene (nanH) from
Jai Woong Seo et al.
Nature communications, 11(1), 2102-2102 (2020-05-02)
Adeno-associated viruses (AAVs) are typically single-stranded deoxyribonucleic acid (ssDNA) encapsulated within 25-nm protein capsids. Recently, tissue-specific AAV capsids (e.g. PHP.eB) have been shown to enhance brain delivery in rodents via the LY6A receptor on brain endothelial cells. Here, we create
Fluorometric assay of neuraminidase with a sodium (4-methylumbelliferyl-alpha-D-N-acetylneuraminate) substrate.
M Potier et al.
Analytical biochemistry, 94(2), 287-296 (1979-04-15)
P C Reading et al.
Journal of virology, 74(11), 5190-5197 (2000-05-09)
Influenza viruses A/PR/8/34 (PR8; H1N1), A/Aichi/68 X-31 (HKx31; H3N2), and A/Beijing/89 X-109 (BJx109; H3N2) show marked differences in their ability to infect murine macrophages, including resident alveolar and peritoneal macrophages as well as the macrophage-derived cell line J774. The hierarchy

Protocols

Enzymatic Assay of Neuraminidase

Enzymatic Assay of Neuraminidase applies to products that have a specification for neuraminidase content by enzymatic determination.

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