Neuraminidase from Vibrio cholerae

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

Acyl-neuraminyl Hydrolase, Receptor-destroying enzyme, Sialidase
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:

Quality Level


Type III


buffered aqueous solution

specific activity

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

mol wt

83 kDa

Featured Industry

Diagnostic Assay Manufacturing

foreign activity

Protease and NAN-aldolase, present

storage temp.


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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.


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.


1 unit in poly bottle
2 units in poly bottle

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.


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.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Hannah M Rowe et al.
Nature microbiology, 4(8), 1328-1336 (2019-05-22)
Epidemiological observations and animal models have long shown synergy between influenza virus infections and bacterial infections. Influenza virus infection leads to an increase in both the susceptibility to secondary bacterial infections and the severity of the bacterial infections, primarily pneumonias...
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)
Tadatsugu Imamura et al.
Journal of virology, 88(5), 2374-2384 (2013-12-29)
Increased detection of enterovirus 68 (EV68) among patients with acute respiratory infections has been reported from different parts of the world in the late 2000s since its first detection in pediatric patients with lower-respiratory-tract infections in 1962. However, the underlying...
Enzymatic Assay of Neuraminidase applies to products that have a specification for neuraminidase content by enzymatic determination.
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