| Field | Specification |
|---|---|
| Mfr No | |
| Assay Time | |
| Detection Method | |
| Product Type | |
| Sample Type(s) | Biological |
| Shipping | |
| Species | |
| Storage |
Overview
For quantitative determination of neuraminidase activity and screen for neuraminidase inhibitor. The assay uses OD570nm, or FL530/585nm for signal readout. Compatible sample input includes Biological. Typical stated assay timing is 60 min.
Key elements and design rationale
- Readout format: OD570nm, or FL530/585nm supports plate-based signal acquisition and consistent comparison across matched samples.
- Sample compatibility: The stated sample scope includes Biological, which is useful when aligning matrix type with calibration and control design.
- Analytical range context: The supplied specifications include a stated detection limit of OD, FL: 1, 0.01U/L for interpreting low-signal samples.
- Feature emphasis: Sensitive and accurate. Linear detection range at 37°C in 96-well plate: 0.1 to 10 U/L for colorimetric assays and 0.01 to 2 U/L for fluorimetric assays.
Additional feature notes highlight Simple and convenient. The homogeneous assay requires only two absorbance measurements. The assay can be completed in 60 min; High-throughput. It can be readily automated as a high-throughput 96-well plate assay to screen thousands of samples per day. Available format information for this listing includes 100 Tests.
Biological background
This product is centered on measurement of neuraminidase within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.
More details
NEURAMINDASE (also known as Sialidase) is an enzyme that hydrolyzes terminal sialic acid residues on poly-saccharide chains. It is predominantly expressed in microorganisms such as bacteria and viruses. Cleavage of sialic acid residues by neuraminidase is believed to play several roles in infection by influenza viruses. It is thought to assist in the penetration of mucosal linings, the invasion of target cells, the elution of progeny viruses from infected cells, and the prevention of self-aggregation. Thus, neuraminidase is an important target for influenza drug development and simple, direct, and automation-ready procedures for measuring neuraminidase activity find wide applications in research and drug discovery. BioAssay Systems neuraminidase assay measures the sialic acid released by neuraminidase in one step. The change in color intensity of the reaction product at 570nm or fluorescence intensity at λex/em = 530/585nm is directly proportional to neuraminidase activity in the sample
Detection method
Colorimetric (OD 570 nm) or Fluorescent (FL 530/585 nm).
Detection limit and analytical sensitivity
Reported detection limit(s): Colorimetric: 1 U/L / Fluorescent: 0.01 U/L. Additional source wording: OD, FL: 1, 0.01U/L.
Procedures and timing
Stated procedure or timing information: 60 min.
Research relevance and current trends
- Plate-based quantification and side-by-side group comparison remain central use cases for this assay format.
- The product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.
- The description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.
Common research applications
- Quantify neuraminidase in biological by OD570 nm, or FL530/585 nm readout.
- Compare treatment or phenotype groups using matched biological handling.
- Monitor time-course or pre/post changes in biological across study conditions.
Interpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.
Notes for experimental interpretation
- Matrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.
- Use appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.
Could you tell me the chemical components of the substrate? What kind of sialic acid?
The substrate is fetuin, a heavily sialidated protein from fetal bovine serum. Our assay is based on the detection of N-acetyl neuraminic acid (NANA, Neu5Ac) in a coupled enzyme reaction leading to the formation of a colored and fluorescent product. Influenza neuraminidase will cleave terminal NANA residues from fetuin.
For laboratories requiring additional technical capacity, we provide scientific support services including assay execution, method guidance, product sourcing, and customization to align the assay with specific experimental objectives. If you need assistance selecting the appropriate kit configuration, adapting the workflow to your application, or identifying related research services, please click Talk to a Scientist, email support@biohippo.com, or review our Research Services; a member of our scientific team will follow up with recommendations tailored to your study.
A sialo-oligosaccharide-rich mucin-like molecule specifically detected in the submandibular glands of aged mice
Lida, M. et al (2019). A sialo-oligosaccharide-rich mucin-like molecule specifically detected in the submandibular glands of aged mice. Archives of oral biology, 97, 52-58. Assay: Neuraminidase in mouse salivary gland.
Emergence of H7N9 Influenza A Virus Resistant to Neuraminidase Inhibitors in Nonhuman Primates
Itoh, Y et al (2015). Emergence of H7N9 Influenza A Virus Resistant to Neuraminidase Inhibitors in Nonhuman Primates. Antimicrob Agents Chemotherapy. 59(8):4962-73. Assay: Neuraminidase in macaque fluid samples.
The Sialidases of Clostridium perfringens Type D Strain CN3718 Differ in Their Properties and Sensitivities to Inhibitors
Jihong L, et al (2014). The Sialidases of Clostridium perfringens Type D Strain CN3718 Differ in Their Properties and Sensitivities to Inhibitors. Appl Environ Microbiol. 80(5): 1701-1709. Assay: Neuraminidase in Clostridium perfringens cells.
Evaluation of antibody response in mice against avian influenza A (H5N1) strain neuraminidase expressed in yeast Pichia pastoris
Subathra, M et al (2014). Evaluation of antibody response in mice against avian influenza A (H5N1) strain neuraminidase expressed in yeast Pichia pastoris. J Biosci. 39(3):443-51. Assay: Neuraminidase in Pichia pastoris cells.
Evaluation of antibody response in mice against avian influenza A (H5N1) strain neuraminidase expressed in yeast Pichia pastoris
Subathra, M et al (2014). Evaluation of antibody response in mice against avian influenza A (H5N1) strain neuraminidase expressed in yeast Pichia pastoris. Journal of Biosciences: 1-9. Assay: Neuraminidase in yeast purified Lysate.
Li, J., et al. (2013) CodY is a global regulator of virulence-associated properties for. Clostridium perfringens: 00770-
Li, J., et al. (2013) CodY is a global regulator of virulence-associated properties for. Clostridium perfringens: 00770-13. Assay: Neuraminidase in C. perfringens cells.
