Gold Nanoparticle Streptavidin Conjugate
Our 40 nm gold nanoparticle streptavidin conjugate is engineered for high stability and consistent performance in lateral flow assays. The nanoparticles are functionalized with a proprietary surface chemistry that enables robust streptavidin attachment while maintaining colloidal stability under typical assay conditions.
Streptavidin retains high-affinity binding to biotin (Kd ~10⁻¹⁴–10⁻¹⁵ M), enabling rapid and reliable capture of biotinylated targets with minimal dissociation during assay runtime.
This formulation avoids many of the instability issues associated with passive adsorption-based conjugates, such as protein desorption and aggregation, resulting in improved shelf life and reproducibility.
Product Configuration:
-
1 mL of 10 OD 40 nm streptavidin gold conjugate* (ready to use)
-
50 mL RNase-free lateral flow running buffer optimized for streptavidin–biotin interactions
For larger volumes or custom formulations, contact: sales@attogene.com
Publication using our gold:
- Waller L et al. High sensitivity, rapid detection of virus in high traffic environments. Frontiers in bioengineering and biotechnology. 2022;10:877603. https://doi.org/10.3389/fbioe.2022.877603
*Equivalent Amount
Streptavidin 40 nm 10 OD Colloidal Gold was featured in the Lateral Flow Immunoassay section of the paper.
