Streptavidin is a tetramer composed of four identical subunits, each capable of binding one molecule of biotin. Thus, one molecule of streptavidin can bind four molecules of biotin with very high affinity (Kd ~ 10⁻¹⁵). Compared to avidin, streptavidin has a lower isoelectric point and lacks glycosylation, resulting in significantly lower non-specific binding in antigen-antibody detection systems.Streptavidin exhibits excellent thermal stability and tolerance toward protein denaturants such as acids, urea, and SDS. These properties make the biotin-streptavidin system highly advantageous due to its strong affinity, high sensitivity, specificity, stability, and signal amplification capability. It is widely used in immunology, molecular biology, histochemistry, and related fields.This product is produced by cloning and expressing the core functional sequence of streptavidin while retaining its binding activity. Compared to native streptavidin, it demonstrates higher specific activity per unit mass.Features: High affinity, high purity, stable performance
BWS001 Recombinant Streptavidin, Wild TypeMolecular Weight: ~66.4 kDa (16.6 kDa/subunit)Activity: ≥12.5 U/mg (1 U binds 1 μg biotin)BWS002 Recombinant Streptavidin (Core), LyophilizedMolecular Weight: ~53.6 kDa (13.4 kDa/subunit)BWS003 Recombinant Streptavidin (Core)Molecular Weight: ~53.6 kDa (13.4 kDa/subunit)BWS004 Recombinant Streptavidin (with Cys)Molecular Weight: ~54 kDa (13.5 kDa/subunit)BWS005 Recombinant Streptavidin (High Sensitivity)BWS006 Recombinant Streptavidin (T-Line)BWS007 Recombinant Streptavidin (C-Line)
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