As part of the LanthaScreen® TR-FRET Toolbox of assay reagents, LanthaScreen® Tb-labeled streptavidin is a "generic" reagent that can be used to easily label biotinylated biomolecules with terbium for use in TR-FRET assays. Although the terbium chelate donor can be directly attached to a biomolecule such as a protein or peptide, the Tb-labeled streptavidin can be "indirectly" attached to a target molecule through a biotin-mediated association with Tb-labeled streptavidin.
For Research Use Only. Not for use in diagnostic procedures.
LanthaScreen™ Tb-Streptavidin is supplied at 1 mg/ml and contains the streptavidin in HEPES buffered saline, 400 µl of the fluorescein-labeled, biotinylated peptide for use as a positive control, and 100 ml of TR-FRET Dilution Buffer. Store components as indicated in the product Certificate of Analysis (-20°C, or +20-30°C).