Background:

UltraAvidin is Leinco Technologies' trademark for a uniquely modified form of avidin which is isolated from chicken egg whites. With a molecular weight of 60,000 there are four identical subunits each capable of binding one molecule of biotin. UltraAvidin from Leinco Technologies has been de-glycosylated to prevent carbohydrate moieties from adhering to lectin-like receptors on the surface of cells, thus eliminating the possibility of false positives. Unlike native avidin, UltraAvidin has a near neutral pI which prevents electrostatic interactions with negatively charged serum or membrane proteins.

DyLight® 550 conjugated antibodies absorb light maximally around 562 (± 4 nm) and fluoresce with a peak around 576 nm. They are brighter than TRITC conjugates, and they are equal in brightness to Cy3 and Alexa Fluor 555. All Dylight® 550 antibodies are recommended for maximum sensitivity in all immunofluorescence detection procedures within the orange-red portion of the visible spectrum. DyLight® is a trademark of Thermo Fisher Scientific Inc. and its subsidiaries.