What makes Sulfo-SBED Biotin Label Transfer Reagent useful for investigation of protein interactions?
Sulfo-SBED allows one to transfer a biotin tag from an amine-containing protein to a second protein (reacted with the phenyl azide). The amine-containing protein can be removed by reduction of the disulfide in the Sulfo-SBED spacer arm. This leaves just the second biotinylated protein for detection.
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Should the Sulfo-SBED coupling reaction be protected from light?
During the initial coupling procedure, the solutions should be protected from light to avoid decomposition of the phenyl azide functional group.
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Which reaction should take place first during Sulfo-SBED crosslinking?
The NHS-ester end of the crosslinker is subject to hydrolysis, therefore the amine-containing protein should be conjugated prior to the photoactivatable (aryl azide) reaction.
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What is the appropriate wavelength for the conjugation of the photoactivatable group in Sulfo-SBED Biotin Label Transfer Reagent ?
UV light at wavelengths greater than 300 nm are appropriate for conjugation.
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Is the Sulfo-SBED crosslinker soluble in organic solutions as well as aqueous solutions?
Yes, Sulfo-SBED is soluble in aqueous as well as organic solutions. It is most soluble in organics such as DMF and DMSO.
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