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Thermo Scientific™ Pierce™ Sulfo-SBED Biotin Label Transfer Reagent

Chemically tag purified proteins at primary amines to covalently crosslink and transfer biotinylation to protein interaction binding partners.

Manufacturer:  Thermo Scientific™ 33034

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Catalog No. PI33034




Thermo Scientific™ Pierce Sulfo-SBED Biotin Label Transfer Reagent is a multifunctional reagent for labeling a purified protein and then covalently transferring the attached biotin tag onto specific interactors of that protein.

Ready-to-use kit eliminates the need to prepare the necessary buffers or purchase the critical reagents necessary to perform a label transfer experiment. Key reagents, Sulfo-SBED and DTT, are supplied in unique, no-weigh, single-use packaging.


  • Sulfo-NHS ester reacts with primary amines at pH 7-9
  • Aryl azide conjugates randomly when activated with UV light
  • Cleavable disulfide bond allows biotin label transfer
  • Discover protein interactions without radiolabeling


No-Weigh Sulfo-SBED Label Transfer Reagent, 8 × 1mg; BupH Phosphate Buffered Saline, 1 Pk. (makes 500mL); Label Transfer Buffer (20X), 200mL (makes 4L); Streptavidin-HRP Conjugate, 0.1mg; No-Weigh Dithiothreitol (DTT), 8 × 7.7mg; Slide-A-Lyzer MINI Dialysis Units plus Float, 10K MWCO, 10-100μL, 10 units/Pk.

Description & Specifications


Sulfo-N-hydroxysuccinimidyl-2-(6-[biotinamido]-2-(p-azido benzamido)-hexanoamido) ethyl-1,3'-dithioproprionate; powder solid
8 x 1mg
18mL of typical 1X (0.5mM) reaction solution (total), or 8 separate uses
14.3; 21.2; 24.7Å
Pierce Sulfo-SBED Biotin Label Transfer Reagent, No-Weigh Format