Thermo Scientific - Pierce Protein Research Products
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Biotinylation Reagents - Amine Reactive 
Specifically label primary amines (lysine and N-terminus) with biotin, the most common reactive groups found on the surface of proteins.

EZ-Link Biotinylation Kits 
These easy-to-use biotin labeling kits contain everything you need for convenient, successful biotinylations. Biotinylate 1-10 mg of antibody or other protein with > 85% protein recovery. 


EZ-Link Micro Biotinylation Kits 
Micro Biotinylation Kits allow you to biotinylate 50-200 µg of antibodies and other proteins with recoveries generally > 80%. Single-dose biotin reagents provide consistent, reliable results! 


EZ-Link NHS-Biotin Reagents 
Water-insoluble biotin labeling reagents with spacer arms ranging from 13.5 - 30.5 A. At pH 7-9, covalently attach biotin to a primary amine group via a stable, amide bond. NHS-Biotin labeling reagents are uncharged and will penetrate cell membranes. 


EZ-Link NHS-Chromogenic Biotin Reagent and Kit 
Biotinylate and estimate the extent of biotinylation with one reagent. 


EZ-Link NHS-Iminobiotin 
Soft-release biotin labeling reagent features reversible binding to avidin preventing protein denaturation during purification. Binds to avidin at pH > 9.5 and dissociates at pH 4.0. Reacts with primary amines at pH 7-9 to form a stable amide bond.  


EZ-Link NHS-PEG-Biotin Reagents 
NHS-PEG4-Biotin and NHS-PEG12-Biotin reactions are amine-reactive NHS-ester reagents with long, flexible and hydrophilic polyethylene glycol (PEG) spacer arms. 


EZ-Link NHS-PEO Solid Phase Biotinylation Kit 
The solid-phase approach to antibody biotinylation provides more control over the reaction 


EZ-Link NHS-SS-Biotin 
The EZ-Link NHS-SS-Biotin Labeling Reagent from Pierce enables simple and efficient biotinylation of antibodies, proteins and other primary amine-containing molecules. 


EZ-Link NHS-SS-PEG4-Biotin 
EZ-Link NHS-SS-PEG4-Biotin Labeling Reagent enables simple and efficient biotin labeling of antibodies, proteins and any other primary amine-containing biomolecules in solution.  


EZ-Link PFP-Biotin 
PFP-biotin has similar properties to NHS-biotin. However, the PFP-ester is more reactive and will target both primary and secondary amines for biotinylation. 


EZ-Link Sulfo-NHS-Biotin Reagents 
Water-soluble biotin labeling reagents with spacer arms from 13.5 - 30.5 A. At pH 7-9, covalently attach biotin to a primary amine group via a stable, amide bond. Sulfo-NHS-Biotin labeling reagents are ideal to specifically label cell surface proteins. 


EZ-Link Sulfo-NHS-LC-Biotin 
Our most popular biotinylation reagent. Water-soluble, amine reactive biotin with a 22.4Å spacer arm. Excellent for labeling antibodies and other proteins. 


EZ-Link Sulfo-NHS-SS-Biotin 
This water-soluble, amine reactive biotin labeling reagent includes a cleavable spacer are. Ideal reagent for labeling cell surface proteins. 


EZ-Link TFP-PEO3-Biotin 
Biotinylate a primary or secondary amine and create a hydrophilic linkage. EZ-Link TFP-PEG-iotin tetraphenyl ester (TFP) reacts with primary amines found on lysine residues and the N-terminus and secondary amines such as histidine and tryptophan. 



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