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Long-arm Biotin Labeling Kit

The Long-arm Biotin Labeling Kit of Elabscience offering a collection of reagents required for biotin labeling, is designed to label antibody with amidogen(NH2-). Long-arm reduces the steric hindrance when several biotinylated molecules combine with the same avidin molecular compound, effectively optimizes the labeling and detection results. The biotin in the kit is sufficient and has been activated for direct use. The reagents are enough for approximately 3 labeling reactions each containing 0.1-2mg of antibody or other protein. Each kit includes 6 Filtration tubes for desalination of antibody labeling without the need for dialysis. The whole procedure is simple and can be completed in 90min in proficient operation.

Product Introduction



Chemical structure    


 Molecular Weight:568.

 Molecular formula:C26H41N5O7S.

 Spacer arm length:30.5 Å.


All-inclusive The  kit provides all the reagents required for biotin labeling

 Quick: The  whole procedure takes only 90min.

 Convenient:Desalination  can be achieved by Filtration tube, sparing the need for dialysis or gel  filtration.

 Flexible:The  procedure can be easily adapted to both small and large scales, with 0.1-2mg  of protein labeled each time.

 Perfect   results:The  kit has been optimized to determine the optimum labeling ratio of biotin to  antibody,      lowering the possibility of protein inactivation resulted from excess  biotin labeling.

 Cat. No.EBLK0004
Reactive GroupAmine  group (-NH2)
Size1 kit
Amount            3 reactions
StorageThe kit is stable for 1 year at 2-8°C before opening.

NH2-Reactive    Biotin


Labeling    Buffer




Filtration    tube


The  NH2-Reactive  Biotin reacts with the primary  amine(N-terminal and the side chain of lysine residue) specifically, forming  stable amide bond.


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