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Update to Avantor’s response to the coronavirus (COVID-19) pandemic

Pierce™ EZ-Link™ Amine Reactive Biotinylation Reagents, Thermo Scientific

Supplier: Paul Schöndorf Metallwaren GmbH
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20217 21312 21313 21330 21336 21343 21362 21363 21441 21442
PI20217EA 238.11 USD InStock
PI20217 PI21312 PI21313 PI21330 PI21336 PI21343 PI21362 PI21363 PI21441 PI21442
Pierce™ EZ-Link™ Amine Reactive Biotinylation Reagents, Thermo Scientific
Protein Linking and Labeling Systems
The amine group is the most common target for modifying protein molecules because it is abundant in the majority of proteins either due to the presence of lysine bearing amino side chain functionality or the N-terminal-amine. Amine-reactive biotinylation reagents can be divided into two groups based on water solubility: NHS-esters and sulfo-NHS-esters.

NHS-esters of biotin are water-insoluble and membrane-permeable because they do not possess a charged group

Sulfo-NHS-esters are water soluble and useful for applications that cannot tolerate organic solvents. Sulfo-NHS-esters of biotin are recommended for use as cell surface biotinylation reagents. Because of the charged sulfonate group, these compounds do not penetrate the plasma membrane, thus sulfo-NHS-esters biotinylation is restricted to the cell surface.

PEGylated esters transfer water solubility to the biotinylated molecule, thus reducing aggregation of labeled proteins stored in solution. The PEG spacer arm also gives the reagent a long and flexible connection to minimize steric hindrance for binding to avidin molecules.

They may be used for biotinylating internal as well as external cellular components. Since NHS-esters of biotin are water-insoluble, for reactions in aqueous solution they must first be dissolved in an organic solvent, such as DMSO and DMF.


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