Thermo Scientific™

EZ-Link™ Iodoacetyl-PEG2-Biotin

Catalog number: 21334
Thermo Scientific™

EZ-Link™ Iodoacetyl-PEG2-Biotin

Catalog number: 21334
Catalog Number
21334
Unit Size
50 mg
Price (USD)
Price: 278.00
Your Price:
Availability
-
Quantity
Catalog NumberUnit SizePrice (USD)AvailabilityQuantity
2133450 mg
Price: 278.00
Your Price:
-
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Thermo Scientific EZ-Link Iodoacetyl-PEG2-Biotin is a mid-length, haloacetyl-activated, sulfhydryl-reactive biotinylation reagent that contains a 2-unit ethylene glycol in its spacer arm for increased water-solubility characteristics.

Features of EZ-Link Iodoacetyl-PEG2-Biotin:

Protein labeling—biotinylate antibodies or other proteins for use in protein methods
Thiol-reactive—reacts with sulfhydryls (-SH), such as the side-chain of cysteine (C)
Iodoacetyl-activated—perform reactions in the dark at pH 7.5 to 8.5 in Tris or borate buffer
Pegylated—spacer arm contains a hydrophilic, 2-unit, polyethylene glycol (PEG) group
Enhances solubility—pegylation imparts water solubility to the biotinylated molecule, helping to prevent aggregation of biotinylated antibodies stored in solution
Irreversible—forms permanent thioether bonds; spacer arm cannot be cleaved
Solubility—can be dissolved directly in aqueous buffers for labeling reactions
Medium length—spacer arm (total length added to target) is 24.7 angstroms

Iodoacetyl-PEG2-Biotin enables simple and efficient biotin labeling of antibodies, cysteine-containing peptides and other thiol-containing molecules. The iodoacetyl group reacts with reduced thiols (sulfhydryl groups,—SH) at alkaline pH to form stable thioether bond. The hydrophilic, 2-unit polyethylene glycol (PEG) spacer arm imparts water solubility that is transferred to the biotinylated molecule, thus reducing aggregation of labeled proteins stored in solution. The PEG segment adds length and flexibility to the spacer arm, minimizing steric hindrance involved with binding to avidin molecules.

We manufacture biotin reagents to ensure the highest possible overall product integrity, consistency and performance for the intended research applications.

Biotinylation reagents differ in reactivity, length, solubility, cell permeability and cleavability. Three types of sulfhydryl-reactive compounds are available: maleimido, iodoacetyl and pyridyldithiol. Iodoacetyl reagents specifically react with sulfhydryl groups (-SH) at pH 8.3 to form permanent thioether bonds.

In proteins, sulfhydryls exist where there are cysteine (C) residues. Cystine disulfide bonds must be reduced to make sulfhydryl groups available for labeling. Hinge-region disulfide bridges of antibodies can be selectively reduced to make functional half-antibodies that can be labeled.
For Research Use Only. Not for use in diagnostic procedures.

Specifications

Product Type
Iodoacetyl-PEG2-Biotin
Quantity
50 mg
Product Line
EZ-Link™
Cell Permeability
Cell-Impermeant
Chemical Reactivity
Thiol
Reactive Moiety
Haloacetyl
Solubility
DMF (Dimethylformamide), DMSO (Dimethylsulfoxide), Water
Label or Dye
Biotin
Label Type
Biotin & Analogs
Spacer
Mid-Length, Pegylated

Contents & Storage

Store desiccated at 4°C. Shipped at ambient temperature.