Thermo Scientific™ Pierce™ Iodination Beads
On demand
Order number :
28665
Thermo Scientific™ Pierce™ Iodination Beads
Thermo Scientific Pierce Iodination Beads are 3mm-diameter polystyrene beads that are coated with an oxidizing reagent, which provides efficient activation of iodine-125 for protein or peptide iodination procedures.
The coated iodination beads provide for convenient and efficient iodine-labeling without the hassles and damaging oxidative effects normally associated with chloramine T and other solution-based methods. One or two beads can be added per milliliter of protein solution and then easily removed following the labeling reaction, thereby completely removing the oxidizing reagent from the protein.
Features
- Derivatized, uniform, nonporous polystyrene beads
- Remarkably reproducible iodinations
- Iodine-125 incorporation as high as 99%; labeled protein recovery > 90%
- Functions over a broad pH and temperature range
- Iodinates in the presence of azides, detergents, urea and high salt
- Allows efficient iodination of cell membrane surface proteins
- More gentle method for iodination than soluble chloramine-T because there is no contact between the protein and the immobilized oxidizing agent (Markwell, 1982)
- Fast and easy to use…iodinations complete in 2-15 minutes
- Reaction stopped by simply removing beads from reaction mixture with tweezers or pasteur pipet; no reducing agent necessary to terminate reaction
- More control over the incubation time
- Iodinate up to 500 µg of tyrosine-containing peptide or protein/bead
- Can be used to quantitatively iodinate histidine at pH 8.22
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