NeutrAvidin Protein
NeutrAvidin Protein
Thermo Scientific™

NeutrAvidin Protein

Thermo Scientific™ NeutrAvidin Protein is a specially-prepared form of avidin that decreases background in biotin-binding.Features include:• Near-neutral isoelectric point—pI =Read more
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Catalog NumberQuantity
31050100 mg
3100010 mg
310551000 mg
Catalog number 31050
Price (HKD)
-
Quantity:
100 mg
Thermo Scientific™ NeutrAvidin Protein is a specially-prepared form of avidin that decreases background in biotin-binding.

Features include:
Near-neutral isoelectric point—pI = 6.3, more neutral than native avidin
Nearly devoid of glycosylation—decreased possibility of lectin binding compared to native avidin
No RYD recognition sequence—no known off-target binding domains like streptavidin
Affordable—significantly less expensive than streptavidin

NeutrAvidin Protein is deglycosylated native avidin from egg whites. Removal of the excess carbohydrate by an exclusive process yields a protein with a more neutral isoelectric point and less nonspecific binding properties. Purified NeutrAvidin Protein provides exceptional performance in western blot, ELISA, and IHC applications that require biotin-binding probes. Assay specificity, sensitivity, and signal-to-noise ratios with NeutrAvidin Protein are generally equivalent or better than with the significantly more expensive streptavidin.

Avidin is a glycoprotein found in the egg white and tissues of birds, reptiles, and amphibia. The biotin-binding protein contains four identical subunits having a combined mass of 67,000-68,000 daltons. Removing the glycosylation from avidin yields NeutrAvidin Protein with a mass of 60,000 daltons. Carbohydrate-based lectin binding is reduced to undetectable levels, yet biotin-binding affinity is retained. NeutrAvidin Protein offers the advantages of a neutral pI to minimize nonspecific adsorption, along with lysine residues that remain available for derivatization or other customized conjugation. NeutrAvidin Protein yields the lowest nonspecific binding among the known biotin-binding proteins. The specific activity for biotin binding is approximately 14 μg/mg of protein, which is near the theoretical maximum activity.

Related products
NeutrAvidin™ Protein, Horseradish Peroxidase Conjugated
NeutrAvidin™ Protein, Alkaline Phosphatase Conjugated
NeutrAvidin™ Protein, Fluorescein Conjugated
NeutrAvidin™ Protein, Maleimide-Activated

For Research Use Only. Not for use in diagnostic procedures.
Specifications
Label or DyeUnlabeled
Protein FamilyAvidin
Quantity100 mg
Target MoleculeBiotin
FormSolid
Unit SizeEach
Contents & Storage
Upon receipt store product 4°C. Product is shipped at ambient temperature.

Frequently asked questions (FAQs)

What is the definition of superparamagnetic, and what does this mean for my cell isolation application with Dynabeads magnetic beads?

Superparamagnetic means that the Dynabeads magnetic beads exhibit magnetic properties when placed within a magnetic field, but have no residual magnetism when removed from the magnetic field.

This means that your targeted cells, proteins, or nucleic acids are only subjected to magnetic forces during the time the beads are on the magnet. The beads do not aggregate, but remain evenly dispersed in suspension.

Find additional tips, troubleshooting help, and resources within our Dynabeads Cell Isolation and Expansion Support Center.

Are the antibodies on your Dynabeads magnetic beads for cell isolation/activation/expansion covalently bound to the beads?

Yes. The antibodies are covalently bound and should be very stable in your applications.

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

What is the average shelf life of Dynabeads magnetic beads?

Depending on the antibody coated on the Dynabeads magnetic beads, the shelf life can vary from 24-36 months.
Some kits may have 18 months shelf life depending on other components supplied in the kit. The kits are guaranteed for 6 months from when you receive them.

Find additional tips, troubleshooting help, and resources within our Dynabeads Nucleic Acid Purification Support Center as well as our Protein Immunoprecipitation (IP), Co-Immunoprecipitation (Co-IP), and Pulldown Support Center.

What is the shelf life of NeutrAvidin Protein?

NeutrAvidin Protein is covered under our general 1-year warranty and is guaranteed to be fully functional for 12 months from the date of shipment, if stored as recommended (4 degrees C). Please see section 8.1 of our Terms & Conditions of Sale for more details.