Dynabeads™ M-280 Streptavidin, for OEM and industrial use only
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Thermo Scientific™

Dynabeads™ M-280 Streptavidin, for OEM and industrial use only

Uniform and superparamagnetic Dynabeads™, 2.8 μm in diameter, with a monolayer of recombinant streptavidin covalently coupled to the surface andRead more
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Catalog NumberVolume (Metric)
35137100 mL
3513610 mL
Catalog number 35137
Price (KRW)
-
Volume (Metric):
100 mL

Uniform and superparamagnetic Dynabeads™, 2.8 μm in diameter, with a monolayer of recombinant streptavidin covalently coupled to the surface and further blocked with BSA. The beads allow for efficient capture and downstream handling of your biotinylated ligand or target molecule. The streptavidin monolayer ensures negligible leakage, and the lack of excess adsorbed streptavidin ensures batch consistency and reproducibility of your results.

Streptavidin-coupled Dynabeads™ is the gold standard for isolation and handling of biotinylated antibodies, nucleic acids or other biotinylated ligands and targets. The liquid-phase behavior in combination with the superparamagnetic properties of the beads provide rapid reaction kinetics both in the coating process, separation and during washing of the analyte.

The product holds reputable Dynal high standards with respect to reproducibility and automation ability, and drives reliability for your assays.

Benefits and Features:
• Direct and fast capture of any biotinylated ligand or target
• Flexible solid-phase protocols with superior liquid-phase reaction kinetics
• Easy and reproducible handling in manufacturing
• Low charged and neutral beads, optimal for binding of proteins, peptides and antibodies
• Fast and efficient washing procedures
• High batch-to-batch reproducibility, securing consistent results in your application
• Well suited for automated protocols

Applications:
Efficient capture of biotinylated molecules. For direct⁄indirect isolation and downstream handling of nucleic acids, proteins⁄peptides and other target molecules. Due to their uniformity, excellent batch reproducibility and ease of adaptation to automated processes, Dynabeads™ have become the solid phase of choice for immunoassay development.

Binding capacity:
The size of the molecule and the biotinylation procedure will affect the binding capacity. The capacity also depends on steric availability and charge interaction between bead and molecule and between molecules. There are two or three biotin binding sites available for each streptavidin molecule on the surface of the bead after immobilization. One mg of Dynabeads™ M-280 Streptavidin typically binds 650-900 pmoles free biotin, 200 pmol biotinylated peptides, up to10 μg biotinylated antibody, approx. 10 μg ds-DNA or 200 pmol ss-Oligonucleotides.

Additional Info:
This specific product format is for large volume customers, available on an OEM basis. The product is also available in smaller volumes for end-users (Cat. no 112-05D, 112-06D and 602-10).

For Research Use Only. Not for use in diagnostic procedures.
Specifications
Concentration10 mg/mL
FormatBeads in suspension
High-throughput CompatibilityHigh-throughput Compatible
Ligand TypeStreptavidin
Product LineDYNAL, Dynabeads
Quantity100 mL
Shipping ConditionRoom Temperature
Volume (Metric)100 mL
Diameter (Metric)2.8 μm
Product TypeStreptavidin Magnetic Beads
Unit SizeEach
Contents & Storage
Store at 2°C to 8°C. To extend product stability, it is recommended that the gas volume above the solution be flushed with argon or nitrogen following each use.

Frequently asked questions (FAQs)

I am getting high background using Dynabeads M-280 Streptavidin magnetic beads. How can I prevent this from happening?

The background might be caused by nonspecific binding to the BSA on the bead surface. Alternatively, high background might be caused by nonspecific binding to streptavidin. Increasing either the pH or the salt concentration might help reduce the binding. Dynabeads M-270 Streptavidin magnetic beads might be a better alternative; these beads are not coated with BSA and are hydrophilic, as they are based upon carboxylic acid chemistry.

My Dynabeads magnetic beads are not pelleting well with the magnet. Do you have any suggestions for me?

Please review the following possibilities for why your Dynabeads magnetic beads are not pelleting:

- The solution is too viscous.
- The beads have formed aggregates because of protein-protein interaction.

Try these suggestions: - Increase separation time (leave tub on magnet for 2-5 minutes)
- Add DNase I to the lysate (~0.01 mg/mL)
- Increase the Tween 20 concentration to ~0.05% of the binding and/or washing buffer.
- Add up to 20 mM beta-merecaptoethanol to the binding and/or wash buffers.

Find additional tips, troubleshooting help, and resources within our Dynabeads Nucleic Acid Purification Support Center.

What is the binding capacity of streptavidin-coupled Dynabeads magnetic beads?

- One milligram of Dynabeads M-280 Streptavidin magnetic beads typically binds 650-900 pmol of free biotin, 200 pmol of biotinylated peptide, up to 10 µg of biotinylated antibody, 10 µg of biotinylated double-stranded DNA, or 200 pmol of biotinylated single-stranded oligonucleotides.

- One milligram of Dynabeads M-270 Streptavidin magnetic beads typically binds more than 950 pmol of free biotin, 200 pmol of biotinylated peptide, up to 10 µg of biotinylated antibody, 10 µg of biotinylated double- stranded DNA, or 200 pmol of biotinylated single-stranded oligonucleotides.

- One milligram of Dynabeads MyOne Streptavidin C1 magnetic beads typically binds more than 2,500 pmol free biotin, 400 pmol of biotinylated peptides, up to 20 µg of biotinylated antibody, 20 µg of biotinylated double-stranded DNA, or 500 pmol of biotinylated single-stranded oligonucleotides.

-One milligram of Dynabeads MyOne Streptavidin T1 magnetic beads typically binds 1,100-1,700 pmol free biotin, 400 pmol of biotinylated peptides, up to 20 µg of biotinylated antibody, 20 µg of biotinylated double- stranded DNA, or 400 pmol of biotinylated single-stranded oligonucleotides.

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

I have a long double-stranded DNA fragment I would like to isolate. What product do you recommend?

For biotin-labled DNA that is less than 1 kb, we recommend you use Dynabeads M270 Streptavidin and MyOne C1 magnetic beads. We recommend our Dynabeads KilobaseBINDER Kit, which is designed to immobilize long (>1 kb) double-stranded DNA molecules. The KilobaseBINDER reagent consists of M-280 Streptavidin-coupled Dynabeads magnetic beads along with a patented immobilization activator in the binding solution to bind to long, biotinylated DNA molecules for isolation. Please see the following link (https://www.thermofisher.com/us/en/home/life-science/dna-rna-purification-analysis/napamisc/capture-of-biotinylated-targets/immobilisation-of-long-biotinylated-dna-fragments.html) for more information in regards to long biotinylated DNA fragment isolation.

Find additional tips, troubleshooting help, and resources within our Dynabeads Nucleic Acid Purification Support Center.

Can I use Dynabeads magnetic beads to isolate single-stranded DNA templates?

Yes, Dynabeads magnetic beads can be used to isolate single-stranded DNA. Streptavidin Dynabeads magnetic beads can be used to target biotinylated DNA fragments, followed by denaturation of the double-stranded DNA and removal of the non-biotinylated strand. The streptavidin-coupled Dynabeads magnetic beads will not inhibit any enzymatic activity. This enables further handling and manipulation of the bead-bound DNA directly on the solid phase. Please see the following link (https://www.thermofisher.com/us/en/home/life-science/dna-rna-purification-analysis/napamisc/capture-of-biotinylated-targets/preparing-single-stranded-dna-templates.html) for more information in regards to single-stranded DNA capture.

Find additional tips, troubleshooting help, and resources within our Dynabeads Nucleic Acid Purification Support Center.