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B2787
Biotinylated Molecular Weight Marker
mol wt 6,500-180,000 Da
Synonym(s):
protein markers, protein molecular weight markers, protein standards
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| Size/SKU | Availability | Price |
|---|---|---|
1 vial | Estimated to ship onOctober 30, 2026fromMILWAUKEE | $234.00 |
5 x 1 vial | Estimated to ship onSeptember 22, 2026fromMILWAUKEE | $924.00 |
About This Item
UNSPSC Code:
12352200
NACRES:
NA.25
eCl@ss:
34058011
$234.00
Estimated to ship onOctober 30, 2026Details
form
lyophilized powder
Quality Segment
usage
vial sufficient for 200 applications (on 10 cm × 10 cm mini gels)
mol wt
6,500-180,000 Da
packaging
vial of 0.1 mg protein (also contains 0.1 mg NaCl and 0.1 mg sucrose)
storage temp.
−20°C
Application
For SDS-PAGE and protein transfer, the Biotinylated Molecular Weight Standard Mixture contains proteins, which have been biotin conjugated for use as SDS-PAGE standards for the estimation of the molecular weights of blotted proteins. Visualization is accomplished using streptavidin-peroxidase (Cat. No. S2438) and a color development reagent such as 4-Chloro-1-naphthol (Cat. No. C8890), eliminating the need to cut out separate lanes for general protein stains and can be performed simultaneously with immunostaining procedures. These standards may be used with either the Laemmli or the Weber and Osborn SDS-PAGE procedures.
Preparation Note
Each vial is reconstituted with 1 mL of 1x sample buffer (Cat. No. S3401) and incubated for 2-3 minutes at 100 °C.
Other Notes
Contains nine biotinylated proteins (approx 0.1 mg total).
This product contains:
- α2-macroglobulin (equine serum)
- β-galactosidase (E. coli)
- phosphorylase b (rabbit muscle)
- catalase (bovine liver)
- alcohol dehydrogenase (yeast)
- carbonic anhydrase (bovine erythrocyte)
- trypsin inhibitor (soy bean)
- lysozyme (chicken egg)
- aprotinin (bovine lung)
1 of 1
This Item | |||
|---|---|---|---|
| description mol wt 6,500-180,000 Da | description mol wt 26,600-180,000 Da | description mol wt 8,000-220,000 Da | description low range, mol wt 6,500-66,000 Da |
| form lyophilized powder | form - | form solution | form lyophilized powder |
| storage temp. −20°C | storage temp. 2-8°C | storage temp. −20°C | storage temp. 2-8°C |
| Quality Level 200 | Quality Level 200, 400 | Quality Level 200 | Quality Level 200 |
| mol wt 6,500-180,000 Da | mol wt 26,600-180,000 Da | mol wt 8,000-220,000 Da | mol wt 6,500-66,000 Da |
| packaging vial of 0.1 mg protein (also contains 0.1 mg NaCl and 0.1 mg sucrose) | packaging - | packaging - | packaging - |
| usage vial sufficient for 200 applications (on 10 cm × 10 cm mini gels) | usage - | usage - | usage vial sufficient for 50-100 PhastGels, sufficient for 10-20 large gels (16 × 18 cm), sufficient for 20-30 mini-gels (10 × 10 cm) |
Storage Class
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
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Can I see a picture of this marker? I would like to use it for chemiluminescent wester blotting
1 answer -
What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
Helpful?
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The data sheets for Products SDS7B2 and B2787 do not provide a specific recommendation on how long the solutions of these molecular weight marker mixtures can be kept frozen at -20°C. What information can you provide?
1 answer-
Our R&D group recommends that after reconstitution, the solutions should be divided into aliquots and immediately frozen; avoid repeated freeze / thaw cycles. The aliquots should last at least a year at -20°C. Storage at -80°C would even be better, if it is convenient.
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