Datura stramonium (DSA) (Biotin)

Katalog-Nummer D1100-15A-2mg

Size : 2mg

Marke : US Biological

Contact local distributor :

Telefonnummer : +1 850 650 7790


Molecular Biology Grade


Shipping Temp
Blue Ice

Storage Temp

Thorn Apple or Jimson Weed
This 86,000 molecular weight glycoprotein contains two chains of 40,000 and 46,000D joined by disulfide bonds. This lectin is free of a reported 32,000 molecular weight contaminant protein. The carbohydrate binding site recognizes (b-1,4) linked N-acetylglucosamine oligomers, preferring chitobiose or chitotriose over a single N-acetylglucosamine residue. This lectin binds well in the acidic pH range but its affinity decreases above pH 8.0. DSL is mitogenic toward human peripheral lymphocytes and its potency has been reported to increase as the lectin aggregates to larger molecular weight species. Datura lectin also binds well to -acetyllactosamine and oligomers containing repeating N-acetyllactosamine sequences. A branched pentasaccharide including two N-acetyllactosamine disaccharides linked to mannose (b-1,6) and (b-1,2) was reported to be the most potent inhibitor of agglutination. Carcinoembryonic antigen, capsular polysaccharides and many glycoproteins have binding sites for this lectin. This biotinylated lectin conjugate is prepared from affinity-purified lectin and is optimally labeled with biotin. Essentially free of inactive lectin conjugate and containing no free biotin, this biotinylated lectin provides an ideal intermediate for examining glycoconjugates using the Biotin-Avidin System. First the biotin-labeled lectin is added, followed by an ABC Reagent, Avidin D conjugate, or streptavidin derivative. Another possible application is in the isolation of lymphokines and other products of mitogenic stimulation.

Suitable for use in ELISA, Western Blot and Immunohistochemistry. Other applications not tested.

Recommended Dilution:
Optimal dilutions to be determined by the researcher.

Inhibiting/Eluting Sugar:
Chitin Hydrolysate

Storage and Stability:
Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Reconstituted product is stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

Datura stramonium (Thorn Apple or Jimson Weed) seeds

Not determined

Supplied as a powder in 10mM HEPES, pH 7.5, 0.15M sodium chloride, 0.08% sodium azide, 0.1mM Ca++. Reconstitute with 1ml dH2O. Labeled with Biotin.

Important Note
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.