Dolichos biflorus Agglutinin (DBA, Horse gram)

Dolichos biflorus agglutinin is a glycoprotein with a molecular weight of about 120,000 and consists of 4 subunits of approximately equal size. This lectin has an isoelectric point of about pH 5.5 and a carbohydrate specificity toward a-linked N-acetylgalactosamine. DBA is approximately 5000 times more active in agglutinating blood group A1 cells versus A2 cells, and is used to distinguish these blood types in routine serology. It has also been used to establish secretor status in A1 individuals by hemagglutination inhibition techniques and has potential applications in examining tumors which affect the levels of blood group substances.

Applications:
Suitable for use in ELISA. Western Blot, Immunofluorescence, Immunohistochemistry, Immunocytochemistry and Glycobiology. Other applications not tested.

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

Sugar Specificity:
N-Acetylgalactosamine

Storage and Stability:
Lyophilized and reconstituted products are stable for 6 months after receipt at -20°C. Reconstitute with sterile 10mM HEPES buffered saline, pH 8.5, 0.1mM CaCl2. Aliquot to avoid repeated freezing and thawing. Store 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.