Bauhinia purpurea Lectin (BPL/BPA) - Cy5

Bauhinia purpurea agglutinin or lectin (BPA/BPL) is a tetrameric lectin with a molecular weight of 120 kDa. Binding appears to be highest for glycoconjugates containing galactosyl (β-1,3) N-acetylgalactosamine structures but oligosaccharides with a terminal α-linked N-acetylgalactosamine can also bind. BPA is lactose-specific and elutes with sugar lactose. It has specificity for blood groups A, B, O (-SA). Treatment of erythrocytes with neuraminidase or trypsin will increase the agglutination reaction, indicating that the receptor is masked by terminal carbohydrates. Although binding specificity is similar to that of peanut agglutinin, tissue staining patterns of these two lectins are distinct.

Cy5, when bound to Bauhinia purpurea lectin (BPL/BPA), can show the binding pattern of this lectin in cellular imaging and flow cytometry. The excitation wavelength required for Cy5 to fluoresce is high enough to avoid overlapping with most other fluorochromes, making it useful for dual-labeling experiments. This high excitation typically results in less background from autofluorescence of biological specimens.

Recommended Usage: Recommended dilutions is 0.5 – 10 µg / ml in 1XPBS. Less than 1 µg / ml will agglutinate human erythrocytes.

Storage Instruction: To prevent degradation and avoid repeated freeze-thaw cycles, aliquot your product into small, single-use volumes and store them at -20°C

Application

Immunofluorescence, Immunohistochemistry, Immunocytochemistry, Cell typing. Diagnostic tool, Glycobiology.

References

1. N. Martin Young, David C. Watson and Ross E. Williams. Lectins and legume chemotaxonomy. Characterization of the N-acetyl-D-galactosamine specific lectin of Bauhinia purpurea. 1985 March, Vol 182, Issue 2, 25, 403-406.
2. Yamamoto K, Konami Y, Osawa T. Determination of the carbohydrate-binding site of Bauhinia purpurea lectin by affinity chromatography. J Chromatogr. 1992 Apr 24;597(1-2):221-30.
3. Nascimento KS, Morada RCV, Oliveira MV, Martins FWV, Sacramento-Neto JC, Cavada BS. Purification and partial characterization of a new melibiose-specific lectin from Bauhinia catingae Harms. 2024 Dec, Int J Biol Macromol.;282 (Pt 1):136564.
4. Wu AM, Wu JH, Liu JH, Singh T. Recognition profile of Bauhinia purpurea agglutinin (BPA). 2004 Feb. Life Sci. 20;74(14):1763-79.