Concanavalin A Lectin (Con A) - AP (Alkaline Phosphatase)

Product Description

Concanavalin A Lectin (Con A) is isolated from jack beans (Canavalia ensiformis) and purified by affinity chromatography. Con A is composed of identical subunits of 237 amino acid residues (MW: 26,000 without any cystine residues) and while above pH 7 it is predominantly tetrameric, at pH 4.5 - 5.6, Con A exists as a single dimer MW: 53,000. Con A binds with non-reducing α-D-glucose, α-D-mannose and α-methyl-D-glucopyranoside acts as a competitive inhibitor. It has a carbohydrate specificity towards α-mannose and α-glucose and elutes with MeαMan + MeαGlc. Con A does not have a blood group specificity. It exhibits mitogenic activity with lymphocytes and cancer cells which aggregate by Con A (normal white cells do not). Normal cells react to Con A after proteolytic treatment which suggests that trypsinization causes clustering of the reactive glycan residues on the membrane.

Alkaline phosphatase (AP) is conjugated to Concanavalin A (Jackbean) lectin (Con A) for applications such as Western blotting and ELISA. Alkaline phosphatase is a large protein (140 kDa) that catalyzes the hydrolysis of phosphate groups from a substrate, resulting in a colored or fluorescent product. Its optimal enzymatic activity is between pH 8 and 10, and its reaction rate remains linear, enhancing sensitivity over time.

Recommended Usage: Recommended dilutions of 0.5-10 µg in 0.5 M Sodium Phosphate Buffer pH 7.4. More than 10ug/ml may be required to give visible agglutination of neuraminidase treated human erythrocytes.