Phaseolus vulgaris agglutinin is the name ascribed to a family of lectins, each of which consists of four subunits. There are two different types of subunits. One appears to be involved primarily in red cell agglutination and has been designated the “E” subunit (for erythroagglutinin). The other type is involved in lymphocyte agglutination and mitogenic activity and has been termed the “L” subunit (for leucoagglutinin). These subunits combine to produce five isolectins. PHA-E possesses strong hemagglutinating activity but is a poor mitogen.
Fluorescein labeled PHA-E has an appropriate number of fluorochromes bound to provide the optimum staining characteristics for this lectin. This conjugate is supplied essentially free of unconjugated fluorochromes. The excitation maximum is at 495 nm and the emission maximum is at 515 nm.
Specifications
Unit Size
2 mg
Applications
Immunofluorescence, Glycobiology
Recommended Usage
The recommended concentration range for use is 5-20 µg/ml.
Recommended Storage
2-8°C
Maximum Excitation
495-500 nm
Maximum Emission
514-521 nm
Solution
10 mM HEPES, 0.15 M NaCl, pH 7.5, 0.08% sodium azide, 0.1 mM CaCl2, 5mg/ml Beta-Cyclodextrin
Concentration
2 mg active conjugate/ml
Conjugate
Fluorescein
Color of Fluorescence
Green
Sugar Specificity
Galactose, Complex Structures
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