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Merck
CN

L9132

Sigma-Aldrich

Lectin from Phaseolus vulgaris (red kidney bean)

Phytohemagglutinin PHA-P, suitable for cell culture, lyophilized powder

Synonym(s):

Phaseolus vulgaris agglutinin, PHA

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About This Item

EC Number:
UNSPSC Code:
12352202
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form

lyophilized powder

potency

≤16 μg per mL agglutination activity (with erythrocytes)
≤10 μg per mL mitogenic activity

technique(s)

cell culture | mammalian: suitable

impurities

salt, free

solubility

PBS: 5 mg/mL

storage temp.

2-8°C

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Biochem/physiol Actions

PHA consists of two molecular species, an erythroagglutinin (PHA-E) which has low mitogenic activity and high erythroagglutinin activity, and leucoagglutinin (PHA-L) which has high mitogenic and leucoagglutinating activity, but very low erythroagglutinating activity.
PHA-E is not blood group specific, but agglutination can be inhibited by certain oligosaccharides. PHA-P is the protein form of PHA prior to separation and purification of erythroagglutinin and leucoagglutinin. PHA-M is the mucoprotein form. Conjugates are prepared from the corresponding purified lectins.

Analysis Note

Agglutination activity is expressed in mg/ml and is determined from serial dilutions of a 1 mg/ml solution. This activity is the lowest concentration to agglutinate a suspension of 2% human erythrocytes in phosphate buffered saline, pH 6.8 after 1 hr incubation at 25°C. Mitogenic activity is determined by BrdU incorporation in HeLa cell cultures.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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