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Merck

L8902

Lectin from Phaseolus vulgaris (red kidney bean)

Phytohemagglutinin PHA-M, lyophilized powder, BioReagent, suitable for cell culture

Synonym(s):

Phaseolus vulgaris agglutinin, PHA

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About This Item

UNSPSC Code:
12352202
EC Number:
232-718-7
NACRES:
NA.32
Form:
lyophilized powder
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Quality Level

product line

BioReagent

form

lyophilized powder

potency

<40 μg per mL agglutination activity

technique(s)

cell culture | mammalian: suitable

impurities

salt, free

solubility

PBS: 2 mg/mL

storage temp.

2-8°C

Application

Lectin from Phaseolus vulgaris (red kidney bean) is used in Lymphocyte Transformation Assay and culture medium.

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 μg/mL and is determined from serial dilutions of a 1 mg/mL solution. This activity is the lowest concentration to agglutinate a 2% suspension of human erythrocytes in phosphate buffered saline, pH 6.8, after 1 hr incubation at 25 °C.


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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable



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