Merck
Todas as fotos(2)

L8754

Sigma-Aldrich

Lectin from Phaseolus vulgaris (red kidney bean)

Phytohemagglutinin PHA-P, lyophilized powder

Sinônimo(s):
PHA, Phaseolus vulgaris agglutinin
Número EC:
NACRES:
NA.32

Nível de qualidade

300

fonte biológica

Phaseolus vulgaris

forma

lyophilized powder

potência

≤62.5 μg per mL agglutination activity
≤10 μg/mL mitogenic activity

Impurezas

salt, free

temperatura de armazenamento

2-8°C

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Descrição geral

PHAs are carbohydrate-binding proteins. There are several types of PHAs identified, predominantly in leguminous plants.
Phytohaemagglutinin (PHA, or phytohemagglutinin) is a lectin found in plants (esp. in legumes). It is obtained from Phaseolus vulgaris (red kidney beans) and acts as a mitogen in human leucocyte culture.

Aplicação

It has also been used as an antigen to measure in vivo T-cell-mediated immune responsiveness.
Lectin from Phaseolus vulgaris (red kidney bean) has been used in phytohemagglutinin (PHA) assay and during assessment of cellular and humoral immunity.

Embalagem

5 mg in glass bottle
25, 50 mg in poly bottle

Ações bioquímicas/fisiológicas

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.

Nota de análise

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.

Código de classe de armazenamento

11 - Combustible Solids

WGK

WGK 3

Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Certificado de análise

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Certificado de origem

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Product Information Sheet

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