Skip to Content
Merck
All Photos(1)

Key Documents

L9017

Sigma-Aldrich

Lectin from Phaseolus vulgaris (red kidney bean)

Phytohemagglutinin PHA-P, BioXtra, purified by affinity chromatography, lyophilized powder

Synonym(s):

Phaseolus vulgaris agglutinin, PHA

Sign Into View Organizational & Contract Pricing

Select a Size

1 MG
NOK 1,400.00
5 MG
NOK 2,300.00
10 MG
NOK 4,180.00

NOK 1,400.00


Please contact Customer Service for Availability


Select a Size

Change View
1 MG
NOK 1,400.00
5 MG
NOK 2,300.00
10 MG
NOK 4,180.00

About This Item

EC Number:
UNSPSC Code:
12352202
NACRES:
NA.32

NOK 1,400.00


Please contact Customer Service for Availability

biological source

Phaseolus vulgaris

Quality Level

product line

BioXtra

form

lyophilized powder

potency

≤17 μg per mL agglutination activity

purified by

affinity chromatography

impurities

salt, essentially free

storage temp.

2-8°C

Looking for similar products? Visit Product Comparison Guide

General description

Lectins are carbohydrate-binding proteins,[1] that contains four subunits with a molecular weight of 125 kDa.[2] Leucoagglutinin PHA-L is a plant lectin, which is transported by the neurons in the central nervous system.[3]

Application

Lectin from Phaseolus vulgaris (red kidney bean) has been used:
  • for phytohemagglutinin (PHA) swelling assay[4]
  • for lymphocyte activation assay[5]
  • to evaluate cell-mediated immune response[6]

Biochem/physiol Actions

Lectin agglutinates cells and precipitates polysaccharides and glycoproteins.[1] It has anti-cancer, anti-human immunodeficiency virus (anti-HIV) and anti-microbial infection properties. Lectin is associated with toxic allergens and hemagglutinins. Lectin inhibits mucosal atrophy, lowers type 2 diabetes and obesity, enhances nutrient absorption and regulates drug targeting.[7]
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.

Quality

Mitogenic activity at ≤10 μg per mL.

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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Chickadees faced with unpredictable food increase fat reserves but certain components of their immune function decline
Cornelius EA, et al.
Physiological and Biochemical Zoology : Pbz, 90(2), 190-200 (2017)
Phaseolus vulgaris leucoagglutinin (PHA-L): A neuroanatomical tracer for electron microscopic analysis of synaptic circuitry in the cat's dorsal lateral geniculate nucleus
Cucchiaro JB and UhlrichDJ
Journal of Electron Microscopy Technique, 15(4), 352-368 (1990)
Aniuska Becerra-Artiles et al.
Cell reports, 39(11), 110952-110952 (2022-06-09)
Sequence homology between SARS-CoV-2 and common-cold human coronaviruses (HCoVs) raises the possibility that memory responses to prior HCoV infection can affect T cell response in COVID-19. We studied T cell responses to SARS-CoV-2 and HCoVs in convalescent COVID-19 donors and identified a
The Lectins: Properties, Functions, and Applications in Biology and Medicine (2012)
Charlotte D C C van der Heijden et al.
The Journal of clinical endocrinology and metabolism, 105(5) (2019-12-26)
Primary aldosteronism (PA) confers an increased risk of cardiovascular disease (CVD), independent of blood pressure. Animal models have shown that aldosterone accelerates atherosclerosis through proinflammatory changes in innate immune cells; human data are scarce. The objective of this article is

Articles

Find the right lectin for your research with our lectin selection guide, organized by lectin source/species, carbohydrate specificity, blood group specificity, and more.

Questions

  1. What do the designations -P, -L, -M, and -E represent in the names of PHA products?

    1 answer
    1. Generally, PHA-P or PHA-L is utilized to stimulate lymphocytes, although PHA-M will also work, but not to the same degree. The most active form is PHA-L (the mitogenic concentration is < 5μg/ml). PHA, or Phytohemagglutinin, comprises two molecular species:

      1. Erythroagglutinin (PHA-E), which demonstrates low mitogenic activity and high erythroagglutinating activity.

      2. Leucoagglutinin (PHA-L), which possesses high mitogenic and leucoagglutinating activity, accompanied by very low erythroagglutinating activity.

      PHA-P represents the protein form of PHA before the erythroagglutinin and leucoagglutinin components are separated and purified. PHA-M refers to the mucoprotein form of Phytohemagglutinin.

      Helpful?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service