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L0881
Lectin from Arachis hypogaea (peanut)
lyophilized powder, Affinity-purified
Synonyme(s) :
PNA, Peanut agglutinin
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5 MG
160,00 $
10 MG
277,00 $
25 MG
598,00 $
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5 MG
160,00 $
10 MG
277,00 $
25 MG
598,00 $
About This Item
Code UNSPSC :
12352202
Nomenclature NACRES :
NA.32
160,00 $
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Devis pour commande en gros
Produits recommandés
Forme
lyophilized powder
Niveau de qualité
Puissance
<0.1 μg per mL agglutination activity
Qualité
Affinity-purified
Impuretés
salt, free
Température de stockage
−20°C
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Description générale
Lectin from Arachis hypogaea (peanut) is a homotetrameric protein of 110 kDa.[1]
Application
Actions biochimiques/physiologiques
Lectin from Arachis hypogaea (peanut) possess specificity towards β -D-Gal(1-3)-D-galNAc residue of Thomson − Friedenreich antigen.[5][1] It is the most widely used diagnostic and prognostic marker for many squamous cell carcinomas.[5]
PNA does not agglutinate normal human erythrocytes, but strongly agglutinates neuraminidase treated erythrocytes. PNA has potent anti-T activity similar to the anti-T antibody in human sera. The lectin can be used to distinguish between human lymphocyte subsets.
Remarque sur l'analyse
Agglutination activity is expressed in μg/ml and is determined from serial dilutions in phosphate buffered saline, pH 6.8, of a 1 mg/ml solution. This activity is the lowest concentration to agglutinate a 2% suspension of neuraminidase treated human blood group O erythrocytes after 1 hr incubation at 25 °C.
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
WGK 3
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Eyeshields, Gloves, type N95 (US)
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What is the Department of Transportation shipping information for this product?
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Is the peanut lectin (Lectin from Arachis hypogaea) a glycoprotein? If so, what is the carbohydrate content?
1 answer-
Peanut lectin is not a glycoprotein. Although peanut lectin binds specifically to a particular carbohydrate (beta-gal(1-->3)galNac) in other molecules, the lectin itself does not contain any carbohydrate. Please see page 231 of the following paper: R. Banerjee, et al., "Crystal structure of peanut lectin, a protein with an unusual quaternary structure". Proc. Nat. Acad. Sci., USA, 91, 227-231 (1994).
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How does the storage temperature relate to shipping conditions?
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The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment.
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