C2010

Concanavalin A from Canavalia ensiformis (Jack bean)

Type IV, lyophilized powder

• Synonyme(s) : Con A
• Numéro CAS: 11028-71-0
• Numéro CE : 234-258-2
• Numéro MDL: MFCD00071069
• Code UNSPSC : 23151817
• Nomenclature NACRES : NA.32

Propriétés

• Type: Type IV
• Niveau de qualité: 300
• Forme: lyophilized powder
• Puissance: <64 μg per mL agglutination activity
• Impuretés: Carbohydrate, essentially free; salt, essentially free
• Température de stockage: −20°C

Description

Description générale

Concanavalin A (con A) is a plant lectin refined from jack beans.[1] It is a tetrameric protein, which has four identical 28 kDa subunits.[2] Con A has the ability to connect with the mannose residues of several glycoproteins and can stimulate lymphocytes.[1]

Application

Concanavalin A from Canavalia ensiformis (Jack bean) has been used:

• as T-lymphocyte mitogen in lymphocyte proliferation assay for correlations with organochlorine contaminants (OCs)[3]
• for in vitro stimulation of T cell hybridomas, BW5147 cells and primary CD4⁺ T cells for T cell vaccination and for induction of hepatitis[4]
• for the stimulation of mice splenocytes in the suppression of T-lymphocytes proliferation assay[5]
• for the stimulation of spleen in mitogen assays[6]

Actions biochimiques/physiologiques

Con A is not blood group specific but has an affinity for terminal α-D-mannosyl and α-D-glucosyl residues. Ca²⁺ and Mn²⁺ ions are required for activity. Con A dissociates into dimers at pH 5.6 or below. Between pH 5.8 and pH 7.0, Con A exists as a tetramer; above pH 7.0 higher aggregates are formed. Con A exhibits mitogenic activity which is dependent on its degree of aggregation. Succinylation results in an active dimeric form which remains a dimer above pH 5.6.

Qualité

Highly purified by specific affinity chromatography

Remarque sur l'analyse

Where reported, agglutination activity is expressed in μg/ml and is determined from serial dilutions in phosphate buffered saline, pH 6.8, containing Ca²⁺ and Mn²⁺ of a 1 mg per mL solution. This activity is the lowest concentration to agglutinate a 2% suspension of human erythrocytes after 1 hr incubation at 25 °C.

Informations sur la sécurité

• Pictogrammes: GHS08
• Mention d'avertissement: Danger
• Mentions de danger: H317,H334,H361
• Conseils de prudence: P202 - P261 - P272 - P280 - P302 + P352 - P308 + P313
• Classification des risques: Repr. 2 - Resp. Sens. 1 - Skin Sens. 1
• Code de la classe de stockage: 13 - Non 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: dust mask type N95 (US), Eyeshields, Faceshields, Gloves