SRP3211

IL-4 from mouse

Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

• Synonyme(s) : B cell stimulating factor (BSF-1), BCDF, BCGF
• Code UNSPSC : 12352202
• Nomenclature NACRES : NA.32

Propriétés

• Source biologique: mouse
• Produit recombinant: expressed in E. coli
• Pureté: ≥98% (HPLC); ≥98% (SDS-PAGE)
• Forme: lyophilized
• Puissance: ≤2.0 ng/mL ED₅₀
• Poids mol.: 13.7 kDa
• Conditionnement: pkg of 20 μg
• Technique(s): cell culture | mammalian: suitable
• Impuretés: <0.1 EU/μg endotoxin, tested
• Couleur: white to off-white
• Numéro d'accès UniProt: P07750
• Conditions d'expédition: wet ice
• Température de stockage: −20°C
• Informations sur le gène: mouse ... IL4(16189)

Description

Description générale

IL-4 (interleukin 4) is a pleiotropic cytokine. Produced by mast cells, T cells and bone marrow stromal cells. Recombinant murine IL-4 is a 13.7kDa globular protein containing 120 amino acid residues.

Actions biochimiques/physiologiques

It regulates diverse T and B cell responses including cell proliferation, survival and gene expression. IL-4 regulates the differentiation of naive CD4+ T cells into helper Th2 (T helper) cells, characterized by their cytokine-secretion profile that includes secretion of IL-4, IL-5, IL-6, IL-10, and IL-13, which favor a humoral immune response. Another dominant function of IL-4 is the regulation of immunoglobulin class switching to the IgG1 (immunoglobulin G1) and IgE isotypes. Excessive IL-4 production by Th2 cells has been associated with elevated IgE production and allergy. IL-4 helps in long-term recovery after cerebral ischemia by controlling the activities of microglia/macrophage. In mice, absence of IL-4 is associated with a state anxiety-like behavior.

Séquence

MHIHGCDKNH LREIIGILNE VTGEGTPCTE MDVPNVLTAT KNTTESELVC RASKVLRIFY LKHGKTPCLK KNSSVLMELQ RLFRAFRCLD SSISCTMNES KSTSLKDFLE SLKSIMQMDY S

Forme physique

Lyophilized with no additives.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a stabilizer (example 5% Trehalose) and store in working aliquots at -20°C to -80°C.

Informations sur la sécurité

• 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