ICOS Protein (His Tag)

• Description:

  Inducible costimulator (ICOS), also called AILIM (Activation-Inducible Lymphocyte Immunomediatory Molecule) is a cell-surface receptor and belongs to the CD28 family of immune costimulatory receptors consisting of CD28, CTLA-4, and PD-1. The interaction of B7-H2/ICOS plays a critical role in Th cell differentiation, T−B cell interactions which are essential for the germinal center formation, and humoral immune responses, and as well as the production of cytokine IL-4. Also, ICOS is more potent in the induction of IL-10 production, a cytokine important for the suppressive function of T regulatory cells. The B7-1/B7-2--CD28/CTLA-4 and ICOS-B7RP-1 pathway provide key second signals that can regulate the activation, inhibition, and fine-tuning of T-lymphocyte responses. ICOS stimulates both Th1 and Th2 cytokine production but may have a preferential role in Th2 cell development. Moreover, The B7-1/B7-2-CD28/CTLA-4 and ICOS-B7RP-1 pathway has been suggested as being involved in the development of airway inflammation and airway hyperresponsiveness.

• Synonyms:

  AILIM Protein; CD278 Protein; CVID1 Protein

• Accession Number:

  NP_036224.1

• Reactivity:

  Human

• Cross Reactivity:

  Human

• Label:

  His-Tag

• Assay Protocol:

  See Datasheet send with the product

• Endotoxin:

  < 1.0 EU per μg of the protein as determined by the LAL method

• Purity:

  ≥ 95 % as determined by SDS-PAGE. ≥ 90 % as determined by SEC-HPLC.

• Bioactivity:

  Data not available

• Length:

  125

• Form:

  Lyophilized or frozen liquid

• Buffer:

  PBS, pH 7.4

• Reconstitution:

  See Datasheet

• Molecular Weight:

  28 kDa

• Storage Conditions:

  Samples are stable for up to twelve months from date of receipt at -20°C to -80°C. Store it under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

• Host or Source:

  HEK 293 cells