Recombinant Mouse ICOS/AILIM Protein (His Tag)
SKU: PKSM041217-50
Recombinant Mouse ICOS/AILIM Protein (His Tag)
| SKU # | PKSM041217 |
| Expression Host | HEK293 Cells |
Description
| Synonyms | AILIM, Activation-inducible lymphocyte immunomediatory molecule, Ailim, CCLP, CD278, CD28 and CTLA-4-like protein, CD28-related protein 1, CRP-1, H4, Icos, Inducible T-cell costimulator, Ly115 |
| Species | Mouse |
| Expression Host | HEK293 Cells |
| Sequence | Glu21-Leu142 |
| Accession | Q9WVS0 |
| Calculated Molecular Weight | 14.7 kDa |
| Observed Molecular Weight | 16-30 kDa |
| Tag | C-His |
| Bio-activity | Not validated for activity |
Properties
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 EU per μg of the protein as determined by the LAL method. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.4. Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | Please refer to the printed manual for detailed information. |
Background
Inducible Costimulator(ICOS) is a member of the growing CD28 family of immune costimulatory receptors. Other family members are CD28, CTLA4 and PD1. ICOS shares approximately 39% amino acid similarity with CD 28 and CTLA4. Mouse and human ICOS share approximately 72% amino acid identity. ICOS is expressed on most CD45RO+ cells. ICOS expression is up-regulated within approximately 24-48 hours of activation on Th primed cells. B7-H2, a member of the B7 family of costimulatory ligands, has been identified as the ICOS ligand. The B7-H2/ ICOS interaction appears to play roles in T cell dependent B cell activation and Th differentiation. In addition, ICOS is more potent in the induction of IL-10 production, acytokine important for suppressive function of T regulatory cells.